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Diffstat (limited to 'packages/webapi/mod.js')
| -rw-r--r-- | packages/webapi/mod.js | 9465 |
1 files changed, 9465 insertions, 0 deletions
diff --git a/packages/webapi/mod.js b/packages/webapi/mod.js new file mode 100644 index 000000000..785fb7663 --- /dev/null +++ b/packages/webapi/mod.js @@ -0,0 +1,9465 @@ +import { setTimeout as setTimeout$1, clearTimeout as clearTimeout$1 } from 'node:timers'; +import http from 'node:http'; +import https from 'node:https'; +import zlib from 'node:zlib'; +import Stream, { PassThrough, pipeline as pipeline$1 } from 'node:stream'; +import { promisify, deprecate, types } from 'node:util'; +import { format as format$1 } from 'node:url'; +import { isIP } from 'node:net'; +import { performance } from 'node:perf_hooks'; + +/** Returns the function bound to the given object. */ +const __function_bind = Function.bind.bind(Function.call); +/** Returns the function called with the specified values. */ +Function.call.bind(Function.call); +/** Returns whether an object has a property with the specified name. */ +const __object_hasOwnProperty = Function.call.bind(Object.prototype.hasOwnProperty); +/** Returns a string representation of an object. */ +Function.call.bind(Object.prototype.toString); +/** Returns whether the object prototype exists in another object. */ +const __object_isPrototypeOf = Function.call.bind(Object.prototype.isPrototypeOf); +/** Current high resolution millisecond timestamp. */ +const __performance_now = performance.now; +/** Returns the string escaped for use inside regular expressions. */ +const __string_escapeRegExp = (value) => value.replace(/[\\^$*+?.()|[\]{}]/g, '\\$&'); +// @ts-ignore +const INTERNALS$3 = new WeakMap(); +const internalsOf = (target, className, propName) => { + const internals = INTERNALS$3.get(target); + if (!internals) + throw new TypeError(`${className}.${propName} can only be used on instances of ${className}`); + return internals; +}; +const allowStringTag = (value) => value.prototype[Symbol.toStringTag] = value.name; +/** Returns any kind of path as a posix path. */ +const pathToPosix = (pathname) => String(pathname == null ? '' : pathname).replace( +// convert slashes +/\\+/g, '/').replace( +// prefix a slash to drive letters +/^(?=[A-Za-z]:\/)/, '/').replace( +// encode path characters +/%/g, '%25').replace(/\n/g, '%0A').replace(/\r/g, '%0D').replace(/\t/g, '%09'); + +class DOMException extends Error { + constructor(message = '', name = 'Error') { + super(message); + this.code = 0; + this.name = name; + } +} +DOMException.INDEX_SIZE_ERR = 1; +DOMException.DOMSTRING_SIZE_ERR = 2; +DOMException.HIERARCHY_REQUEST_ERR = 3; +DOMException.WRONG_DOCUMENT_ERR = 4; +DOMException.INVALID_CHARACTER_ERR = 5; +DOMException.NO_DATA_ALLOWED_ERR = 6; +DOMException.NO_MODIFICATION_ALLOWED_ERR = 7; +DOMException.NOT_FOUND_ERR = 8; +DOMException.NOT_SUPPORTED_ERR = 9; +DOMException.INUSE_ATTRIBUTE_ERR = 10; +DOMException.INVALID_STATE_ERR = 11; +DOMException.SYNTAX_ERR = 12; +DOMException.INVALID_MODIFICATION_ERR = 13; +DOMException.NAMESPACE_ERR = 14; +DOMException.INVALID_ACCESS_ERR = 15; +DOMException.VALIDATION_ERR = 16; +DOMException.TYPE_MISMATCH_ERR = 17; +DOMException.SECURITY_ERR = 18; +DOMException.NETWORK_ERR = 19; +DOMException.ABORT_ERR = 20; +DOMException.URL_MISMATCH_ERR = 21; +DOMException.QUOTA_EXCEEDED_ERR = 22; +DOMException.TIMEOUT_ERR = 23; +DOMException.INVALID_NODE_TYPE_ERR = 24; +DOMException.DATA_CLONE_ERR = 25; +allowStringTag(DOMException); + +/** + * Assert a condition. + * @param condition The condition that it should satisfy. + * @param message The error message. + * @param args The arguments for replacing placeholders in the message. + */ +function assertType(condition, message, ...args) { + if (!condition) { + throw new TypeError(format(message, args)); + } +} +/** + * Convert a text and arguments to one string. + * @param message The formating text + * @param args The arguments. + */ +function format(message, args) { + let i = 0; + return message.replace(/%[os]/gu, () => anyToString(args[i++])); +} +/** + * Convert a value to a string representation. + * @param x The value to get the string representation. + */ +function anyToString(x) { + if (typeof x !== "object" || x === null) { + return String(x); + } + return Object.prototype.toString.call(x); +} + +let currentErrorHandler; +/** + * Print a error message. + * @param maybeError The error object. + */ +function reportError(maybeError) { + try { + const error = maybeError instanceof Error + ? maybeError + : new Error(anyToString(maybeError)); + // Call the user-defined error handler if exists. + if (currentErrorHandler) ; + // Dispatch an `error` event if this is on a browser. + if (typeof dispatchEvent === "function" && + typeof ErrorEvent === "function") { + dispatchEvent(new ErrorEvent("error", { error, message: error.message })); + } + // Emit an `uncaughtException` event if this is on Node.js. + //istanbul ignore else + else if (typeof process !== "undefined" && + typeof process.emit === "function") { + process.emit("uncaughtException", error); + return; + } + // Otherwise, print the error. + console.error(error); + } + catch (_a) { + // ignore. + } +} + +let currentWarnHandler; +/** + * The warning information. + */ +class Warning { + constructor(code, message) { + this.code = code; + this.message = message; + } + /** + * Report this warning. + * @param args The arguments of the warning. + */ + warn(...args) { + var _a; + try { + // Call the user-defined warning handler if exists. + if (currentWarnHandler) ; + // Otherwise, print the warning. + const stack = ((_a = new Error().stack) !== null && _a !== void 0 ? _a : "").replace(/^(?:.+?\n){2}/gu, "\n"); + console.warn(this.message, ...args, stack); + } + catch (_b) { + // Ignore. + } + } +} + +const InitEventWasCalledWhileDispatching = new Warning("W01", "Unable to initialize event under dispatching."); +const FalsyWasAssignedToCancelBubble = new Warning("W02", "Assigning any falsy value to 'cancelBubble' property has no effect."); +const TruthyWasAssignedToReturnValue = new Warning("W03", "Assigning any truthy value to 'returnValue' property has no effect."); +const NonCancelableEventWasCanceled = new Warning("W04", "Unable to preventDefault on non-cancelable events."); +const CanceledInPassiveListener = new Warning("W05", "Unable to preventDefault inside passive event listener invocation."); +const EventListenerWasDuplicated = new Warning("W06", "An event listener wasn't added because it has been added already: %o, %o"); +const OptionWasIgnored = new Warning("W07", "The %o option value was abandoned because the event listener wasn't added as duplicated."); +const InvalidEventListener = new Warning("W08", "The 'callback' argument must be a function or an object that has 'handleEvent' method: %o"); +const InvalidAttributeHandler = new Warning("W09", "Event attribute handler must be a function: %o"); + +/*eslint-disable class-methods-use-this */ +/** + * An implementation of `Event` interface, that wraps a given event object. + * `EventTarget` shim can control the internal state of this `Event` objects. + * @see https://dom.spec.whatwg.org/#event + */ +class Event { + /** + * @see https://dom.spec.whatwg.org/#dom-event-none + */ + static get NONE() { + return NONE; + } + /** + * @see https://dom.spec.whatwg.org/#dom-event-capturing_phase + */ + static get CAPTURING_PHASE() { + return CAPTURING_PHASE; + } + /** + * @see https://dom.spec.whatwg.org/#dom-event-at_target + */ + static get AT_TARGET() { + return AT_TARGET; + } + /** + * @see https://dom.spec.whatwg.org/#dom-event-bubbling_phase + */ + static get BUBBLING_PHASE() { + return BUBBLING_PHASE; + } + /** + * Initialize this event instance. + * @param type The type of this event. + * @param eventInitDict Options to initialize. + * @see https://dom.spec.whatwg.org/#dom-event-event + */ + constructor(type, eventInitDict) { + Object.defineProperty(this, "isTrusted", { + value: false, + enumerable: true, + }); + const opts = eventInitDict !== null && eventInitDict !== void 0 ? eventInitDict : {}; + internalDataMap.set(this, { + type: String(type), + bubbles: Boolean(opts.bubbles), + cancelable: Boolean(opts.cancelable), + composed: Boolean(opts.composed), + target: null, + currentTarget: null, + stopPropagationFlag: false, + stopImmediatePropagationFlag: false, + canceledFlag: false, + inPassiveListenerFlag: false, + dispatchFlag: false, + timeStamp: Date.now(), + }); + } + /** + * The type of this event. + * @see https://dom.spec.whatwg.org/#dom-event-type + */ + get type() { + return $(this).type; + } + /** + * The event target of the current dispatching. + * @see https://dom.spec.whatwg.org/#dom-event-target + */ + get target() { + return $(this).target; + } + /** + * The event target of the current dispatching. + * @deprecated Use the `target` property instead. + * @see https://dom.spec.whatwg.org/#dom-event-srcelement + */ + get srcElement() { + return $(this).target; + } + /** + * The event target of the current dispatching. + * @see https://dom.spec.whatwg.org/#dom-event-currenttarget + */ + get currentTarget() { + return $(this).currentTarget; + } + /** + * The event target of the current dispatching. + * This doesn't support node tree. + * @see https://dom.spec.whatwg.org/#dom-event-composedpath + */ + composedPath() { + const currentTarget = $(this).currentTarget; + if (currentTarget) { + return [currentTarget]; + } + return []; + } + /** + * @see https://dom.spec.whatwg.org/#dom-event-none + */ + get NONE() { + return NONE; + } + /** + * @see https://dom.spec.whatwg.org/#dom-event-capturing_phase + */ + get CAPTURING_PHASE() { + return CAPTURING_PHASE; + } + /** + * @see https://dom.spec.whatwg.org/#dom-event-at_target + */ + get AT_TARGET() { + return AT_TARGET; + } + /** + * @see https://dom.spec.whatwg.org/#dom-event-bubbling_phase + */ + get BUBBLING_PHASE() { + return BUBBLING_PHASE; + } + /** + * The current event phase. + * @see https://dom.spec.whatwg.org/#dom-event-eventphase + */ + get eventPhase() { + return $(this).dispatchFlag ? 2 : 0; + } + /** + * Stop event bubbling. + * Because this shim doesn't support node tree, this merely changes the `cancelBubble` property value. + * @see https://dom.spec.whatwg.org/#dom-event-stoppropagation + */ + stopPropagation() { + $(this).stopPropagationFlag = true; + } + /** + * `true` if event bubbling was stopped. + * @deprecated + * @see https://dom.spec.whatwg.org/#dom-event-cancelbubble + */ + get cancelBubble() { + return $(this).stopPropagationFlag; + } + /** + * Stop event bubbling if `true` is set. + * @deprecated Use the `stopPropagation()` method instead. + * @see https://dom.spec.whatwg.org/#dom-event-cancelbubble + */ + set cancelBubble(value) { + if (value) { + $(this).stopPropagationFlag = true; + } + else { + FalsyWasAssignedToCancelBubble.warn(); + } + } + /** + * Stop event bubbling and subsequent event listener callings. + * @see https://dom.spec.whatwg.org/#dom-event-stopimmediatepropagation + */ + stopImmediatePropagation() { + const data = $(this); + data.stopPropagationFlag = data.stopImmediatePropagationFlag = true; + } + /** + * `true` if this event will bubble. + * @see https://dom.spec.whatwg.org/#dom-event-bubbles + */ + get bubbles() { + return $(this).bubbles; + } + /** + * `true` if this event can be canceled by the `preventDefault()` method. + * @see https://dom.spec.whatwg.org/#dom-event-cancelable + */ + get cancelable() { + return $(this).cancelable; + } + /** + * `true` if the default behavior will act. + * @deprecated Use the `defaultPrevented` proeprty instead. + * @see https://dom.spec.whatwg.org/#dom-event-returnvalue + */ + get returnValue() { + return !$(this).canceledFlag; + } + /** + * Cancel the default behavior if `false` is set. + * @deprecated Use the `preventDefault()` method instead. + * @see https://dom.spec.whatwg.org/#dom-event-returnvalue + */ + set returnValue(value) { + if (!value) { + setCancelFlag($(this)); + } + else { + TruthyWasAssignedToReturnValue.warn(); + } + } + /** + * Cancel the default behavior. + * @see https://dom.spec.whatwg.org/#dom-event-preventdefault + */ + preventDefault() { + setCancelFlag($(this)); + } + /** + * `true` if the default behavior was canceled. + * @see https://dom.spec.whatwg.org/#dom-event-defaultprevented + */ + get defaultPrevented() { + return $(this).canceledFlag; + } + /** + * @see https://dom.spec.whatwg.org/#dom-event-composed + */ + get composed() { + return $(this).composed; + } + /** + * @see https://dom.spec.whatwg.org/#dom-event-istrusted + */ + //istanbul ignore next + get isTrusted() { + return false; + } + /** + * @see https://dom.spec.whatwg.org/#dom-event-timestamp + */ + get timeStamp() { + return $(this).timeStamp; + } + /** + * @deprecated Don't use this method. The constructor did initialization. + */ + initEvent(type, bubbles = false, cancelable = false) { + const data = $(this); + if (data.dispatchFlag) { + InitEventWasCalledWhileDispatching.warn(); + return; + } + internalDataMap.set(this, { + ...data, + type: String(type), + bubbles: Boolean(bubbles), + cancelable: Boolean(cancelable), + target: null, + currentTarget: null, + stopPropagationFlag: false, + stopImmediatePropagationFlag: false, + canceledFlag: false, + }); + } +} +//------------------------------------------------------------------------------ +// Helpers +//------------------------------------------------------------------------------ +const NONE = 0; +const CAPTURING_PHASE = 1; +const AT_TARGET = 2; +const BUBBLING_PHASE = 3; +/** + * Private data for event wrappers. + */ +const internalDataMap = new WeakMap(); +/** + * Get private data. + * @param event The event object to get private data. + * @param name The variable name to report. + * @returns The private data of the event. + */ +function $(event, name = "this") { + const retv = internalDataMap.get(event); + assertType(retv != null, "'%s' must be an object that Event constructor created, but got another one: %o", name, event); + return retv; +} +/** + * https://dom.spec.whatwg.org/#set-the-canceled-flag + * @param data private data. + */ +function setCancelFlag(data) { + if (data.inPassiveListenerFlag) { + CanceledInPassiveListener.warn(); + return; + } + if (!data.cancelable) { + NonCancelableEventWasCanceled.warn(); + return; + } + data.canceledFlag = true; +} +// Set enumerable +Object.defineProperty(Event, "NONE", { enumerable: true }); +Object.defineProperty(Event, "CAPTURING_PHASE", { enumerable: true }); +Object.defineProperty(Event, "AT_TARGET", { enumerable: true }); +Object.defineProperty(Event, "BUBBLING_PHASE", { enumerable: true }); +const keys$1 = Object.getOwnPropertyNames(Event.prototype); +for (let i = 0; i < keys$1.length; ++i) { + if (keys$1[i] === "constructor") { + continue; + } + Object.defineProperty(Event.prototype, keys$1[i], { enumerable: true }); +} + +/** + * An implementation of `Event` interface, that wraps a given event object. + * This class controls the internal state of `Event`. + * @see https://dom.spec.whatwg.org/#interface-event + */ +class EventWrapper extends Event { + /** + * Wrap a given event object to control states. + * @param event The event-like object to wrap. + */ + static wrap(event) { + return new (getWrapperClassOf(event))(event); + } + constructor(event) { + super(event.type, { + bubbles: event.bubbles, + cancelable: event.cancelable, + composed: event.composed, + }); + if (event.cancelBubble) { + super.stopPropagation(); + } + if (event.defaultPrevented) { + super.preventDefault(); + } + internalDataMap$1.set(this, { original: event }); + // Define accessors + const keys = Object.keys(event); + for (let i = 0; i < keys.length; ++i) { + const key = keys[i]; + if (!(key in this)) { + Object.defineProperty(this, key, defineRedirectDescriptor(event, key)); + } + } + } + stopPropagation() { + super.stopPropagation(); + const { original } = $$1(this); + if ("stopPropagation" in original) { + original.stopPropagation(); + } + } + get cancelBubble() { + return super.cancelBubble; + } + set cancelBubble(value) { + super.cancelBubble = value; + const { original } = $$1(this); + if ("cancelBubble" in original) { + original.cancelBubble = value; + } + } + stopImmediatePropagation() { + super.stopImmediatePropagation(); + const { original } = $$1(this); + if ("stopImmediatePropagation" in original) { + original.stopImmediatePropagation(); + } + } + get returnValue() { + return super.returnValue; + } + set returnValue(value) { + super.returnValue = value; + const { original } = $$1(this); + if ("returnValue" in original) { + original.returnValue = value; + } + } + preventDefault() { + super.preventDefault(); + const { original } = $$1(this); + if ("preventDefault" in original) { + original.preventDefault(); + } + } + get timeStamp() { + const { original } = $$1(this); + if ("timeStamp" in original) { + return original.timeStamp; + } + return super.timeStamp; + } +} +/** + * Private data for event wrappers. + */ +const internalDataMap$1 = new WeakMap(); +/** + * Get private data. + * @param event The event object to get private data. + * @returns The private data of the event. + */ +function $$1(event) { + const retv = internalDataMap$1.get(event); + assertType(retv != null, "'this' is expected an Event object, but got", event); + return retv; +} +/** + * Cache for wrapper classes. + * @type {WeakMap<Object, Function>} + * @private + */ +const wrapperClassCache = new WeakMap(); +// Make association for wrappers. +wrapperClassCache.set(Object.prototype, EventWrapper); +/** + * Get the wrapper class of a given prototype. + * @param originalEvent The event object to wrap. + */ +function getWrapperClassOf(originalEvent) { + const prototype = Object.getPrototypeOf(originalEvent); + if (prototype == null) { + return EventWrapper; + } + let wrapper = wrapperClassCache.get(prototype); + if (wrapper == null) { + wrapper = defineWrapper(getWrapperClassOf(prototype), prototype); + wrapperClassCache.set(prototype, wrapper); + } + return wrapper; +} +/** + * Define new wrapper class. + * @param BaseEventWrapper The base wrapper class. + * @param originalPrototype The prototype of the original event. + */ +function defineWrapper(BaseEventWrapper, originalPrototype) { + class CustomEventWrapper extends BaseEventWrapper { + } + const keys = Object.keys(originalPrototype); + for (let i = 0; i < keys.length; ++i) { + Object.defineProperty(CustomEventWrapper.prototype, keys[i], defineRedirectDescriptor(originalPrototype, keys[i])); + } + return CustomEventWrapper; +} +/** + * Get the property descriptor to redirect a given property. + */ +function defineRedirectDescriptor(obj, key) { + const d = Object.getOwnPropertyDescriptor(obj, key); + return { + get() { + const original = $$1(this).original; + const value = original[key]; + if (typeof value === "function") { + return value.bind(original); + } + return value; + }, + set(value) { + const original = $$1(this).original; + original[key] = value; + }, + configurable: d.configurable, + enumerable: d.enumerable, + }; +} + +/** + * Create a new listener. + * @param callback The callback function. + * @param capture The capture flag. + * @param passive The passive flag. + * @param once The once flag. + * @param signal The abort signal. + * @param signalListener The abort event listener for the abort signal. + */ +function createListener(callback, capture, passive, once, signal, signalListener) { + return { + callback, + flags: (capture ? 1 /* Capture */ : 0) | + (passive ? 2 /* Passive */ : 0) | + (once ? 4 /* Once */ : 0), + signal, + signalListener, + }; +} +/** + * Set the `removed` flag to the given listener. + * @param listener The listener to check. + */ +function setRemoved(listener) { + listener.flags |= 8 /* Removed */; +} +/** + * Check if the given listener has the `capture` flag or not. + * @param listener The listener to check. + */ +function isCapture(listener) { + return (listener.flags & 1 /* Capture */) === 1 /* Capture */; +} +/** + * Check if the given listener has the `passive` flag or not. + * @param listener The listener to check. + */ +function isPassive(listener) { + return (listener.flags & 2 /* Passive */) === 2 /* Passive */; +} +/** + * Check if the given listener has the `once` flag or not. + * @param listener The listener to check. + */ +function isOnce(listener) { + return (listener.flags & 4 /* Once */) === 4 /* Once */; +} +/** + * Check if the given listener has the `removed` flag or not. + * @param listener The listener to check. + */ +function isRemoved(listener) { + return (listener.flags & 8 /* Removed */) === 8 /* Removed */; +} +/** + * Call an event listener. + * @param listener The listener to call. + * @param target The event target object for `thisArg`. + * @param event The event object for the first argument. + * @param attribute `true` if this callback is an event attribute handler. + */ +function invokeCallback({ callback }, target, event) { + try { + if (typeof callback === "function") { + callback.call(target, event); + } + else if (typeof callback.handleEvent === "function") { + callback.handleEvent(event); + } + } + catch (thrownError) { + reportError(thrownError); + } +} + +/** + * Find the index of given listener. + * This returns `-1` if not found. + * @param list The listener list. + * @param callback The callback function to find. + * @param capture The capture flag to find. + */ +function findIndexOfListener({ listeners }, callback, capture) { + for (let i = 0; i < listeners.length; ++i) { + if (listeners[i].callback === callback && + isCapture(listeners[i]) === capture) { + return i; + } + } + return -1; +} +/** + * Add the given listener. + * Does copy-on-write if needed. + * @param list The listener list. + * @param callback The callback function. + * @param capture The capture flag. + * @param passive The passive flag. + * @param once The once flag. + * @param signal The abort signal. + */ +function addListener(list, callback, capture, passive, once, signal) { + let signalListener; + if (signal) { + signalListener = removeListener.bind(null, list, callback, capture); + signal.addEventListener("abort", signalListener); + } + const listener = createListener(callback, capture, passive, once, signal, signalListener); + if (list.cow) { + list.cow = false; + list.listeners = [...list.listeners, listener]; + } + else { + list.listeners.push(listener); + } + return listener; +} +/** + * Remove a listener. + * @param list The listener list. + * @param callback The callback function to find. + * @param capture The capture flag to find. + * @returns `true` if it mutated the list directly. + */ +function removeListener(list, callback, capture) { + const index = findIndexOfListener(list, callback, capture); + if (index !== -1) { + return removeListenerAt(list, index); + } + return false; +} +/** + * Remove a listener. + * @param list The listener list. + * @param index The index of the target listener. + * @param disableCow Disable copy-on-write if true. + * @returns `true` if it mutated the `listeners` array directly. + */ +function removeListenerAt(list, index, disableCow = false) { + const listener = list.listeners[index]; + // Set the removed flag. + setRemoved(listener); + // Dispose the abort signal listener if exists. + if (listener.signal) { + listener.signal.removeEventListener("abort", listener.signalListener); + } + // Remove it from the array. + if (list.cow && !disableCow) { + list.cow = false; + list.listeners = list.listeners.filter((_, i) => i !== index); + return false; + } + list.listeners.splice(index, 1); + return true; +} + +/** + * Create a new `ListenerListMap` object. + */ +function createListenerListMap() { + return Object.create(null); +} +/** + * Get the listener list of the given type. + * If the listener list has not been initialized, initialize and return it. + * @param listenerMap The listener list map. + * @param type The event type to get. + */ +function ensureListenerList(listenerMap, type) { + var _a; + return ((_a = listenerMap[type]) !== null && _a !== void 0 ? _a : (listenerMap[type] = { + attrCallback: undefined, + attrListener: undefined, + cow: false, + listeners: [], + })); +} + +/** + * An implementation of the `EventTarget` interface. + * @see https://dom.spec.whatwg.org/#eventtarget + */ +class EventTarget { + /** + * Initialize this instance. + */ + constructor() { + internalDataMap$2.set(this, createListenerListMap()); + } + // Implementation + addEventListener(type0, callback0, options0) { + const listenerMap = $$2(this); + const { callback, capture, once, passive, signal, type, } = normalizeAddOptions(type0, callback0, options0); + if (callback == null || (signal === null || signal === void 0 ? void 0 : signal.aborted)) { + return; + } + const list = ensureListenerList(listenerMap, type); + // Find existing listener. + const i = findIndexOfListener(list, callback, capture); + if (i !== -1) { + warnDuplicate(list.listeners[i], passive, once, signal); + return; + } + // Add the new listener. + addListener(list, callback, capture, passive, once, signal); + } + // Implementation + removeEventListener(type0, callback0, options0) { + const listenerMap = $$2(this); + const { callback, capture, type } = normalizeOptions(type0, callback0, options0); + const list = listenerMap[type]; + if (callback != null && list) { + removeListener(list, callback, capture); + } + } + // Implementation + dispatchEvent(e) { + const list = $$2(this)[String(e.type)]; + if (list == null) { + return true; + } + const event = e instanceof Event ? e : EventWrapper.wrap(e); + const eventData = $(event, "event"); + if (eventData.dispatchFlag) { + throw new DOMException("This event has been in dispatching."); + } + eventData.dispatchFlag = true; + eventData.target = eventData.currentTarget = this; + if (!eventData.stopPropagationFlag) { + const { cow, listeners } = list; + // Set copy-on-write flag. + list.cow = true; + // Call listeners. + for (let i = 0; i < listeners.length; ++i) { + const listener = listeners[i]; + // Skip if removed. + if (isRemoved(listener)) { + continue; + } + // Remove this listener if has the `once` flag. + if (isOnce(listener) && removeListenerAt(list, i, !cow)) { + // Because this listener was removed, the next index is the + // same as the current value. + i -= 1; + } + // Call this listener with the `passive` flag. + eventData.inPassiveListenerFlag = isPassive(listener); + invokeCallback(listener, this, event); + eventData.inPassiveListenerFlag = false; + // Stop if the `event.stopImmediatePropagation()` method was called. + if (eventData.stopImmediatePropagationFlag) { + break; + } + } + // Restore copy-on-write flag. + if (!cow) { + list.cow = false; + } + } + eventData.target = null; + eventData.currentTarget = null; + eventData.stopImmediatePropagationFlag = false; + eventData.stopPropagationFlag = false; + eventData.dispatchFlag = false; + return !eventData.canceledFlag; + } +} +/** + * Internal data. + */ +const internalDataMap$2 = new WeakMap(); +/** + * Get private data. + * @param target The event target object to get private data. + * @param name The variable name to report. + * @returns The private data of the event. + */ +function $$2(target, name = "this") { + const retv = internalDataMap$2.get(target); + assertType(retv != null, "'%s' must be an object that EventTarget constructor created, but got another one: %o", name, target); + return retv; +} +/** + * Normalize options. + * @param options The options to normalize. + */ +function normalizeAddOptions(type, callback, options) { + var _a; + assertCallback(callback); + if (typeof options === "object" && options !== null) { + return { + type: String(type), + callback: callback !== null && callback !== void 0 ? callback : undefined, + capture: Boolean(options.capture), + passive: Boolean(options.passive), + once: Boolean(options.once), + signal: (_a = options.signal) !== null && _a !== void 0 ? _a : undefined, + }; + } + return { + type: String(type), + callback: callback !== null && callback !== void 0 ? callback : undefined, + capture: Boolean(options), + passive: false, + once: false, + signal: undefined, + }; +} +/** + * Normalize options. + * @param options The options to normalize. + */ +function normalizeOptions(type, callback, options) { + assertCallback(callback); + if (typeof options === "object" && options !== null) { + return { + type: String(type), + callback: callback !== null && callback !== void 0 ? callback : undefined, + capture: Boolean(options.capture), + }; + } + return { + type: String(type), + callback: callback !== null && callback !== void 0 ? callback : undefined, + capture: Boolean(options), + }; +} +/** + * Assert the type of 'callback' argument. + * @param callback The callback to check. + */ +function assertCallback(callback) { + if (typeof callback === "function" || + (typeof callback === "object" && + callback !== null && + typeof callback.handleEvent === "function")) { + return; + } + if (callback == null || typeof callback === "object") { + InvalidEventListener.warn(callback); + return; + } + throw new TypeError(format(InvalidEventListener.message, [callback])); +} +/** + * Print warning for duplicated. + * @param listener The current listener that is duplicated. + * @param passive The passive flag of the new duplicated listener. + * @param once The once flag of the new duplicated listener. + * @param signal The signal object of the new duplicated listener. + */ +function warnDuplicate(listener, passive, once, signal) { + EventListenerWasDuplicated.warn(isCapture(listener) ? "capture" : "bubble", listener.callback); + if (isPassive(listener) !== passive) { + OptionWasIgnored.warn("passive"); + } + if (isOnce(listener) !== once) { + OptionWasIgnored.warn("once"); + } + if (listener.signal !== signal) { + OptionWasIgnored.warn("signal"); + } +} +// Set enumerable +const keys$1$1 = Object.getOwnPropertyNames(EventTarget.prototype); +for (let i = 0; i < keys$1$1.length; ++i) { + if (keys$1$1[i] === "constructor") { + continue; + } + Object.defineProperty(EventTarget.prototype, keys$1$1[i], { enumerable: true }); +} +// Ensure `eventTarget instanceof window.EventTarget` is `true`. + +/** + * Get the current value of a given event attribute. + * @param target The `EventTarget` object to get. + * @param type The event type. + */ +function getEventAttributeValue(target, type) { + var _a, _b; + const listMap = $$2(target, "target"); + return (_b = (_a = listMap[type]) === null || _a === void 0 ? void 0 : _a.attrCallback) !== null && _b !== void 0 ? _b : null; +} +/** + * Set an event listener to a given event attribute. + * @param target The `EventTarget` object to set. + * @param type The event type. + * @param callback The event listener. + */ +function setEventAttributeValue(target, type, callback) { + if (callback != null && typeof callback !== "function") { + InvalidAttributeHandler.warn(callback); + } + if (typeof callback === "function" || + (typeof callback === "object" && callback !== null)) { + upsertEventAttributeListener(target, type, callback); + } + else { + removeEventAttributeListener(target, type); + } +} +//------------------------------------------------------------------------------ +// Helpers +//------------------------------------------------------------------------------ +/** + * Update or insert the given event attribute handler. + * @param target The `EventTarget` object to set. + * @param type The event type. + * @param callback The event listener. + */ +function upsertEventAttributeListener(target, type, callback) { + const list = ensureListenerList($$2(target, "target"), String(type)); + list.attrCallback = callback; + if (list.attrListener == null) { + list.attrListener = addListener(list, defineEventAttributeCallback(list), false, false, false, undefined); + } +} +/** + * Remove the given event attribute handler. + * @param target The `EventTarget` object to remove. + * @param type The event type. + * @param callback The event listener. + */ +function removeEventAttributeListener(target, type) { + const listMap = $$2(target, "target"); + const list = listMap[String(type)]; + if (list && list.attrListener) { + removeListener(list, list.attrListener.callback, false); + list.attrCallback = list.attrListener = undefined; + } +} +/** + * Define the callback function for the given listener list object. + * It calls `attrCallback` property if the property value is a function. + * @param list The `ListenerList` object. + */ +function defineEventAttributeCallback(list) { + return function (event) { + const callback = list.attrCallback; + if (typeof callback === "function") { + callback.call(this, event); + } + }; +} +/** + * Define an event attribute. + * @param target The `EventTarget` object to define an event attribute. + * @param type The event type to define. + * @param _eventClass Unused, but to infer `Event` class type. + * @deprecated Use `getEventAttributeValue`/`setEventAttributeValue` pair on your derived class instead because of static analysis friendly. + */ +function defineEventAttribute(target, type, _eventClass) { + Object.defineProperty(target, `on${type}`, { + get() { + return getEventAttributeValue(this, type); + }, + set(value) { + setEventAttributeValue(this, type, value); + }, + configurable: true, + enumerable: true, + }); +} + +/** + * @author Toru Nagashima <https://github.com/mysticatea> + * See LICENSE file in root directory for full license. + */ + +/** + * The signal class. + * @see https://dom.spec.whatwg.org/#abortsignal + */ +class AbortSignal extends EventTarget { + /** + * AbortSignal cannot be constructed directly. + */ + constructor() { + super(); + throw new TypeError("AbortSignal cannot be constructed directly"); + } + /** + * Returns `true` if this `AbortSignal`'s `AbortController` has signaled to abort, and `false` otherwise. + */ + get aborted() { + const aborted = abortedFlags.get(this); + if (typeof aborted !== "boolean") { + throw new TypeError(`Expected 'this' to be an 'AbortSignal' object, but got ${this === null ? "null" : typeof this}`); + } + return aborted; + } +} +defineEventAttribute(AbortSignal.prototype, "abort"); +/** + * Create an AbortSignal object. + */ +function createAbortSignal() { + const signal = Object.create(AbortSignal.prototype); + EventTarget.call(signal); + abortedFlags.set(signal, false); + return signal; +} +/** + * Abort a given signal. + */ +function abortSignal(signal) { + if (abortedFlags.get(signal) !== false) { + return; + } + abortedFlags.set(signal, true); + signal.dispatchEvent({ type: "abort" }); +} +/** + * Aborted flag for each instances. + */ +const abortedFlags = new WeakMap(); +// Properties should be enumerable. +Object.defineProperties(AbortSignal.prototype, { + aborted: { enumerable: true }, +}); +// `toString()` should return `"[object AbortSignal]"` +if (typeof Symbol === "function" && typeof Symbol.toStringTag === "symbol") { + Object.defineProperty(AbortSignal.prototype, Symbol.toStringTag, { + configurable: true, + value: "AbortSignal", + }); +} + +/** + * The AbortController. + * @see https://dom.spec.whatwg.org/#abortcontroller + */ +class AbortController { + /** + * Initialize this controller. + */ + constructor() { + signals.set(this, createAbortSignal()); + } + /** + * Returns the `AbortSignal` object associated with this object. + */ + get signal() { + return getSignal(this); + } + /** + * Abort and signal to any observers that the associated activity is to be aborted. + */ + abort() { + abortSignal(getSignal(this)); + } +} +/** + * Associated signals. + */ +const signals = new WeakMap(); +/** + * Get the associated signal of a given controller. + */ +function getSignal(controller) { + const signal = signals.get(controller); + if (signal == null) { + throw new TypeError(`Expected 'this' to be an 'AbortController' object, but got ${controller === null ? "null" : typeof controller}`); + } + return signal; +} +// Properties should be enumerable. +Object.defineProperties(AbortController.prototype, { + signal: { enumerable: true }, + abort: { enumerable: true }, +}); +if (typeof Symbol === "function" && typeof Symbol.toStringTag === "symbol") { + Object.defineProperty(AbortController.prototype, Symbol.toStringTag, { + configurable: true, + value: "AbortController", + }); +} + +const INTERNAL$2 = { tick: 0, pool: new Map }; +function requestAnimationFrame(callback) { + if (!INTERNAL$2.pool.size) { + setTimeout$1(() => { + const next = __performance_now(); + for (const func of INTERNAL$2.pool.values()) { + func(next); + } + INTERNAL$2.pool.clear(); + }, 1000 / 16); + } + const func = __function_bind(callback, undefined); + const tick = ++INTERNAL$2.tick; + INTERNAL$2.pool.set(tick, func); + return tick; +} +function cancelAnimationFrame(requestId) { + const timeout = INTERNAL$2.pool.get(requestId); + if (timeout) { + clearTimeout$1(timeout); + INTERNAL$2.pool.delete(requestId); + } +} + +function atob(data) { + return Buffer.from(data, 'base64').toString('binary'); +} +function btoa(data) { + return Buffer.from(data, 'binary').toString('base64'); +} + +class Node extends EventTarget { + append(...nodesOrDOMStrings) { + } + appendChild(childNode) { + return childNode; + } + after(...nodesOrDOMStrings) { + } + before(...nodesOrDOMStrings) { + } + prepend(...nodesOrDOMStrings) { + } + replaceChild(newChild, oldChild) { + return oldChild; + } + removeChild(childNode) { + return childNode; + } + get attributes() { + return {}; + } + get childNodes() { + return []; + } + get children() { + return []; + } + get ownerDocument() { + return null; + } + get nodeValue() { + return ''; + } + set nodeValue(value) { + } + get textContent() { + return ''; + } + set textContent(value) { + } + get previousElementSibling() { + return null; + } + get nextElementSibling() { + return null; + } + [Symbol.for('nodejs.util.inspect.custom')](depth, options) { + return `${this.constructor.name}`; + } +} +class DocumentFragment extends Node { +} +class ShadowRoot extends DocumentFragment { + get innerHTML() { + return ''; + } + set innerHTML(value) { + } +} +const NodeFilter$1 = Object.assign({ + NodeFilter() { + throw new TypeError('Illegal constructor'); + } +}.NodeFilter, { + FILTER_ACCEPT: 1, + FILTER_REJECT: 2, + FILTER_SKIP: 3, + SHOW_ALL: 4294967295, + SHOW_ELEMENT: 1, + SHOW_ATTRIBUTE: 2, + SHOW_TEXT: 4, + SHOW_CDATA_SECTION: 8, + SHOW_ENTITY_REFERENCE: 16, + SHOW_ENTITY: 32, + SHOW_PROCESSING_INSTRUCTION: 64, + SHOW_COMMENT: 128, + SHOW_DOCUMENT: 256, + SHOW_DOCUMENT_TYPE: 512, + SHOW_DOCUMENT_FRAGMENT: 1024, + SHOW_NOTATION: 2048, +}); +class NodeIterator$1 { + nextNode() { + return null; + } + previousNode() { + return null; + } + get filter() { + const internals = internalsOf(this, 'NodeIterator', 'filter'); + return internals.filter; + } + get pointerBeforeReferenceNode() { + const internals = internalsOf(this, 'NodeIterator', 'pointerBeforeReferenceNode'); + return internals.pointerBeforeReferenceNode; + } + get referenceNode() { + const internals = internalsOf(this, 'NodeIterator', 'referenceNode'); + return internals.referenceNode; + } + get root() { + const internals = internalsOf(this, 'NodeIterator', 'root'); + return internals.root; + } + get whatToShow() { + const internals = internalsOf(this, 'NodeIterator', 'whatToShow'); + return internals.whatToShow; + } +} +allowStringTag(Node); +allowStringTag(NodeIterator$1); +allowStringTag(DocumentFragment); +allowStringTag(ShadowRoot); + +class CharacterData extends Node { + constructor(data) { + INTERNALS$3.set(super(), { + data: String(data), + }); + } + get data() { + return internalsOf(this, 'CharacterData', 'data').data; + } + get textContent() { + return internalsOf(this, 'CharacterData', 'textContent').data; + } +} +class Comment extends CharacterData { +} +class Text extends CharacterData { + get assignedSlot() { + return null; + } + get wholeText() { + return internalsOf(this, 'CharacterData', 'textContent').data; + } +} +allowStringTag(CharacterData); +allowStringTag(Text); +allowStringTag(Comment); + +/** + * web-streams-polyfill v3.2.0 + */ +/// <reference lib="es2015.symbol" /> +const SymbolPolyfill = Symbol; + +/// <reference lib="dom" /> +function noop$1() { + return undefined; +} + +function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +const rethrowAssertionErrorRejection = noop$1; + +const originalPromise = Promise; +const originalPromiseThen = Promise.prototype.then; +const originalPromiseResolve = Promise.resolve.bind(originalPromise); +const originalPromiseReject = Promise.reject.bind(originalPromise); +function newPromise(executor) { + return new originalPromise(executor); +} +function promiseResolvedWith(value) { + return originalPromiseResolve(value); +} +function promiseRejectedWith(reason) { + return originalPromiseReject(reason); +} +function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); +} +function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); +} +function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); +} +function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); +} +function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); +} +function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); +} +function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); +} +function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } +} + +// Original from Chromium +// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js +const QUEUE_MAX_ARRAY_SIZE = 16384; +/** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ +class SimpleQueue { + constructor() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + get length() { + return this._size; + } + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + push(element) { + const oldBack = this._back; + let newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + } + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + shift() { // must not be called on an empty queue + const oldFront = this._front; + let newFront = oldFront; + const oldCursor = this._cursor; + let newCursor = oldCursor + 1; + const elements = oldFront._elements; + const element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + } + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + forEach(callback) { + let i = this._cursor; + let node = this._front; + let elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + } + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + peek() { // must not be called on an empty queue + const front = this._front; + const cursor = this._cursor; + return front._elements[cursor]; + } +} + +function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } +} +// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state +// check. +function ReadableStreamReaderGenericCancel(reader, reason) { + const stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); +} +function ReadableStreamReaderGenericRelease(reader) { + if (reader._ownerReadableStream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + reader._ownerReadableStream._reader = undefined; + reader._ownerReadableStream = undefined; +} +// Helper functions for the readers. +function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise((resolve, reject) => { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); +} +function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); +} +function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); +} +function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} +function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); +} +function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} + +const AbortSteps = SymbolPolyfill('[[AbortSteps]]'); +const ErrorSteps = SymbolPolyfill('[[ErrorSteps]]'); +const CancelSteps = SymbolPolyfill('[[CancelSteps]]'); +const PullSteps = SymbolPolyfill('[[PullSteps]]'); + +/// <reference lib="es2015.core" /> +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill +const NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); +}; + +/// <reference lib="es2015.core" /> +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill +const MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); +}; + +// https://heycam.github.io/webidl/#idl-dictionaries +function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; +} +function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError(`${context} is not an object.`); + } +} +// https://heycam.github.io/webidl/#idl-callback-functions +function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError(`${context} is not a function.`); + } +} +// https://heycam.github.io/webidl/#idl-object +function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError(`${context} is not an object.`); + } +} +function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError(`Parameter ${position} is required in '${context}'.`); + } +} +function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError(`${field} is required in '${context}'.`); + } +} +// https://heycam.github.io/webidl/#idl-unrestricted-double +function convertUnrestrictedDouble(value) { + return Number(value); +} +function censorNegativeZero(x) { + return x === 0 ? 0 : x; +} +function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); +} +// https://heycam.github.io/webidl/#idl-unsigned-long-long +function convertUnsignedLongLongWithEnforceRange(value, context) { + const lowerBound = 0; + const upperBound = Number.MAX_SAFE_INTEGER; + let x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError(`${context} is not a finite number`); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; +} + +function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError(`${context} is not a ReadableStream.`); + } +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); +} +function ReadableStreamFulfillReadRequest(stream, chunk, done) { + const reader = stream._reader; + const readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; +} +function ReadableStreamHasDefaultReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; +} +/** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ +class ReadableStreamDefaultReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: () => resolvePromise({ value: undefined, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + if (this._readRequests.length > 0) { + throw new TypeError('Tried to release a reader lock when that reader has pending read() calls un-settled'); + } + ReadableStreamReaderGenericRelease(this); + } +} +Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +// Abstract operations for the readers. +function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; +} +function ReadableStreamDefaultReaderRead(reader, readRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`); +} + +/// <reference lib="es2018.asynciterable" /> +class ReadableStreamAsyncIteratorImpl { + constructor(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + next() { + const nextSteps = () => this._nextSteps(); + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + } + return(value) { + const returnSteps = () => this._returnSteps(value); + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + } + _nextSteps() { + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + const reader = this._reader; + if (reader._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('iterate')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => { + this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + queueMicrotask(() => resolvePromise({ value: chunk, done: false })); + }, + _closeSteps: () => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: reason => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + } + _returnSteps(value) { + if (this._isFinished) { + return Promise.resolve({ value, done: true }); + } + this._isFinished = true; + const reader = this._reader; + if (reader._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('finish iterating')); + } + if (!this._preventCancel) { + const result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, () => ({ value, done: true })); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value, done: true }); + } +} +const ReadableStreamAsyncIteratorPrototype = { + next() { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return(value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } +}; +// Abstract operations for the ReadableStream. +function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + const reader = AcquireReadableStreamDefaultReader(stream); + const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + const iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; +} +function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } +} +// Helper functions for the ReadableStream. +function streamAsyncIteratorBrandCheckException(name) { + return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`); +} + +/// <reference lib="es2015.core" /> +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill +const NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; +}; + +function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); +} +function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); +} +// Not implemented correctly +function TransferArrayBuffer(O) { + return O; +} +// Not implemented correctly +// eslint-disable-next-line @typescript-eslint/no-unused-vars +function IsDetachedBuffer(O) { + return false; +} +function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + const length = end - begin; + const slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; +} + +function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; +} +function CloneAsUint8Array(O) { + const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); +} + +function DequeueValue(container) { + const pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; +} +function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value, size }); + container._queueTotalSize += size; +} +function PeekQueueValue(container) { + const pair = container._queue.peek(); + return pair.value; +} +function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; +} + +/** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ +class ReadableStreamBYOBRequest { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get view() { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + } + respond(bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) ; + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + } + respondWithNewView(view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) ; + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + } +} +Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } +}); +/** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ +class ReadableByteStreamController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get byobRequest() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`); + } + ReadableByteStreamControllerClose(this); + } + enqueue(chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError(`chunk's buffer must have non-zero byteLength`); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`); + } + ReadableByteStreamControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + const entry = this._queue.shift(); + this._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(this); + const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); + return; + } + const autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + let buffer; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + } +} +Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } +}); +// Abstract operations for the ReadableByteStreamController. +function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; +} +function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; +} +function ReadableByteStreamControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + }, e => { + ReadableByteStreamControllerError(controller, e); + }); +} +function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); +} +function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + let done = false; + if (stream._state === 'closed') { + done = true; + } + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } +} +function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + const bytesFilled = pullIntoDescriptor.bytesFilled; + const elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); +} +function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer, byteOffset, byteLength }); + controller._queueTotalSize += byteLength; +} +function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + const elementSize = pullIntoDescriptor.elementSize; + const currentAlignedBytes = pullIntoDescriptor.bytesFilled - pullIntoDescriptor.bytesFilled % elementSize; + const maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + const maxAlignedBytes = maxBytesFilled - maxBytesFilled % elementSize; + let totalBytesToCopyRemaining = maxBytesToCopy; + let ready = false; + if (maxAlignedBytes > currentAlignedBytes) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + const queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + const headOfQueue = queue.peek(); + const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; +} +function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; +} +function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } +} +function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; +} +function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerPullInto(controller, view, readIntoRequest) { + const stream = controller._controlledReadableByteStream; + let elementSize = 1; + if (view.constructor !== DataView) { + elementSize = view.constructor.BYTES_PER_ELEMENT; + } + const ctor = view.constructor; + // try { + const buffer = TransferArrayBuffer(view.buffer); + // } catch (e) { + // readIntoRequest._errorSteps(e); + // return; + // } + const pullIntoDescriptor = { + buffer, + bufferByteLength: buffer.byteLength, + byteOffset: view.byteOffset, + byteLength: view.byteLength, + bytesFilled: 0, + elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + const stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.elementSize) { + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + const remainder = ArrayBufferSlice(pullIntoDescriptor.buffer, end - remainderSize, end); + ReadableByteStreamControllerEnqueueChunkToQueue(controller, remainder, 0, remainder.byteLength); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); +} +function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerShiftPendingPullInto(controller) { + const descriptor = controller._pendingPullIntos.shift(); + return descriptor; +} +function ReadableByteStreamControllerShouldCallPull(controller) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +// A client of ReadableByteStreamController may use these functions directly to bypass state check. +function ReadableByteStreamControllerClose(controller) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled > 0) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); +} +function ReadableByteStreamControllerEnqueue(controller, chunk) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + const buffer = chunk.buffer; + const byteOffset = chunk.byteOffset; + const byteLength = chunk.byteLength; + const transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) ; + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + if (ReadableStreamHasDefaultReader(stream)) { + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerError(controller, e) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + const byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; +} +function ReadableByteStreamControllerGetDesiredSize(controller) { + const state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +function ReadableByteStreamControllerRespond(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); +} +function ReadableByteStreamControllerRespondWithNewView(controller, view) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + const viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); +} +function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + }, r => { + ReadableByteStreamControllerError(controller, r); + }); +} +function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + const controller = Object.create(ReadableByteStreamController.prototype); + let startAlgorithm = () => undefined; + let pullAlgorithm = () => promiseResolvedWith(undefined); + let cancelAlgorithm = () => promiseResolvedWith(undefined); + if (underlyingByteSource.start !== undefined) { + startAlgorithm = () => underlyingByteSource.start(controller); + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = () => underlyingByteSource.pull(controller); + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingByteSource.cancel(reason); + } + const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); +} +function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; +} +// Helper functions for the ReadableStreamBYOBRequest. +function byobRequestBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`); +} +// Helper functions for the ReadableByteStreamController. +function byteStreamControllerBrandCheckException(name) { + return new TypeError(`ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`); +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); +} +function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + const reader = stream._reader; + const readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; +} +function ReadableStreamHasBYOBReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; +} +/** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ +class ReadableStreamBYOBReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + /** + * Attempts to reads bytes into view, and returns a promise resolved with the result. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read(view) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`)); + } + if (IsDetachedBuffer(view.buffer)) ; + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readIntoRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: chunk => resolvePromise({ value: chunk, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamBYOBReaderRead(this, view, readIntoRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + if (this._readIntoRequests.length > 0) { + throw new TypeError('Tried to release a reader lock when that reader has pending read() calls un-settled'); + } + ReadableStreamReaderGenericRelease(this); + } +} +Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +// Abstract operations for the readers. +function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; +} +function ReadableStreamBYOBReaderRead(reader, view, readIntoRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, readIntoRequest); + } +} +// Helper functions for the ReadableStreamBYOBReader. +function byobReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`); +} + +function ExtractHighWaterMark(strategy, defaultHWM) { + const { highWaterMark } = strategy; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; +} +function ExtractSizeAlgorithm(strategy) { + const { size } = strategy; + if (!size) { + return () => 1; + } + return size; +} + +function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + const size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`) + }; +} +function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return chunk => convertUnrestrictedDouble(fn(chunk)); +} + +function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + const abort = original === null || original === void 0 ? void 0 : original.abort; + const close = original === null || original === void 0 ? void 0 : original.close; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + const write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, `${context} has member 'abort' that`), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, `${context} has member 'close' that`), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, `${context} has member 'start' that`), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, `${context} has member 'write' that`), + type + }; +} +function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} +function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return () => promiseCall(fn, original, []); +} +function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); +} + +function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError(`${context} is not a WritableStream.`); + } +} + +function isAbortSignal$1(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } +} + +/** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ +class WritableStream { + constructor(rawUnderlyingSink = {}, rawStrategy = {}) { + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + const type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get locked() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + } + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason = undefined) { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + } + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close() { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + } + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + } +} +Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } +}); +// Abstract operations for the WritableStream. +function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); +} +// Throws if and only if startAlgorithm throws. +function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + const controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; +} +function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; +} +function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; +} +function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + let wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + const promise = newPromise((resolve, reject) => { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; +} +function WritableStreamClose(stream) { + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError(`The stream (in ${state} state) is not in the writable state and cannot be closed`)); + } + const promise = newPromise((resolve, reject) => { + const closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + const writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; +} +// WritableStream API exposed for controllers. +function WritableStreamAddWriteRequest(stream) { + const promise = newPromise((resolve, reject) => { + const writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; +} +function WritableStreamDealWithRejection(stream, error) { + const state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); +} +function WritableStreamStartErroring(stream, reason) { + const controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + const writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } +} +function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + const storedError = stream._storedError; + stream._writeRequests.forEach(writeRequest => { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, () => { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + }, (reason) => { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + }); +} +function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; +} +function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); +} +function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + const state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } +} +function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); +} +// TODO(ricea): Fix alphabetical order. +function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; +} +function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); +} +function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } +} +function WritableStreamUpdateBackpressure(stream, backpressure) { + const writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; +} +/** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ +class WritableStreamDefaultWriter { + constructor(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + const state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + const storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get closed() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get desiredSize() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + } + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get ready() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + } + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + } + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + } + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + } + write(chunk = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + } +} +Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } +}); +// Abstract operations for the WritableStreamDefaultWriter. +function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; +} +// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. +function WritableStreamDefaultWriterAbort(writer, reason) { + const stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); +} +function WritableStreamDefaultWriterClose(writer) { + const stream = writer._ownerWritableStream; + return WritableStreamClose(stream); +} +function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); +} +function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterGetDesiredSize(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); +} +function WritableStreamDefaultWriterRelease(writer) { + const stream = writer._ownerWritableStream; + const releasedError = new TypeError(`Writer was released and can no longer be used to monitor the stream's closedness`); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; +} +function WritableStreamDefaultWriterWrite(writer, chunk) { + const stream = writer._ownerWritableStream; + const controller = stream._writableStreamController; + const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + const state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + const promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; +} +const closeSentinel = {}; +/** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ +class WritableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get abortReason() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + } + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get signal() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + } + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e = undefined) { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + const state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + } + /** @internal */ + [AbortSteps](reason) { + const result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [ErrorSteps]() { + ResetQueue(this); + } +} +Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } +}); +// Abstract operations implementing interface required by the WritableStream. +function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; +} +function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = new AbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + const startResult = startAlgorithm(); + const startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, () => { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + }, r => { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + }); +} +function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + const controller = Object.create(WritableStreamDefaultController.prototype); + let startAlgorithm = () => undefined; + let writeAlgorithm = () => promiseResolvedWith(undefined); + let closeAlgorithm = () => promiseResolvedWith(undefined); + let abortAlgorithm = () => promiseResolvedWith(undefined); + if (underlyingSink.start !== undefined) { + startAlgorithm = () => underlyingSink.start(controller); + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = chunk => underlyingSink.write(chunk, controller); + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = () => underlyingSink.close(); + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = reason => underlyingSink.abort(reason); + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); +} +// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. +function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } +} +function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; +} +function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + const stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +// Abstract operations for the WritableStreamDefaultController. +function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + const stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + const state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + const value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } +} +function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } +} +function WritableStreamDefaultControllerProcessClose(controller) { + const stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + const sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, () => { + WritableStreamFinishInFlightClose(stream); + }, reason => { + WritableStreamFinishInFlightCloseWithError(stream, reason); + }); +} +function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + const stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + const sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, () => { + WritableStreamFinishInFlightWrite(stream); + const state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + }, reason => { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + }); +} +function WritableStreamDefaultControllerGetBackpressure(controller) { + const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; +} +// A client of WritableStreamDefaultController may use these functions directly to bypass state check. +function WritableStreamDefaultControllerError(controller, error) { + const stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); +} +// Helper functions for the WritableStream. +function streamBrandCheckException$2(name) { + return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`); +} +// Helper functions for the WritableStreamDefaultController. +function defaultControllerBrandCheckException$2(name) { + return new TypeError(`WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`); +} +// Helper functions for the WritableStreamDefaultWriter. +function defaultWriterBrandCheckException(name) { + return new TypeError(`WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`); +} +function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); +} +function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise((resolve, reject) => { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); +} +function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); +} +function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); +} +function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; +} +function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; +} +function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise((resolve, reject) => { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; +} +function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); +} +function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); +} +function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; +} +function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); +} +function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; +} +// eslint-disable-next-line no-redeclarelet DOMException$1=DOMException + +function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + const reader = AcquireReadableStreamDefaultReader(source); + const writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + let shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + let currentWrite = promiseResolvedWith(undefined); + return newPromise((resolve, reject) => { + let abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = () => { + const error =new DOMException('Aborted', 'AbortError'); + const actions = []; + if (!preventAbort) { + actions.push(() => { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(() => { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise((resolveLoop, rejectLoop) => { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, () => { + return newPromise((resolveRead, rejectRead) => { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: chunk => { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop$1); + resolveRead(false); + }, + _closeSteps: () => resolveRead(true), + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, storedError => { + if (!preventAbort) { + shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, storedError => { + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, () => { + if (!preventClose) { + shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer)); + } + else { + shutdown(); + } + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed); + } + else { + shutdown(true, destClosed); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + const oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), () => finalize(originalIsError, originalError), newError => finalize(true, newError)); + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error)); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + } + }); +} + +/** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ +class ReadableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + } + enqueue(chunk = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableStream; + if (this._queue.length > 0) { + const chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + } +} +Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } +}); +// Abstract operations for the ReadableStreamDefaultController. +function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; +} +function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + }, e => { + ReadableStreamDefaultControllerError(controller, e); + }); +} +function ReadableStreamDefaultControllerShouldCallPull(controller) { + const stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +// A client of ReadableStreamDefaultController may use these functions directly to bypass state check. +function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } +} +function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + let chunkSize; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); +} +function ReadableStreamDefaultControllerError(controller, e) { + const stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableStreamDefaultControllerGetDesiredSize(controller) { + const state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +// This is used in the implementation of TransformStream. +function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; +} +function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + const state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; +} +function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + }, r => { + ReadableStreamDefaultControllerError(controller, r); + }); +} +function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + const controller = Object.create(ReadableStreamDefaultController.prototype); + let startAlgorithm = () => undefined; + let pullAlgorithm = () => promiseResolvedWith(undefined); + let cancelAlgorithm = () => promiseResolvedWith(undefined); + if (underlyingSource.start !== undefined) { + startAlgorithm = () => underlyingSource.start(controller); + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = () => underlyingSource.pull(controller); + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingSource.cancel(reason); + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); +} +// Helper functions for the ReadableStreamDefaultController. +function defaultControllerBrandCheckException$1(name) { + return new TypeError(`ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`); +} + +function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); +} +function ReadableStreamDefaultTee(stream, cloneForBranch2) { + const reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgain = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + queueMicrotask(() => { + readAgain = false; + const chunk1 = chunk; + const chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, (r) => { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }); + return [branch1, branch2]; +} +function ReadableByteStreamTee(stream) { + let reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgainForBranch1 = false; + let readAgainForBranch2 = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, r => { + if (thisReader !== reader) { + return; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const chunk1 = chunk; + let chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + const byobBranch = forBranch2 ? branch2 : branch1; + const otherBranch = forBranch2 ? branch1 : branch2; + const readIntoRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + let clonedChunk; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: chunk => { + reading = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; +} + +function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + const original = source; + const autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const pull = original === null || original === void 0 ? void 0 : original.pull; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, `${context} has member 'autoAllocateChunkSize' that`), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, `${context} has member 'cancel' that`), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, `${context} has member 'pull' that`), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, `${context} has member 'start' that`), + type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`) + }; +} +function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} +function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); +} +function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertReadableStreamType(type, context) { + type = `${type}`; + if (type !== 'bytes') { + throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`); + } + return type; +} + +function convertReaderOptions(options, context) { + assertDictionary(options, context); + const mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`) + }; +} +function convertReadableStreamReaderMode(mode, context) { + mode = `${mode}`; + if (mode !== 'byob') { + throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`); + } + return mode; +} + +function convertIteratorOptions(options, context) { + assertDictionary(options, context); + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; +} + +function convertPipeOptions(options, context) { + assertDictionary(options, context); + const preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + const preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + const signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, `${context} has member 'signal' that`); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal + }; +} +function assertAbortSignal(signal, context) { + if (!isAbortSignal$1(signal)) { + throw new TypeError(`${context} is not an AbortSignal.`); + } +} + +function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + const readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, `${context} has member 'readable' that`); + const writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, `${context} has member 'writable' that`); + return { readable, writable }; +} + +/** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ +class ReadableStream { + constructor(rawUnderlyingSource = {}, rawStrategy = {}) { + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + const highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get locked() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + } + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason = undefined) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + } + getReader(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + const options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + } + pipeThrough(rawTransform, rawOptions = {}) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + const transform = convertReadableWritablePair(rawTransform, 'First parameter'); + const options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + const promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + } + pipeTo(destination, rawOptions = {}) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)); + } + let options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + } + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + const branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + } + values(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + const options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + } +} +Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } +}); +// Abstract operations for the ReadableStream. +// Throws if and only if startAlgorithm throws. +function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +// Throws if and only if startAlgorithm throws. +function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; +} +function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; +} +function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; +} +function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; +} +// ReadableStream API exposed for controllers. +function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + const reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + reader._readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._closeSteps(undefined); + }); + reader._readIntoRequests = new SimpleQueue(); + } + const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop$1); +} +function ReadableStreamClose(stream) { + stream._state = 'closed'; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + reader._readRequests.forEach(readRequest => { + readRequest._closeSteps(); + }); + reader._readRequests = new SimpleQueue(); + } +} +function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + reader._readRequests.forEach(readRequest => { + readRequest._errorSteps(e); + }); + reader._readRequests = new SimpleQueue(); + } + else { + reader._readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._errorSteps(e); + }); + reader._readIntoRequests = new SimpleQueue(); + } +} +// Helper functions for the ReadableStream. +function streamBrandCheckException$1(name) { + return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`); +} + +function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; +} + +// The size function must not have a prototype property nor be a constructor +const byteLengthSizeFunction = (chunk) => { + return chunk.byteLength; +}; +Object.defineProperty(byteLengthSizeFunction, 'name', { + value: 'size', + configurable: true +}); +/** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ +class ByteLengthQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get size() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + } +} +Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +// Helper functions for the ByteLengthQueuingStrategy. +function byteLengthBrandCheckException(name) { + return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`); +} +function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; +} + +// The size function must not have a prototype property nor be a constructor +const countSizeFunction = () => { + return 1; +}; +Object.defineProperty(countSizeFunction, 'name', { + value: 'size', + configurable: true +}); +/** + * A queuing strategy that counts the number of chunks. + * + * @public + */ +class CountQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get size() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + } +} +Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +// Helper functions for the CountQueuingStrategy. +function countBrandCheckException(name) { + return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`); +} +function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; +} + +function convertTransformer(original, context) { + assertDictionary(original, context); + const flush = original === null || original === void 0 ? void 0 : original.flush; + const readableType = original === null || original === void 0 ? void 0 : original.readableType; + const start = original === null || original === void 0 ? void 0 : original.start; + const transform = original === null || original === void 0 ? void 0 : original.transform; + const writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, `${context} has member 'flush' that`), + readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, `${context} has member 'start' that`), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, `${context} has member 'transform' that`), + writableType + }; +} +function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); +} +function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); +} + +// Class TransformStream +/** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ +class TransformStream { + constructor(rawTransformer = {}, rawWritableStrategy = {}, rawReadableStrategy = {}) { + if (rawTransformer === undefined) { + rawTransformer = null; + } + const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + const transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + let startPromise_resolve; + const startPromise = newPromise(resolve => { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + /** + * The readable side of the transform stream. + */ + get readable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + } + /** + * The writable side of the transform stream. + */ + get writable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + } +} +Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } +}); +function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + TransformStreamErrorWritableAndUnblockWrite(stream, reason); + return promiseResolvedWith(undefined); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; +} +function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; +} +// This is a no-op if both sides are already errored. +function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); +} +function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } +} +function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(resolve => { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; +} +// Class TransformStreamDefaultController +/** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ +class TransformStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get desiredSize() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + const readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + } + enqueue(chunk = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + } + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + } +} +Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } +}); +// Transform Stream Default Controller Abstract Operations +function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; +} +function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; +} +function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + const controller = Object.create(TransformStreamDefaultController.prototype); + let transformAlgorithm = (chunk) => { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + let flushAlgorithm = () => promiseResolvedWith(undefined); + if (transformer.transform !== undefined) { + transformAlgorithm = chunk => transformer.transform(chunk, controller); + } + if (transformer.flush !== undefined) { + flushAlgorithm = () => transformer.flush(controller); + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm); +} +function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; +} +function TransformStreamDefaultControllerEnqueue(controller, chunk) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } +} +function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); +} +function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + const transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, r => { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); +} +function TransformStreamDefaultControllerTerminate(controller) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + const error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); +} +// TransformStreamDefaultSink Algorithms +function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + const controller = stream._transformStreamController; + if (stream._backpressure) { + const backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, () => { + const writable = stream._writable; + const state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); +} +function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + // abort() is not called synchronously, so it is possible for abort() to be called when the stream is already + // errored. + TransformStreamError(stream, reason); + return promiseResolvedWith(undefined); +} +function TransformStreamDefaultSinkCloseAlgorithm(stream) { + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + const controller = stream._transformStreamController; + const flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + // Return a promise that is fulfilled with undefined on success. + return transformPromiseWith(flushPromise, () => { + if (readable._state === 'errored') { + throw readable._storedError; + } + ReadableStreamDefaultControllerClose(readable._readableStreamController); + }, r => { + TransformStreamError(stream, r); + throw readable._storedError; + }); +} +// TransformStreamDefaultSource Algorithms +function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; +} +// Helper functions for the TransformStreamDefaultController. +function defaultControllerBrandCheckException(name) { + return new TypeError(`TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`); +} +// Helper functions for the TransformStream. +function streamBrandCheckException(name) { + return new TypeError(`TransformStream.prototype.${name} can only be used on a TransformStream`); +} + +/* c8 ignore start */ +// 64 KiB (same size chrome slice theirs blob into Uint8array's) +const POOL_SIZE$1 = 65536; + + +try { + // Don't use node: prefix for this, require+node: is not supported until node v14.14 + // Only `import()` can use prefix in 12.20 and later + const { Blob } = require('buffer'); + if (Blob && !Blob.prototype.stream) { + Blob.prototype.stream = function name (params) { + let position = 0; + const blob = this; + + return new ReadableStream({ + type: 'bytes', + async pull (ctrl) { + const chunk = blob.slice(position, Math.min(blob.size, position + POOL_SIZE$1)); + const buffer = await chunk.arrayBuffer(); + position += buffer.byteLength; + ctrl.enqueue(new Uint8Array(buffer)); + + if (position === blob.size) { + ctrl.close(); + } + } + }) + }; + } +} catch (error) {} +/* c8 ignore end */ + +// 64 KiB (same size chrome slice theirs blob into Uint8array's) +const POOL_SIZE = 65536; + +/** @param {(Blob | Uint8Array)[]} parts */ +async function * toIterator (parts, clone = true) { + for (const part of parts) { + if ('stream' in part) { + yield * (/** @type {AsyncIterableIterator<Uint8Array>} */ (part.stream())); + } else if (ArrayBuffer.isView(part)) { + if (clone) { + let position = part.byteOffset; + const end = part.byteOffset + part.byteLength; + while (position !== end) { + const size = Math.min(end - position, POOL_SIZE); + const chunk = part.buffer.slice(position, position + size); + position += chunk.byteLength; + yield new Uint8Array(chunk); + } + } else { + yield part; + } + /* c8 ignore next 10 */ + } else { + // For blobs that have arrayBuffer but no stream method (nodes buffer.Blob) + let position = 0, b = (/** @type {Blob} */ (part)); + while (position !== b.size) { + const chunk = b.slice(position, Math.min(b.size, position + POOL_SIZE)); + const buffer = await chunk.arrayBuffer(); + position += buffer.byteLength; + yield new Uint8Array(buffer); + } + } + } +} + +const _Blob = class Blob { + /** @type {Array.<(Blob|Uint8Array)>} */ + #parts = [] + #type = '' + #size = 0 + #endings = 'transparent' + + /** + * The Blob() constructor returns a new Blob object. The content + * of the blob consists of the concatenation of the values given + * in the parameter array. + * + * @param {*} blobParts + * @param {{ type?: string, endings?: string }} [options] + */ + constructor (blobParts = [], options = {}) { + if (typeof blobParts !== 'object' || blobParts === null) { + throw new TypeError('Failed to construct \'Blob\': The provided value cannot be converted to a sequence.') + } + + if (typeof blobParts[Symbol.iterator] !== 'function') { + throw new TypeError('Failed to construct \'Blob\': The object must have a callable @@iterator property.') + } + + if (typeof options !== 'object' && typeof options !== 'function') { + throw new TypeError('Failed to construct \'Blob\': parameter 2 cannot convert to dictionary.') + } + + if (options === null) options = {}; + + const encoder = new TextEncoder(); + for (const element of blobParts) { + let part; + if (ArrayBuffer.isView(element)) { + part = new Uint8Array(element.buffer.slice(element.byteOffset, element.byteOffset + element.byteLength)); + } else if (element instanceof ArrayBuffer) { + part = new Uint8Array(element.slice(0)); + } else if (element instanceof Blob) { + part = element; + } else { + part = encoder.encode(`${element}`); + } + + this.#size += ArrayBuffer.isView(part) ? part.byteLength : part.size; + this.#parts.push(part); + } + + this.#endings = `${options.endings === undefined ? 'transparent' : options.endings}`; + const type = options.type === undefined ? '' : String(options.type); + this.#type = /^[\x20-\x7E]*$/.test(type) ? type : ''; + } + + /** + * The Blob interface's size property returns the + * size of the Blob in bytes. + */ + get size () { + return this.#size + } + + /** + * The type property of a Blob object returns the MIME type of the file. + */ + get type () { + return this.#type + } + + /** + * The text() method in the Blob interface returns a Promise + * that resolves with a string containing the contents of + * the blob, interpreted as UTF-8. + * + * @return {Promise<string>} + */ + async text () { + // More optimized than using this.arrayBuffer() + // that requires twice as much ram + const decoder = new TextDecoder(); + let str = ''; + for await (const part of toIterator(this.#parts, false)) { + str += decoder.decode(part, { stream: true }); + } + // Remaining + str += decoder.decode(); + return str + } + + /** + * The arrayBuffer() method in the Blob interface returns a + * Promise that resolves with the contents of the blob as + * binary data contained in an ArrayBuffer. + * + * @return {Promise<ArrayBuffer>} + */ + async arrayBuffer () { + // Easier way... Just a unnecessary overhead + // const view = new Uint8Array(this.size); + // await this.stream().getReader({mode: 'byob'}).read(view); + // return view.buffer; + + const data = new Uint8Array(this.size); + let offset = 0; + for await (const chunk of toIterator(this.#parts, false)) { + data.set(chunk, offset); + offset += chunk.length; + } + + return data.buffer + } + + stream () { + const it = toIterator(this.#parts, true); + + return new ReadableStream({ + // @ts-ignore + type: 'bytes', + async pull (ctrl) { + const chunk = await it.next(); + chunk.done ? ctrl.close() : ctrl.enqueue(chunk.value); + }, + + async cancel () { + await it.return(); + } + }) + } + + /** + * The Blob interface's slice() method creates and returns a + * new Blob object which contains data from a subset of the + * blob on which it's called. + * + * @param {number} [start] + * @param {number} [end] + * @param {string} [type] + */ + slice (start = 0, end = this.size, type = '') { + const { size } = this; + + let relativeStart = start < 0 ? Math.max(size + start, 0) : Math.min(start, size); + let relativeEnd = end < 0 ? Math.max(size + end, 0) : Math.min(end, size); + + const span = Math.max(relativeEnd - relativeStart, 0); + const parts = this.#parts; + const blobParts = []; + let added = 0; + + for (const part of parts) { + // don't add the overflow to new blobParts + if (added >= span) { + break + } + + const size = ArrayBuffer.isView(part) ? part.byteLength : part.size; + if (relativeStart && size <= relativeStart) { + // Skip the beginning and change the relative + // start & end position as we skip the unwanted parts + relativeStart -= size; + relativeEnd -= size; + } else { + let chunk; + if (ArrayBuffer.isView(part)) { + chunk = part.subarray(relativeStart, Math.min(size, relativeEnd)); + added += chunk.byteLength; + } else { + chunk = part.slice(relativeStart, Math.min(size, relativeEnd)); + added += chunk.size; + } + relativeEnd -= size; + blobParts.push(chunk); + relativeStart = 0; // All next sequential parts should start at 0 + } + } + + const blob = new Blob([], { type: String(type).toLowerCase() }); + blob.#size = span; + blob.#parts = blobParts; + + return blob + } + + get [Symbol.toStringTag] () { + return 'Blob' + } + + static [Symbol.hasInstance] (object) { + return ( + object && + typeof object === 'object' && + typeof object.constructor === 'function' && + ( + typeof object.stream === 'function' || + typeof object.arrayBuffer === 'function' + ) && + /^(Blob|File)$/.test(object[Symbol.toStringTag]) + ) + } +}; + +Object.defineProperties(_Blob.prototype, { + size: { enumerable: true }, + type: { enumerable: true }, + slice: { enumerable: true } +}); + +/** @type {typeof globalThis.Blob} */ +const Blob = _Blob; + +const _File = class File extends Blob { + #lastModified = 0 + #name = '' + + /** + * @param {*[]} fileBits + * @param {string} fileName + * @param {{lastModified?: number, type?: string}} options + */// @ts-ignore + constructor (fileBits, fileName, options = {}) { + if (arguments.length < 2) { + throw new TypeError(`Failed to construct 'File': 2 arguments required, but only ${arguments.length} present.`) + } + super(fileBits, options); + + if (options === null) options = {}; + + // Simulate WebIDL type casting for NaN value in lastModified option. + const lastModified = options.lastModified === undefined ? Date.now() : Number(options.lastModified); + if (!Number.isNaN(lastModified)) { + this.#lastModified = lastModified; + } + + this.#name = String(fileName); + } + + get name () { + return this.#name + } + + get lastModified () { + return this.#lastModified + } + + get [Symbol.toStringTag] () { + return 'File' + } + + static [Symbol.hasInstance] (object) { + return !!object && object instanceof Blob && + /^(File)$/.test(object[Symbol.toStringTag]) + } +}; + +/** @type {typeof globalThis.File} */// @ts-ignore +const File = _File; + +class CustomEvent extends Event { + constructor(type, params) { + params = Object(params); + super(type, params); + if ('detail' in params) + this.detail = params.detail; + } +} +allowStringTag(CustomEvent); + +class TreeWalker { + parentNode() { + return null; + } + firstChild() { + return null; + } + lastChild() { + return null; + } + previousSibling() { + return null; + } + nextSibling() { + return null; + } + previousNode() { + return null; + } + nextNode() { + return null; + } + get currentNode() { + const internals = internalsOf(this, 'TreeWalker', 'currentNode'); + return internals.currentNode; + } + get root() { + const internals = internalsOf(this, 'TreeWalker', 'root'); + return internals.root; + } + get whatToShow() { + const internals = internalsOf(this, 'TreeWalker', 'whatToShow'); + return internals.whatToShow; + } +} +allowStringTag(TreeWalker); + +const INTERNAL$1 = { tick: 0, pool: new Map }; +function requestIdleCallback(callback) { + if (!INTERNAL$1.pool.size) { + setTimeout$1(() => { + const next = __performance_now(); + for (const func of INTERNAL$1.pool.values()) { + func(next); + } + INTERNAL$1.pool.clear(); + }, 1000 / 16); + } + const func = __function_bind(callback, undefined); + const tick = ++INTERNAL$1.tick; + INTERNAL$1.pool.set(tick, func); + return tick; +} +function cancelIdleCallback(requestId) { + const timeout = INTERNAL$1.pool.get(requestId); + if (timeout) { + clearTimeout$1(timeout); + INTERNAL$1.pool.delete(requestId); + } +} + +/** + * Returns a `Buffer` instance from the given data URI `uri`. + * + * @param {String} uri Data URI to turn into a Buffer instance + * @returns {Buffer} Buffer instance from Data URI + * @api public + */ +function dataUriToBuffer(uri) { + if (!/^data:/i.test(uri)) { + throw new TypeError('`uri` does not appear to be a Data URI (must begin with "data:")'); + } + // strip newlines + uri = uri.replace(/\r?\n/g, ''); + // split the URI up into the "metadata" and the "data" portions + const firstComma = uri.indexOf(','); + if (firstComma === -1 || firstComma <= 4) { + throw new TypeError('malformed data: URI'); + } + // remove the "data:" scheme and parse the metadata + const meta = uri.substring(5, firstComma).split(';'); + let charset = ''; + let base64 = false; + const type = meta[0] || 'text/plain'; + let typeFull = type; + for (let i = 1; i < meta.length; i++) { + if (meta[i] === 'base64') { + base64 = true; + } + else { + typeFull += `;${meta[i]}`; + if (meta[i].indexOf('charset=') === 0) { + charset = meta[i].substring(8); + } + } + } + // defaults to US-ASCII only if type is not provided + if (!meta[0] && !charset.length) { + typeFull += ';charset=US-ASCII'; + charset = 'US-ASCII'; + } + // get the encoded data portion and decode URI-encoded chars + const encoding = base64 ? 'base64' : 'ascii'; + const data = unescape(uri.substring(firstComma + 1)); + const buffer = Buffer.from(data, encoding); + // set `.type` and `.typeFull` properties to MIME type + buffer.type = type; + buffer.typeFull = typeFull; + // set the `.charset` property + buffer.charset = charset; + return buffer; +} + +/*! formdata-polyfill. MIT License. Jimmy Wärting <https://jimmy.warting.se/opensource> */ + +var {toStringTag:t$1,iterator:i$1,hasInstance:h$1}=Symbol, +r$1=Math.random, +m$1='append,set,get,getAll,delete,keys,values,entries,forEach,constructor'.split(','), +f$2=(a,b,c)=>(a+='',/^(Blob|File)$/.test(b && b[t$1])?[(c=c!==void 0?c+'':b[t$1]=='File'?b.name:'blob',a),b.name!==c||b[t$1]=='blob'?new File([b],c,b):b]:[a,b+'']), +e$1=(c,f)=>(f?c:c.replace(/\r?\n|\r/g,'\r\n')).replace(/\n/g,'%0A').replace(/\r/g,'%0D').replace(/"/g,'%22'), +x$1=(n, a, e)=>{if(a.length<e){throw new TypeError(`Failed to execute '${n}' on 'FormData': ${e} arguments required, but only ${a.length} present.`)}}; + +/** @type {typeof globalThis.FormData} */ +const FormData = class FormData { +#d=[]; +constructor(...a){if(a.length)throw new TypeError(`Failed to construct 'FormData': parameter 1 is not of type 'HTMLFormElement'.`)} +get [t$1]() {return 'FormData'} +[i$1](){return this.entries()} +static [h$1](o) {return o&&typeof o==='object'&&o[t$1]==='FormData'&&!m$1.some(m=>typeof o[m]!='function')} +append(...a){x$1('append',arguments,2);this.#d.push(f$2(...a));} +delete(a){x$1('delete',arguments,1);a+='';this.#d=this.#d.filter(([b])=>b!==a);} +get(a){x$1('get',arguments,1);a+='';for(var b=this.#d,l=b.length,c=0;c<l;c++)if(b[c][0]===a)return b[c][1];return null} +getAll(a,b){x$1('getAll',arguments,1);b=[];a+='';this.#d.forEach(c=>c[0]===a&&b.push(c[1]));return b} +has(a){x$1('has',arguments,1);a+='';return this.#d.some(b=>b[0]===a)} +forEach(a,b){x$1('forEach',arguments,1);for(var [c,d]of this)a.call(b,d,c,this);} +set(...a){x$1('set',arguments,2);var b=[],c=!0;a=f$2(...a);this.#d.forEach(d=>{d[0]===a[0]?c&&(c=!b.push(a)):b.push(d);});c&&b.push(a);this.#d=b;} +*entries(){yield*this.#d;} +*keys(){for(var[a]of this)yield a;} +*values(){for(var[,a]of this)yield a;}}; + +/** @param {FormData} F */ +function formDataToBlob (F,B=Blob){ +var b=`${r$1()}${r$1()}`.replace(/\./g, '').slice(-28).padStart(32, '-'),c=[],p=`--${b}\r\nContent-Disposition: form-data; name="`; +F.forEach((v,n)=>typeof v=='string' +?c.push(p+e$1(n)+`"\r\n\r\n${v.replace(/\r(?!\n)|(?<!\r)\n/g, '\r\n')}\r\n`) +:c.push(p+e$1(n)+`"; filename="${e$1(v.name, 1)}"\r\nContent-Type: ${v.type||"application/octet-stream"}\r\n\r\n`, v, '\r\n')); +c.push(`--${b}--`); +return new B(c,{type:"multipart/form-data; boundary="+b})} + +class FetchBaseError extends Error { + constructor(message, type) { + super(message); + // Hide custom error implementation details from end-users + Error.captureStackTrace(this, this.constructor); + + this.type = type; + } + + get name() { + return this.constructor.name; + } + + get [Symbol.toStringTag]() { + return this.constructor.name; + } +} + +/** + * @typedef {{ address?: string, code: string, dest?: string, errno: number, info?: object, message: string, path?: string, port?: number, syscall: string}} SystemError +*/ + +/** + * FetchError interface for operational errors + */ +class FetchError extends FetchBaseError { + /** + * @param {string} message - Error message for human + * @param {string} [type] - Error type for machine + * @param {SystemError} [systemError] - For Node.js system error + */ + constructor(message, type, systemError) { + super(message, type); + // When err.type is `system`, err.erroredSysCall contains system error and err.code contains system error code + if (systemError) { + // eslint-disable-next-line no-multi-assign + this.code = this.errno = systemError.code; + this.erroredSysCall = systemError.syscall; + } + } +} + +/** + * Is.js + * + * Object type checks. + */ + +const NAME = Symbol.toStringTag; + +/** + * Check if `obj` is a URLSearchParams object + * ref: https://github.com/node-fetch/node-fetch/issues/296#issuecomment-307598143 + * @param {*} object - Object to check for + * @return {boolean} + */ +const isURLSearchParameters = object => { + return ( + typeof object === 'object' && + typeof object.append === 'function' && + typeof object.delete === 'function' && + typeof object.get === 'function' && + typeof object.getAll === 'function' && + typeof object.has === 'function' && + typeof object.set === 'function' && + typeof object.sort === 'function' && + object[NAME] === 'URLSearchParams' + ); +}; + +/** + * Check if `object` is a W3C `Blob` object (which `File` inherits from) + * @param {*} object - Object to check for + * @return {boolean} + */ +const isBlob = object => { + return ( + object && + typeof object === 'object' && + typeof object.arrayBuffer === 'function' && + typeof object.type === 'string' && + typeof object.stream === 'function' && + typeof object.constructor === 'function' && + /^(Blob|File)$/.test(object[NAME]) + ); +}; + +/** + * Check if `obj` is an instance of AbortSignal. + * @param {*} object - Object to check for + * @return {boolean} + */ +const isAbortSignal = object => { + return ( + typeof object === 'object' && ( + object[NAME] === 'AbortSignal' || + object[NAME] === 'EventTarget' + ) + ); +}; + +/** + * isDomainOrSubdomain reports whether sub is a subdomain (or exact match) of + * the parent domain. + * + * Both domains must already be in canonical form. + * @param {string|URL} original + * @param {string|URL} destination + */ +const isDomainOrSubdomain = (destination, original) => { + const orig = new URL(original).hostname; + const dest = new URL(destination).hostname; + + return orig === dest || orig.endsWith(`.${dest}`); +}; + +const pipeline = promisify(Stream.pipeline); +const INTERNALS$2 = Symbol('Body internals'); + +/** + * Body mixin + * + * Ref: https://fetch.spec.whatwg.org/#body + * + * @param Stream body Readable stream + * @param Object opts Response options + * @return Void + */ +class Body { + constructor(body, { + size = 0 + } = {}) { + let boundary = null; + + if (body === null) { + // Body is undefined or null + body = null; + } else if (isURLSearchParameters(body)) { + // Body is a URLSearchParams + body = Buffer.from(body.toString()); + } else if (isBlob(body)) ; else if (Buffer.isBuffer(body)) ; else if (types.isAnyArrayBuffer(body)) { + // Body is ArrayBuffer + body = Buffer.from(body); + } else if (ArrayBuffer.isView(body)) { + // Body is ArrayBufferView + body = Buffer.from(body.buffer, body.byteOffset, body.byteLength); + } else if (body instanceof Stream) ; else if (body instanceof FormData) { + // Body is FormData + body = formDataToBlob(body); + boundary = body.type.split('=')[1]; + } else { + // None of the above + // coerce to string then buffer + body = Buffer.from(String(body)); + } + + let stream = body; + + if (Buffer.isBuffer(body)) { + stream = Stream.Readable.from(body); + } else if (isBlob(body)) { + stream = Stream.Readable.from(body.stream()); + } + + this[INTERNALS$2] = { + body, + stream, + boundary, + disturbed: false, + error: null + }; + this.size = size; + + if (body instanceof Stream) { + body.on('error', error_ => { + const error = error_ instanceof FetchBaseError ? + error_ : + new FetchError(`Invalid response body while trying to fetch ${this.url}: ${error_.message}`, 'system', error_); + this[INTERNALS$2].error = error; + }); + } + } + + get body() { + return this[INTERNALS$2].stream; + } + + get bodyUsed() { + return this[INTERNALS$2].disturbed; + } + + /** + * Decode response as ArrayBuffer + * + * @return Promise + */ + async arrayBuffer() { + const {buffer, byteOffset, byteLength} = await consumeBody(this); + return buffer.slice(byteOffset, byteOffset + byteLength); + } + + async formData() { + const ct = this.headers.get('content-type'); + + if (ct.startsWith('application/x-www-form-urlencoded')) { + const formData = new FormData(); + const parameters = new URLSearchParams(await this.text()); + + for (const [name, value] of parameters) { + formData.append(name, value); + } + + return formData; + } + + const {toFormData} = await Promise.resolve().then(function () { return multipartParser; }); + return toFormData(this.body, ct); + } + + /** + * Return raw response as Blob + * + * @return Promise + */ + async blob() { + const ct = (this.headers && this.headers.get('content-type')) || (this[INTERNALS$2].body && this[INTERNALS$2].body.type) || ''; + const buf = await this.arrayBuffer(); + + return new Blob([buf], { + type: ct + }); + } + + /** + * Decode response as json + * + * @return Promise + */ + async json() { + const buffer = await consumeBody(this); + return JSON.parse(buffer.toString()); + } + + /** + * Decode response as text + * + * @return Promise + */ + async text() { + const buffer = await consumeBody(this); + return buffer.toString(); + } + + /** + * Decode response as buffer (non-spec api) + * + * @return Promise + */ + buffer() { + return consumeBody(this); + } +} + + +// In browsers, all properties are enumerable. +Object.defineProperties(Body.prototype, { + body: {enumerable: true}, + bodyUsed: {enumerable: true}, + arrayBuffer: {enumerable: true}, + blob: {enumerable: true}, + json: {enumerable: true}, + text: {enumerable: true}, +}); + +/** + * Consume and convert an entire Body to a Buffer. + * + * Ref: https://fetch.spec.whatwg.org/#concept-body-consume-body + * + * @return Promise + */ +async function consumeBody(data) { + if (data[INTERNALS$2].disturbed) { + throw new TypeError(`body used already for: ${data.url}`); + } + + data[INTERNALS$2].disturbed = true; + + if (data[INTERNALS$2].error) { + throw data[INTERNALS$2].error; + } + + const {body} = data; + + // Body is null + if (body === null) { + return Buffer.alloc(0); + } + + /* c8 ignore next 3 */ + if (!(body instanceof Stream)) { + return Buffer.alloc(0); + } + + // Body is stream + // get ready to actually consume the body + const accum = []; + let accumBytes = 0; + + try { + for await (const chunk of body) { + if (data.size > 0 && accumBytes + chunk.length > data.size) { + const error = new FetchError(`content size at ${data.url} over limit: ${data.size}`, 'max-size'); + body.destroy(error); + throw error; + } + + accumBytes += chunk.length; + accum.push(chunk); + } + } catch (error) { + const error_ = error instanceof FetchBaseError ? error : new FetchError(`Invalid response body while trying to fetch ${data.url}: ${error.message}`, 'system', error); + throw error_; + } + + if (body.readableEnded === true || body._readableState.ended === true) { + try { + if (accum.every(c => typeof c === 'string')) { + return Buffer.from(accum.join('')); + } + + return Buffer.concat(accum, accumBytes); + } catch (error) { + throw new FetchError(`Could not create Buffer from response body for ${data.url}: ${error.message}`, 'system', error); + } + } else { + throw new FetchError(`Premature close of server response while trying to fetch ${data.url}`); + } +} + +/** + * Clone body given Res/Req instance + * + * @param Mixed instance Response or Request instance + * @param String highWaterMark highWaterMark for both PassThrough body streams + * @return Mixed + */ +const clone = (instance, highWaterMark) => { + let p1; + let p2; + let {body} = instance[INTERNALS$2]; + + // Don't allow cloning a used body + if (instance.bodyUsed) { + throw new Error('cannot clone body after it is used'); + } + + // Check that body is a stream and not form-data object + // note: we can't clone the form-data object without having it as a dependency + if ((body instanceof Stream) && (typeof body.getBoundary !== 'function')) { + // Tee instance body + p1 = new PassThrough({highWaterMark}); + p2 = new PassThrough({highWaterMark}); + body.pipe(p1); + body.pipe(p2); + // Set instance body to teed body and return the other teed body + instance[INTERNALS$2].stream = p1; + body = p2; + } + + return body; +}; + +const getNonSpecFormDataBoundary = deprecate( + body => body.getBoundary(), + 'form-data doesn\'t follow the spec and requires special treatment. Use alternative package', + 'https://github.com/node-fetch/node-fetch/issues/1167' +); + +/** + * Performs the operation "extract a `Content-Type` value from |object|" as + * specified in the specification: + * https://fetch.spec.whatwg.org/#concept-bodyinit-extract + * + * This function assumes that instance.body is present. + * + * @param {any} body Any options.body input + * @returns {string | null} + */ +const extractContentType = (body, request) => { + // Body is null or undefined + if (body === null) { + return null; + } + + // Body is string + if (typeof body === 'string') { + return 'text/plain;charset=UTF-8'; + } + + // Body is a URLSearchParams + if (isURLSearchParameters(body)) { + return 'application/x-www-form-urlencoded;charset=UTF-8'; + } + + // Body is blob + if (isBlob(body)) { + return body.type || null; + } + + // Body is a Buffer (Buffer, ArrayBuffer or ArrayBufferView) + if (Buffer.isBuffer(body) || types.isAnyArrayBuffer(body) || ArrayBuffer.isView(body)) { + return null; + } + + if (body instanceof FormData) { + return `multipart/form-data; boundary=${request[INTERNALS$2].boundary}`; + } + + // Detect form data input from form-data module + if (body && typeof body.getBoundary === 'function') { + return `multipart/form-data;boundary=${getNonSpecFormDataBoundary(body)}`; + } + + // Body is stream - can't really do much about this + if (body instanceof Stream) { + return null; + } + + // Body constructor defaults other things to string + return 'text/plain;charset=UTF-8'; +}; + +/** + * The Fetch Standard treats this as if "total bytes" is a property on the body. + * For us, we have to explicitly get it with a function. + * + * ref: https://fetch.spec.whatwg.org/#concept-body-total-bytes + * + * @param {any} obj.body Body object from the Body instance. + * @returns {number | null} + */ +const getTotalBytes = request => { + const {body} = request[INTERNALS$2]; + + // Body is null or undefined + if (body === null) { + return 0; + } + + // Body is Blob + if (isBlob(body)) { + return body.size; + } + + // Body is Buffer + if (Buffer.isBuffer(body)) { + return body.length; + } + + // Detect form data input from form-data module + if (body && typeof body.getLengthSync === 'function') { + return body.hasKnownLength && body.hasKnownLength() ? body.getLengthSync() : null; + } + + // Body is stream + return null; +}; + +/** + * Write a Body to a Node.js WritableStream (e.g. http.Request) object. + * + * @param {Stream.Writable} dest The stream to write to. + * @param obj.body Body object from the Body instance. + * @returns {Promise<void>} + */ +const writeToStream = async (dest, {body}) => { + if (body === null) { + // Body is null + dest.end(); + } else { + // Body is stream + await pipeline(body, dest); + } +}; + +/** + * Headers.js + * + * Headers class offers convenient helpers + */ + +/* c8 ignore next 9 */ +const validateHeaderName = typeof http.validateHeaderName === 'function' ? + http.validateHeaderName : + name => { + if (!/^[\^`\-\w!#$%&'*+.|~]+$/.test(name)) { + const error = new TypeError(`Header name must be a valid HTTP token [${name}]`); + Object.defineProperty(error, 'code', {value: 'ERR_INVALID_HTTP_TOKEN'}); + throw error; + } + }; + +/* c8 ignore next 9 */ +const validateHeaderValue = typeof http.validateHeaderValue === 'function' ? + http.validateHeaderValue : + (name, value) => { + if (/[^\t\u0020-\u007E\u0080-\u00FF]/.test(value)) { + const error = new TypeError(`Invalid character in header content ["${name}"]`); + Object.defineProperty(error, 'code', {value: 'ERR_INVALID_CHAR'}); + throw error; + } + }; + +/** + * @typedef {Headers | Record<string, string> | Iterable<readonly [string, string]> | Iterable<Iterable<string>>} HeadersInit + */ + +/** + * This Fetch API interface allows you to perform various actions on HTTP request and response headers. + * These actions include retrieving, setting, adding to, and removing. + * A Headers object has an associated header list, which is initially empty and consists of zero or more name and value pairs. + * You can add to this using methods like append() (see Examples.) + * In all methods of this interface, header names are matched by case-insensitive byte sequence. + * + */ +class Headers extends URLSearchParams { + /** + * Headers class + * + * @constructor + * @param {HeadersInit} [init] - Response headers + */ + constructor(init) { + // Validate and normalize init object in [name, value(s)][] + /** @type {string[][]} */ + let result = []; + if (init instanceof Headers) { + const raw = init.raw(); + for (const [name, values] of Object.entries(raw)) { + result.push(...values.map(value => [name, value])); + } + } else if (init == null) ; else if (typeof init === 'object' && !types.isBoxedPrimitive(init)) { + const method = init[Symbol.iterator]; + // eslint-disable-next-line no-eq-null, eqeqeq + if (method == null) { + // Record<ByteString, ByteString> + result.push(...Object.entries(init)); + } else { + if (typeof method !== 'function') { + throw new TypeError('Header pairs must be iterable'); + } + + // Sequence<sequence<ByteString>> + // Note: per spec we have to first exhaust the lists then process them + result = [...init] + .map(pair => { + if ( + typeof pair !== 'object' || types.isBoxedPrimitive(pair) + ) { + throw new TypeError('Each header pair must be an iterable object'); + } + + return [...pair]; + }).map(pair => { + if (pair.length !== 2) { + throw new TypeError('Each header pair must be a name/value tuple'); + } + + return [...pair]; + }); + } + } else { + throw new TypeError('Failed to construct \'Headers\': The provided value is not of type \'(sequence<sequence<ByteString>> or record<ByteString, ByteString>)'); + } + + // Validate and lowercase + result = + result.length > 0 ? + result.map(([name, value]) => { + validateHeaderName(name); + validateHeaderValue(name, String(value)); + return [String(name).toLowerCase(), String(value)]; + }) : + undefined; + + super(result); + + // Returning a Proxy that will lowercase key names, validate parameters and sort keys + // eslint-disable-next-line no-constructor-return + return new Proxy(this, { + get(target, p, receiver) { + switch (p) { + case 'append': + case 'set': + return (name, value) => { + validateHeaderName(name); + validateHeaderValue(name, String(value)); + return URLSearchParams.prototype[p].call( + target, + String(name).toLowerCase(), + String(value) + ); + }; + + case 'delete': + case 'has': + case 'getAll': + return name => { + validateHeaderName(name); + return URLSearchParams.prototype[p].call( + target, + String(name).toLowerCase() + ); + }; + + case 'keys': + return () => { + target.sort(); + return new Set(URLSearchParams.prototype.keys.call(target)).keys(); + }; + + default: + return Reflect.get(target, p, receiver); + } + } + }); + /* c8 ignore next */ + } + + get [Symbol.toStringTag]() { + return this.constructor.name; + } + + toString() { + return Object.prototype.toString.call(this); + } + + get(name) { + const values = this.getAll(name); + if (values.length === 0) { + return null; + } + + let value = values.join(', '); + if (/^content-encoding$/i.test(name)) { + value = value.toLowerCase(); + } + + return value; + } + + forEach(callback, thisArg = undefined) { + for (const name of this.keys()) { + Reflect.apply(callback, thisArg, [this.get(name), name, this]); + } + } + + * values() { + for (const name of this.keys()) { + yield this.get(name); + } + } + + /** + * @type {() => IterableIterator<[string, string]>} + */ + * entries() { + for (const name of this.keys()) { + yield [name, this.get(name)]; + } + } + + [Symbol.iterator]() { + return this.entries(); + } + + /** + * Node-fetch non-spec method + * returning all headers and their values as array + * @returns {Record<string, string[]>} + */ + raw() { + return [...this.keys()].reduce((result, key) => { + result[key] = this.getAll(key); + return result; + }, {}); + } + + /** + * For better console.log(headers) and also to convert Headers into Node.js Request compatible format + */ + [Symbol.for('nodejs.util.inspect.custom')]() { + return [...this.keys()].reduce((result, key) => { + const values = this.getAll(key); + // Http.request() only supports string as Host header. + // This hack makes specifying custom Host header possible. + if (key === 'host') { + result[key] = values[0]; + } else { + result[key] = values.length > 1 ? values : values[0]; + } + + return result; + }, {}); + } +} + +/** + * Re-shaping object for Web IDL tests + * Only need to do it for overridden methods + */ +Object.defineProperties( + Headers.prototype, + ['get', 'entries', 'forEach', 'values'].reduce((result, property) => { + result[property] = {enumerable: true}; + return result; + }, {}) +); + +/** + * Create a Headers object from an http.IncomingMessage.rawHeaders, ignoring those that do + * not conform to HTTP grammar productions. + * @param {import('http').IncomingMessage['rawHeaders']} headers + */ +function fromRawHeaders(headers = []) { + return new Headers( + headers + // Split into pairs + .reduce((result, value, index, array) => { + if (index % 2 === 0) { + result.push(array.slice(index, index + 2)); + } + + return result; + }, []) + .filter(([name, value]) => { + try { + validateHeaderName(name); + validateHeaderValue(name, String(value)); + return true; + } catch { + return false; + } + }) + + ); +} + +const redirectStatus = new Set([301, 302, 303, 307, 308]); + +/** + * Redirect code matching + * + * @param {number} code - Status code + * @return {boolean} + */ +const isRedirect = code => { + return redirectStatus.has(code); +}; + +/** + * Response.js + * + * Response class provides content decoding + */ + +const INTERNALS$1 = Symbol('Response internals'); + +/** + * Response class + * + * Ref: https://fetch.spec.whatwg.org/#response-class + * + * @param Stream body Readable stream + * @param Object opts Response options + * @return Void + */ +class Response extends Body { + constructor(body = null, options = {}) { + super(body, options); + + // eslint-disable-next-line no-eq-null, eqeqeq, no-negated-condition + const status = options.status != null ? options.status : 200; + + const headers = new Headers(options.headers); + + if (body !== null && !headers.has('Content-Type')) { + const contentType = extractContentType(body, this); + if (contentType) { + headers.append('Content-Type', contentType); + } + } + + this[INTERNALS$1] = { + type: 'default', + url: options.url, + status, + statusText: options.statusText || '', + headers, + counter: options.counter, + highWaterMark: options.highWaterMark + }; + } + + get type() { + return this[INTERNALS$1].type; + } + + get url() { + return this[INTERNALS$1].url || ''; + } + + get status() { + return this[INTERNALS$1].status; + } + + /** + * Convenience property representing if the request ended normally + */ + get ok() { + return this[INTERNALS$1].status >= 200 && this[INTERNALS$1].status < 300; + } + + get redirected() { + return this[INTERNALS$1].counter > 0; + } + + get statusText() { + return this[INTERNALS$1].statusText; + } + + get headers() { + return this[INTERNALS$1].headers; + } + + get highWaterMark() { + return this[INTERNALS$1].highWaterMark; + } + + /** + * Clone this response + * + * @return Response + */ + clone() { + return new Response(clone(this, this.highWaterMark), { + type: this.type, + url: this.url, + status: this.status, + statusText: this.statusText, + headers: this.headers, + ok: this.ok, + redirected: this.redirected, + size: this.size, + highWaterMark: this.highWaterMark + }); + } + + /** + * @param {string} url The URL that the new response is to originate from. + * @param {number} status An optional status code for the response (e.g., 302.) + * @returns {Response} A Response object. + */ + static redirect(url, status = 302) { + if (!isRedirect(status)) { + throw new RangeError('Failed to execute "redirect" on "response": Invalid status code'); + } + + return new Response(null, { + headers: { + location: new URL(url).toString() + }, + status + }); + } + + static error() { + const response = new Response(null, {status: 0, statusText: ''}); + response[INTERNALS$1].type = 'error'; + return response; + } + + get [Symbol.toStringTag]() { + return 'Response'; + } +} + +Object.defineProperties(Response.prototype, { + type: {enumerable: true}, + url: {enumerable: true}, + status: {enumerable: true}, + ok: {enumerable: true}, + redirected: {enumerable: true}, + statusText: {enumerable: true}, + headers: {enumerable: true}, + clone: {enumerable: true} +}); + +const getSearch = parsedURL => { + if (parsedURL.search) { + return parsedURL.search; + } + + const lastOffset = parsedURL.href.length - 1; + const hash = parsedURL.hash || (parsedURL.href[lastOffset] === '#' ? '#' : ''); + return parsedURL.href[lastOffset - hash.length] === '?' ? '?' : ''; +}; + +/** + * @external URL + * @see {@link https://developer.mozilla.org/en-US/docs/Web/API/URL|URL} + */ + +/** + * @module utils/referrer + * @private + */ + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#strip-url|Referrer Policy §8.4. Strip url for use as a referrer} + * @param {string} URL + * @param {boolean} [originOnly=false] + */ +function stripURLForUseAsAReferrer(url, originOnly = false) { + // 1. If url is null, return no referrer. + if (url == null) { // eslint-disable-line no-eq-null, eqeqeq + return 'no-referrer'; + } + + url = new URL(url); + + // 2. If url's scheme is a local scheme, then return no referrer. + if (/^(about|blob|data):$/.test(url.protocol)) { + return 'no-referrer'; + } + + // 3. Set url's username to the empty string. + url.username = ''; + + // 4. Set url's password to null. + // Note: `null` appears to be a mistake as this actually results in the password being `"null"`. + url.password = ''; + + // 5. Set url's fragment to null. + // Note: `null` appears to be a mistake as this actually results in the fragment being `"#null"`. + url.hash = ''; + + // 6. If the origin-only flag is true, then: + if (originOnly) { + // 6.1. Set url's path to null. + // Note: `null` appears to be a mistake as this actually results in the path being `"/null"`. + url.pathname = ''; + + // 6.2. Set url's query to null. + // Note: `null` appears to be a mistake as this actually results in the query being `"?null"`. + url.search = ''; + } + + // 7. Return url. + return url; +} + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#enumdef-referrerpolicy|enum ReferrerPolicy} + */ +const ReferrerPolicy = new Set([ + '', + 'no-referrer', + 'no-referrer-when-downgrade', + 'same-origin', + 'origin', + 'strict-origin', + 'origin-when-cross-origin', + 'strict-origin-when-cross-origin', + 'unsafe-url' +]); + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#default-referrer-policy|default referrer policy} + */ +const DEFAULT_REFERRER_POLICY = 'strict-origin-when-cross-origin'; + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#referrer-policies|Referrer Policy §3. Referrer Policies} + * @param {string} referrerPolicy + * @returns {string} referrerPolicy + */ +function validateReferrerPolicy(referrerPolicy) { + if (!ReferrerPolicy.has(referrerPolicy)) { + throw new TypeError(`Invalid referrerPolicy: ${referrerPolicy}`); + } + + return referrerPolicy; +} + +/** + * @see {@link https://w3c.github.io/webappsec-secure-contexts/#is-origin-trustworthy|Referrer Policy §3.2. Is origin potentially trustworthy?} + * @param {external:URL} url + * @returns `true`: "Potentially Trustworthy", `false`: "Not Trustworthy" + */ +function isOriginPotentiallyTrustworthy(url) { + // 1. If origin is an opaque origin, return "Not Trustworthy". + // Not applicable + + // 2. Assert: origin is a tuple origin. + // Not for implementations + + // 3. If origin's scheme is either "https" or "wss", return "Potentially Trustworthy". + if (/^(http|ws)s:$/.test(url.protocol)) { + return true; + } + + // 4. If origin's host component matches one of the CIDR notations 127.0.0.0/8 or ::1/128 [RFC4632], return "Potentially Trustworthy". + const hostIp = url.host.replace(/(^\[)|(]$)/g, ''); + const hostIPVersion = isIP(hostIp); + + if (hostIPVersion === 4 && /^127\./.test(hostIp)) { + return true; + } + + if (hostIPVersion === 6 && /^(((0+:){7})|(::(0+:){0,6}))0*1$/.test(hostIp)) { + return true; + } + + // 5. If origin's host component is "localhost" or falls within ".localhost", and the user agent conforms to the name resolution rules in [let-localhost-be-localhost], return "Potentially Trustworthy". + // We are returning FALSE here because we cannot ensure conformance to + // let-localhost-be-loalhost (https://tools.ietf.org/html/draft-west-let-localhost-be-localhost) + if (/^(.+\.)*localhost$/.test(url.host)) { + return false; + } + + // 6. If origin's scheme component is file, return "Potentially Trustworthy". + if (url.protocol === 'file:') { + return true; + } + + // 7. If origin's scheme component is one which the user agent considers to be authenticated, return "Potentially Trustworthy". + // Not supported + + // 8. If origin has been configured as a trustworthy origin, return "Potentially Trustworthy". + // Not supported + + // 9. Return "Not Trustworthy". + return false; +} + +/** + * @see {@link https://w3c.github.io/webappsec-secure-contexts/#is-url-trustworthy|Referrer Policy §3.3. Is url potentially trustworthy?} + * @param {external:URL} url + * @returns `true`: "Potentially Trustworthy", `false`: "Not Trustworthy" + */ +function isUrlPotentiallyTrustworthy(url) { + // 1. If url is "about:blank" or "about:srcdoc", return "Potentially Trustworthy". + if (/^about:(blank|srcdoc)$/.test(url)) { + return true; + } + + // 2. If url's scheme is "data", return "Potentially Trustworthy". + if (url.protocol === 'data:') { + return true; + } + + // Note: The origin of blob: and filesystem: URLs is the origin of the context in which they were + // created. Therefore, blobs created in a trustworthy origin will themselves be potentially + // trustworthy. + if (/^(blob|filesystem):$/.test(url.protocol)) { + return true; + } + + // 3. Return the result of executing §3.2 Is origin potentially trustworthy? on url's origin. + return isOriginPotentiallyTrustworthy(url); +} + +/** + * Modifies the referrerURL to enforce any extra security policy considerations. + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#determine-requests-referrer|Referrer Policy §8.3. Determine request's Referrer}, step 7 + * @callback module:utils/referrer~referrerURLCallback + * @param {external:URL} referrerURL + * @returns {external:URL} modified referrerURL + */ + +/** + * Modifies the referrerOrigin to enforce any extra security policy considerations. + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#determine-requests-referrer|Referrer Policy §8.3. Determine request's Referrer}, step 7 + * @callback module:utils/referrer~referrerOriginCallback + * @param {external:URL} referrerOrigin + * @returns {external:URL} modified referrerOrigin + */ + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#determine-requests-referrer|Referrer Policy §8.3. Determine request's Referrer} + * @param {Request} request + * @param {object} o + * @param {module:utils/referrer~referrerURLCallback} o.referrerURLCallback + * @param {module:utils/referrer~referrerOriginCallback} o.referrerOriginCallback + * @returns {external:URL} Request's referrer + */ +function determineRequestsReferrer(request, {referrerURLCallback, referrerOriginCallback} = {}) { + // There are 2 notes in the specification about invalid pre-conditions. We return null, here, for + // these cases: + // > Note: If request's referrer is "no-referrer", Fetch will not call into this algorithm. + // > Note: If request's referrer policy is the empty string, Fetch will not call into this + // > algorithm. + if (request.referrer === 'no-referrer' || request.referrerPolicy === '') { + return null; + } + + // 1. Let policy be request's associated referrer policy. + const policy = request.referrerPolicy; + + // 2. Let environment be request's client. + // not applicable to node.js + + // 3. Switch on request's referrer: + if (request.referrer === 'about:client') { + return 'no-referrer'; + } + + // "a URL": Let referrerSource be request's referrer. + const referrerSource = request.referrer; + + // 4. Let request's referrerURL be the result of stripping referrerSource for use as a referrer. + let referrerURL = stripURLForUseAsAReferrer(referrerSource); + + // 5. Let referrerOrigin be the result of stripping referrerSource for use as a referrer, with the + // origin-only flag set to true. + let referrerOrigin = stripURLForUseAsAReferrer(referrerSource, true); + + // 6. If the result of serializing referrerURL is a string whose length is greater than 4096, set + // referrerURL to referrerOrigin. + if (referrerURL.toString().length > 4096) { + referrerURL = referrerOrigin; + } + + // 7. The user agent MAY alter referrerURL or referrerOrigin at this point to enforce arbitrary + // policy considerations in the interests of minimizing data leakage. For example, the user + // agent could strip the URL down to an origin, modify its host, replace it with an empty + // string, etc. + if (referrerURLCallback) { + referrerURL = referrerURLCallback(referrerURL); + } + + if (referrerOriginCallback) { + referrerOrigin = referrerOriginCallback(referrerOrigin); + } + + // 8.Execute the statements corresponding to the value of policy: + const currentURL = new URL(request.url); + + switch (policy) { + case 'no-referrer': + return 'no-referrer'; + + case 'origin': + return referrerOrigin; + + case 'unsafe-url': + return referrerURL; + + case 'strict-origin': + // 1. If referrerURL is a potentially trustworthy URL and request's current URL is not a + // potentially trustworthy URL, then return no referrer. + if (isUrlPotentiallyTrustworthy(referrerURL) && !isUrlPotentiallyTrustworthy(currentURL)) { + return 'no-referrer'; + } + + // 2. Return referrerOrigin. + return referrerOrigin.toString(); + + case 'strict-origin-when-cross-origin': + // 1. If the origin of referrerURL and the origin of request's current URL are the same, then + // return referrerURL. + if (referrerURL.origin === currentURL.origin) { + return referrerURL; + } + + // 2. If referrerURL is a potentially trustworthy URL and request's current URL is not a + // potentially trustworthy URL, then return no referrer. + if (isUrlPotentiallyTrustworthy(referrerURL) && !isUrlPotentiallyTrustworthy(currentURL)) { + return 'no-referrer'; + } + + // 3. Return referrerOrigin. + return referrerOrigin; + + case 'same-origin': + // 1. If the origin of referrerURL and the origin of request's current URL are the same, then + // return referrerURL. + if (referrerURL.origin === currentURL.origin) { + return referrerURL; + } + + // 2. Return no referrer. + return 'no-referrer'; + + case 'origin-when-cross-origin': + // 1. If the origin of referrerURL and the origin of request's current URL are the same, then + // return referrerURL. + if (referrerURL.origin === currentURL.origin) { + return referrerURL; + } + + // Return referrerOrigin. + return referrerOrigin; + + case 'no-referrer-when-downgrade': + // 1. If referrerURL is a potentially trustworthy URL and request's current URL is not a + // potentially trustworthy URL, then return no referrer. + if (isUrlPotentiallyTrustworthy(referrerURL) && !isUrlPotentiallyTrustworthy(currentURL)) { + return 'no-referrer'; + } + + // 2. Return referrerURL. + return referrerURL; + + default: + throw new TypeError(`Invalid referrerPolicy: ${policy}`); + } +} + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#parse-referrer-policy-from-header|Referrer Policy §8.1. Parse a referrer policy from a Referrer-Policy header} + * @param {Headers} headers Response headers + * @returns {string} policy + */ +function parseReferrerPolicyFromHeader(headers) { + // 1. Let policy-tokens be the result of extracting header list values given `Referrer-Policy` + // and response’s header list. + const policyTokens = (headers.get('referrer-policy') || '').split(/[,\s]+/); + + // 2. Let policy be the empty string. + let policy = ''; + + // 3. For each token in policy-tokens, if token is a referrer policy and token is not the empty + // string, then set policy to token. + // Note: This algorithm loops over multiple policy values to allow deployment of new policy + // values with fallbacks for older user agents, as described in § 11.1 Unknown Policy Values. + for (const token of policyTokens) { + if (token && ReferrerPolicy.has(token)) { + policy = token; + } + } + + // 4. Return policy. + return policy; +} + +/** + * Request.js + * + * Request class contains server only options + * + * All spec algorithm step numbers are based on https://fetch.spec.whatwg.org/commit-snapshots/ae716822cb3a61843226cd090eefc6589446c1d2/. + */ + +const INTERNALS = Symbol('Request internals'); + +/** + * Check if `obj` is an instance of Request. + * + * @param {*} object + * @return {boolean} + */ +const isRequest = object => { + return ( + typeof object === 'object' && + typeof object[INTERNALS] === 'object' + ); +}; + +const doBadDataWarn = deprecate(() => {}, + '.data is not a valid RequestInit property, use .body instead', + 'https://github.com/node-fetch/node-fetch/issues/1000 (request)'); + +/** + * Request class + * + * Ref: https://fetch.spec.whatwg.org/#request-class + * + * @param Mixed input Url or Request instance + * @param Object init Custom options + * @return Void + */ +class Request extends Body { + constructor(input, init = {}) { + let parsedURL; + + // Normalize input and force URL to be encoded as UTF-8 (https://github.com/node-fetch/node-fetch/issues/245) + if (isRequest(input)) { + parsedURL = new URL(input.url); + } else { + parsedURL = new URL(input); + input = {}; + } + + if (parsedURL.username !== '' || parsedURL.password !== '') { + throw new TypeError(`${parsedURL} is an url with embedded credentials.`); + } + + let method = init.method || input.method || 'GET'; + method = method.toUpperCase(); + + if ('data' in init) { + doBadDataWarn(); + } + + // eslint-disable-next-line no-eq-null, eqeqeq + if ((init.body != null || (isRequest(input) && input.body !== null)) && + (method === 'GET' || method === 'HEAD')) { + throw new TypeError('Request with GET/HEAD method cannot have body'); + } + + const inputBody = init.body ? + init.body : + (isRequest(input) && input.body !== null ? + clone(input) : + null); + + super(inputBody, { + size: init.size || input.size || 0 + }); + + const headers = new Headers(init.headers || input.headers || {}); + + if (inputBody !== null && !headers.has('Content-Type')) { + const contentType = extractContentType(inputBody, this); + if (contentType) { + headers.set('Content-Type', contentType); + } + } + + let signal = isRequest(input) ? + input.signal : + null; + if ('signal' in init) { + signal = init.signal; + } + + // eslint-disable-next-line no-eq-null, eqeqeq + if (signal != null && !isAbortSignal(signal)) { + throw new TypeError('Expected signal to be an instanceof AbortSignal or EventTarget'); + } + + // §5.4, Request constructor steps, step 15.1 + // eslint-disable-next-line no-eq-null, eqeqeq + let referrer = init.referrer == null ? input.referrer : init.referrer; + if (referrer === '') { + // §5.4, Request constructor steps, step 15.2 + referrer = 'no-referrer'; + } else if (referrer) { + // §5.4, Request constructor steps, step 15.3.1, 15.3.2 + const parsedReferrer = new URL(referrer); + // §5.4, Request constructor steps, step 15.3.3, 15.3.4 + referrer = /^about:(\/\/)?client$/.test(parsedReferrer) ? 'client' : parsedReferrer; + } else { + referrer = undefined; + } + + this[INTERNALS] = { + method, + redirect: init.redirect || input.redirect || 'follow', + headers, + parsedURL, + signal, + referrer + }; + + // Node-fetch-only options + this.follow = init.follow === undefined ? (input.follow === undefined ? 20 : input.follow) : init.follow; + this.compress = init.compress === undefined ? (input.compress === undefined ? true : input.compress) : init.compress; + this.counter = init.counter || input.counter || 0; + this.agent = init.agent || input.agent; + this.highWaterMark = init.highWaterMark || input.highWaterMark || 16384; + this.insecureHTTPParser = init.insecureHTTPParser || input.insecureHTTPParser || false; + + // §5.4, Request constructor steps, step 16. + // Default is empty string per https://fetch.spec.whatwg.org/#concept-request-referrer-policy + this.referrerPolicy = init.referrerPolicy || input.referrerPolicy || ''; + } + + /** @returns {string} */ + get method() { + return this[INTERNALS].method; + } + + /** @returns {string} */ + get url() { + return format$1(this[INTERNALS].parsedURL); + } + + /** @returns {Headers} */ + get headers() { + return this[INTERNALS].headers; + } + + get redirect() { + return this[INTERNALS].redirect; + } + + /** @returns {AbortSignal} */ + get signal() { + return this[INTERNALS].signal; + } + + // https://fetch.spec.whatwg.org/#dom-request-referrer + get referrer() { + if (this[INTERNALS].referrer === 'no-referrer') { + return ''; + } + + if (this[INTERNALS].referrer === 'client') { + return 'about:client'; + } + + if (this[INTERNALS].referrer) { + return this[INTERNALS].referrer.toString(); + } + + return undefined; + } + + get referrerPolicy() { + return this[INTERNALS].referrerPolicy; + } + + set referrerPolicy(referrerPolicy) { + this[INTERNALS].referrerPolicy = validateReferrerPolicy(referrerPolicy); + } + + /** + * Clone this request + * + * @return Request + */ + clone() { + return new Request(this); + } + + get [Symbol.toStringTag]() { + return 'Request'; + } +} + +Object.defineProperties(Request.prototype, { + method: {enumerable: true}, + url: {enumerable: true}, + headers: {enumerable: true}, + redirect: {enumerable: true}, + clone: {enumerable: true}, + signal: {enumerable: true}, + referrer: {enumerable: true}, + referrerPolicy: {enumerable: true} +}); + +/** + * Convert a Request to Node.js http request options. + * + * @param {Request} request - A Request instance + * @return The options object to be passed to http.request + */ +const getNodeRequestOptions = request => { + const {parsedURL} = request[INTERNALS]; + const headers = new Headers(request[INTERNALS].headers); + + // Fetch step 1.3 + if (!headers.has('Accept')) { + headers.set('Accept', '*/*'); + } + + // HTTP-network-or-cache fetch steps 2.4-2.7 + let contentLengthValue = null; + if (request.body === null && /^(post|put)$/i.test(request.method)) { + contentLengthValue = '0'; + } + + if (request.body !== null) { + const totalBytes = getTotalBytes(request); + // Set Content-Length if totalBytes is a number (that is not NaN) + if (typeof totalBytes === 'number' && !Number.isNaN(totalBytes)) { + contentLengthValue = String(totalBytes); + } + } + + if (contentLengthValue) { + headers.set('Content-Length', contentLengthValue); + } + + // 4.1. Main fetch, step 2.6 + // > If request's referrer policy is the empty string, then set request's referrer policy to the + // > default referrer policy. + if (request.referrerPolicy === '') { + request.referrerPolicy = DEFAULT_REFERRER_POLICY; + } + + // 4.1. Main fetch, step 2.7 + // > If request's referrer is not "no-referrer", set request's referrer to the result of invoking + // > determine request's referrer. + if (request.referrer && request.referrer !== 'no-referrer') { + request[INTERNALS].referrer = determineRequestsReferrer(request); + } else { + request[INTERNALS].referrer = 'no-referrer'; + } + + // 4.5. HTTP-network-or-cache fetch, step 6.9 + // > If httpRequest's referrer is a URL, then append `Referer`/httpRequest's referrer, serialized + // > and isomorphic encoded, to httpRequest's header list. + if (request[INTERNALS].referrer instanceof URL) { + headers.set('Referer', request.referrer); + } + + // HTTP-network-or-cache fetch step 2.11 + if (!headers.has('User-Agent')) { + headers.set('User-Agent', 'node-fetch'); + } + + // HTTP-network-or-cache fetch step 2.15 + if (request.compress && !headers.has('Accept-Encoding')) { + headers.set('Accept-Encoding', 'gzip,deflate,br'); + } + + let {agent} = request; + if (typeof agent === 'function') { + agent = agent(parsedURL); + } + + if (!headers.has('Connection') && !agent) { + headers.set('Connection', 'close'); + } + + // HTTP-network fetch step 4.2 + // chunked encoding is handled by Node.js + + const search = getSearch(parsedURL); + + // Pass the full URL directly to request(), but overwrite the following + // options: + const options = { + // Overwrite search to retain trailing ? (issue #776) + path: parsedURL.pathname + search, + // The following options are not expressed in the URL + method: request.method, + headers: headers[Symbol.for('nodejs.util.inspect.custom')](), + insecureHTTPParser: request.insecureHTTPParser, + agent + }; + + return { + /** @type {URL} */ + parsedURL, + options + }; +}; + +/** + * AbortError interface for cancelled requests + */ +class AbortError extends FetchBaseError { + constructor(message, type = 'aborted') { + super(message, type); + } +} + +/** + * Index.js + * + * a request API compatible with window.fetch + * + * All spec algorithm step numbers are based on https://fetch.spec.whatwg.org/commit-snapshots/ae716822cb3a61843226cd090eefc6589446c1d2/. + */ + +const supportedSchemas = new Set(['data:', 'http:', 'https:']); + +/** + * Fetch function + * + * @param {string | URL | import('./request').default} url - Absolute url or Request instance + * @param {*} [options_] - Fetch options + * @return {Promise<import('./response').default>} + */ +async function fetch$1(url, options_) { + return new Promise((resolve, reject) => { + // Build request object + const request = new Request(url, options_); + const {parsedURL, options} = getNodeRequestOptions(request); + if (!supportedSchemas.has(parsedURL.protocol)) { + throw new TypeError(`node-fetch cannot load ${url}. URL scheme "${parsedURL.protocol.replace(/:$/, '')}" is not supported.`); + } + + if (parsedURL.protocol === 'data:') { + const data = dataUriToBuffer(request.url); + const response = new Response(data, {headers: {'Content-Type': data.typeFull}}); + resolve(response); + return; + } + + // Wrap http.request into fetch + const send = (parsedURL.protocol === 'https:' ? https : http).request; + const {signal} = request; + let response = null; + + const abort = () => { + const error = new AbortError('The operation was aborted.'); + reject(error); + if (request.body && request.body instanceof Stream.Readable) { + request.body.destroy(error); + } + + if (!response || !response.body) { + return; + } + + response.body.emit('error', error); + }; + + if (signal && signal.aborted) { + abort(); + return; + } + + const abortAndFinalize = () => { + abort(); + finalize(); + }; + + // Send request + const request_ = send(parsedURL.toString(), options); + + if (signal) { + signal.addEventListener('abort', abortAndFinalize); + } + + const finalize = () => { + request_.abort(); + if (signal) { + signal.removeEventListener('abort', abortAndFinalize); + } + }; + + request_.on('error', error => { + reject(new FetchError(`request to ${request.url} failed, reason: ${error.message}`, 'system', error)); + finalize(); + }); + + fixResponseChunkedTransferBadEnding(request_, error => { + response.body.destroy(error); + }); + + /* c8 ignore next 18 */ + if (process.version < 'v14') { + // Before Node.js 14, pipeline() does not fully support async iterators and does not always + // properly handle when the socket close/end events are out of order. + request_.on('socket', s => { + let endedWithEventsCount; + s.prependListener('end', () => { + endedWithEventsCount = s._eventsCount; + }); + s.prependListener('close', hadError => { + // if end happened before close but the socket didn't emit an error, do it now + if (response && endedWithEventsCount < s._eventsCount && !hadError) { + const error = new Error('Premature close'); + error.code = 'ERR_STREAM_PREMATURE_CLOSE'; + response.body.emit('error', error); + } + }); + }); + } + + request_.on('response', response_ => { + request_.setTimeout(0); + const headers = fromRawHeaders(response_.rawHeaders); + + // HTTP fetch step 5 + if (isRedirect(response_.statusCode)) { + // HTTP fetch step 5.2 + const location = headers.get('Location'); + + // HTTP fetch step 5.3 + let locationURL = null; + try { + locationURL = location === null ? null : new URL(location, request.url); + } catch { + // error here can only be invalid URL in Location: header + // do not throw when options.redirect == manual + // let the user extract the errorneous redirect URL + if (request.redirect !== 'manual') { + reject(new FetchError(`uri requested responds with an invalid redirect URL: ${location}`, 'invalid-redirect')); + finalize(); + return; + } + } + + // HTTP fetch step 5.5 + switch (request.redirect) { + case 'error': + reject(new FetchError(`uri requested responds with a redirect, redirect mode is set to error: ${request.url}`, 'no-redirect')); + finalize(); + return; + case 'manual': + // Nothing to do + break; + case 'follow': { + // HTTP-redirect fetch step 2 + if (locationURL === null) { + break; + } + + // HTTP-redirect fetch step 5 + if (request.counter >= request.follow) { + reject(new FetchError(`maximum redirect reached at: ${request.url}`, 'max-redirect')); + finalize(); + return; + } + + // HTTP-redirect fetch step 6 (counter increment) + // Create a new Request object. + const requestOptions = { + headers: new Headers(request.headers), + follow: request.follow, + counter: request.counter + 1, + agent: request.agent, + compress: request.compress, + method: request.method, + body: clone(request), + signal: request.signal, + size: request.size, + referrer: request.referrer, + referrerPolicy: request.referrerPolicy + }; + + // when forwarding sensitive headers like "Authorization", + // "WWW-Authenticate", and "Cookie" to untrusted targets, + // headers will be ignored when following a redirect to a domain + // that is not a subdomain match or exact match of the initial domain. + // For example, a redirect from "foo.com" to either "foo.com" or "sub.foo.com" + // will forward the sensitive headers, but a redirect to "bar.com" will not. + if (!isDomainOrSubdomain(request.url, locationURL)) { + for (const name of ['authorization', 'www-authenticate', 'cookie', 'cookie2']) { + requestOptions.headers.delete(name); + } + } + + // HTTP-redirect fetch step 9 + if (response_.statusCode !== 303 && request.body && options_.body instanceof Stream.Readable) { + reject(new FetchError('Cannot follow redirect with body being a readable stream', 'unsupported-redirect')); + finalize(); + return; + } + + // HTTP-redirect fetch step 11 + if (response_.statusCode === 303 || ((response_.statusCode === 301 || response_.statusCode === 302) && request.method === 'POST')) { + requestOptions.method = 'GET'; + requestOptions.body = undefined; + requestOptions.headers.delete('content-length'); + } + + // HTTP-redirect fetch step 14 + const responseReferrerPolicy = parseReferrerPolicyFromHeader(headers); + if (responseReferrerPolicy) { + requestOptions.referrerPolicy = responseReferrerPolicy; + } + + // HTTP-redirect fetch step 15 + resolve(fetch$1(new Request(locationURL, requestOptions))); + finalize(); + return; + } + + default: + return reject(new TypeError(`Redirect option '${request.redirect}' is not a valid value of RequestRedirect`)); + } + } + + // Prepare response + if (signal) { + response_.once('end', () => { + signal.removeEventListener('abort', abortAndFinalize); + }); + } + + let body = pipeline$1(response_, new PassThrough(), error => { + if (error) { + reject(error); + } + }); + // see https://github.com/nodejs/node/pull/29376 + /* c8 ignore next 3 */ + if (process.version < 'v12.10') { + response_.on('aborted', abortAndFinalize); + } + + const responseOptions = { + url: request.url, + status: response_.statusCode, + statusText: response_.statusMessage, + headers, + size: request.size, + counter: request.counter, + highWaterMark: request.highWaterMark + }; + + // HTTP-network fetch step 12.1.1.3 + const codings = headers.get('Content-Encoding'); + + // HTTP-network fetch step 12.1.1.4: handle content codings + + // in following scenarios we ignore compression support + // 1. compression support is disabled + // 2. HEAD request + // 3. no Content-Encoding header + // 4. no content response (204) + // 5. content not modified response (304) + if (!request.compress || request.method === 'HEAD' || codings === null || response_.statusCode === 204 || response_.statusCode === 304) { + response = new Response(body, responseOptions); + resolve(response); + return; + } + + // For Node v6+ + // Be less strict when decoding compressed responses, since sometimes + // servers send slightly invalid responses that are still accepted + // by common browsers. + // Always using Z_SYNC_FLUSH is what cURL does. + const zlibOptions = { + flush: zlib.Z_SYNC_FLUSH, + finishFlush: zlib.Z_SYNC_FLUSH + }; + + // For gzip + if (codings === 'gzip' || codings === 'x-gzip') { + body = pipeline$1(body, zlib.createGunzip(zlibOptions), error => { + if (error) { + reject(error); + } + }); + response = new Response(body, responseOptions); + resolve(response); + return; + } + + // For deflate + if (codings === 'deflate' || codings === 'x-deflate') { + // Handle the infamous raw deflate response from old servers + // a hack for old IIS and Apache servers + const raw = pipeline$1(response_, new PassThrough(), error => { + if (error) { + reject(error); + } + }); + raw.once('data', chunk => { + // See http://stackoverflow.com/questions/37519828 + if ((chunk[0] & 0x0F) === 0x08) { + body = pipeline$1(body, zlib.createInflate(), error => { + if (error) { + reject(error); + } + }); + } else { + body = pipeline$1(body, zlib.createInflateRaw(), error => { + if (error) { + reject(error); + } + }); + } + + response = new Response(body, responseOptions); + resolve(response); + }); + raw.once('end', () => { + // Some old IIS servers return zero-length OK deflate responses, so + // 'data' is never emitted. See https://github.com/node-fetch/node-fetch/pull/903 + if (!response) { + response = new Response(body, responseOptions); + resolve(response); + } + }); + return; + } + + // For br + if (codings === 'br') { + body = pipeline$1(body, zlib.createBrotliDecompress(), error => { + if (error) { + reject(error); + } + }); + response = new Response(body, responseOptions); + resolve(response); + return; + } + + // Otherwise, use response as-is + response = new Response(body, responseOptions); + resolve(response); + }); + + // eslint-disable-next-line promise/prefer-await-to-then + writeToStream(request_, request).catch(reject); + }); +} + +function fixResponseChunkedTransferBadEnding(request, errorCallback) { + const LAST_CHUNK = Buffer.from('0\r\n\r\n'); + + let isChunkedTransfer = false; + let properLastChunkReceived = false; + let previousChunk; + + request.on('response', response => { + const {headers} = response; + isChunkedTransfer = headers['transfer-encoding'] === 'chunked' && !headers['content-length']; + }); + + request.on('socket', socket => { + const onSocketClose = () => { + if (isChunkedTransfer && !properLastChunkReceived) { + const error = new Error('Premature close'); + error.code = 'ERR_STREAM_PREMATURE_CLOSE'; + errorCallback(error); + } + }; + + socket.prependListener('close', onSocketClose); + + request.on('abort', () => { + socket.removeListener('close', onSocketClose); + }); + + socket.on('data', buf => { + properLastChunkReceived = Buffer.compare(buf.slice(-5), LAST_CHUNK) === 0; + + // Sometimes final 0-length chunk and end of message code are in separate packets + if (!properLastChunkReceived && previousChunk) { + properLastChunkReceived = ( + Buffer.compare(previousChunk.slice(-3), LAST_CHUNK.slice(0, 3)) === 0 && + Buffer.compare(buf.slice(-2), LAST_CHUNK.slice(3)) === 0 + ); + } + + previousChunk = buf; + }); + }); +} + +const fetch = { + fetch(resource, init) { + const resourceURL = new URL(__object_isPrototypeOf(Request.prototype, resource) + ? resource.url + : pathToPosix(resource), typeof Object(globalThis.process).cwd === 'function' ? 'file:' + pathToPosix(process.cwd()) + '/' : 'file:'); + if (resourceURL.protocol.toLowerCase() === 'file:') { + return import('node:fs').then(fs => { + try { + const stats = fs.statSync(resourceURL); + const body = fs.createReadStream(resourceURL); + return new Response(body, { + status: 200, + statusText: '', + headers: { + 'content-length': String(stats.size), + 'date': new Date().toUTCString(), + 'last-modified': new Date(stats.mtimeMs).toUTCString(), + } + }); + } + catch (error) { + const body = new Stream.Readable(); + body._read = () => { }; + body.push(null); + return new Response(body, { + status: 404, + statusText: '', + headers: { + 'date': new Date().toUTCString(), + } + }); + } + }); + } + else { + return fetch$1(resource, init); + } + } +}.fetch; + +function u(u,D){for(var t=0;t<D.length;t++){var F=D[t];F.enumerable=F.enumerable||!1,F.configurable=!0,"value"in F&&(F.writable=!0),Object.defineProperty(u,F.key,F);}}function D(D,t,F){return t&&u(D.prototype,t),F&&u(D,F),D}function t(u,D){(null==D||D>u.length)&&(D=u.length);for(var t=0,F=new Array(D);t<D;t++)F[t]=u[t];return F}function F$1(u,D){var F="undefined"!=typeof Symbol&&u[Symbol.iterator]||u["@@iterator"];if(F)return (F=F.call(u)).next.bind(F);if(Array.isArray(u)||(F=function(u,D){if(u){if("string"==typeof u)return t(u,D);var F=Object.prototype.toString.call(u).slice(8,-1);return "Object"===F&&u.constructor&&(F=u.constructor.name),"Map"===F||"Set"===F?Array.from(u):"Arguments"===F||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(F)?t(u,D):void 0}}(u))||D&&u&&"number"==typeof u.length){F&&(u=F);var e=0;return function(){return e>=u.length?{done:!0}:{done:!1,value:u[e++]}}}throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}var 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T(u){if(""===u)return u;var D=new URL("https://example.com");return D.hash=u,D.hash.substring(1,D.hash.length)}!function(u){u[u.INIT=0]="INIT",u[u.PROTOCOL=1]="PROTOCOL",u[u.AUTHORITY=2]="AUTHORITY",u[u.USERNAME=3]="USERNAME",u[u.PASSWORD=4]="PASSWORD",u[u.HOSTNAME=5]="HOSTNAME",u[u.PORT=6]="PORT",u[u.PATHNAME=7]="PATHNAME",u[u.SEARCH=8]="SEARCH",u[u.HASH=9]="HASH",u[u.DONE=10]="DONE";}(f$1||(f$1={}));var b=function(){function u(u){this.input=void 0,this.tokenList=[],this.internalResult={},this.tokenIndex=0,this.tokenIncrement=1,this.componentStart=0,this.state=f$1.INIT,this.groupDepth=0,this.hostnameIPv6BracketDepth=0,this.shouldTreatAsStandardURL=!1,this.input=u;}var t=u.prototype;return t.parse=function(){for(this.tokenList=E(this.input,!0);this.tokenIndex<this.tokenList.length;this.tokenIndex+=this.tokenIncrement){if(this.tokenIncrement=1,"END"===this.tokenList[this.tokenIndex].type){if(this.state===f$1.INIT){this.rewind(),this.isHashPrefix()?this.changeState(f$1.HASH,1):this.isSearchPrefix()?(this.changeState(f$1.SEARCH,1),this.internalResult.hash=""):(this.changeState(f$1.PATHNAME,0),this.internalResult.search="",this.internalResult.hash="");continue}if(this.state===f$1.AUTHORITY){this.rewindAndSetState(f$1.HOSTNAME);continue}this.changeState(f$1.DONE,0);break}if(this.groupDepth>0){if(!this.isGroupClose())continue;this.groupDepth-=1;}if(this.isGroupOpen())this.groupDepth+=1;else switch(this.state){case f$1.INIT:this.isProtocolSuffix()&&(this.internalResult.username="",this.internalResult.password="",this.internalResult.hostname="",this.internalResult.port="",this.internalResult.pathname="",this.internalResult.search="",this.internalResult.hash="",this.rewindAndSetState(f$1.PROTOCOL));break;case f$1.PROTOCOL:if(this.isProtocolSuffix()){this.computeShouldTreatAsStandardURL();var u=f$1.PATHNAME,D=1;this.shouldTreatAsStandardURL&&(this.internalResult.pathname="/"),this.nextIsAuthoritySlashes()?(u=f$1.AUTHORITY,D=3):this.shouldTreatAsStandardURL&&(u=f$1.AUTHORITY),this.changeState(u,D);}break;case f$1.AUTHORITY:this.isIdentityTerminator()?this.rewindAndSetState(f$1.USERNAME):(this.isPathnameStart()||this.isSearchPrefix()||this.isHashPrefix())&&this.rewindAndSetState(f$1.HOSTNAME);break;case f$1.USERNAME:this.isPasswordPrefix()?this.changeState(f$1.PASSWORD,1):this.isIdentityTerminator()&&this.changeState(f$1.HOSTNAME,1);break;case f$1.PASSWORD:this.isIdentityTerminator()&&this.changeState(f$1.HOSTNAME,1);break;case f$1.HOSTNAME:this.isIPv6Open()?this.hostnameIPv6BracketDepth+=1:this.isIPv6Close()&&(this.hostnameIPv6BracketDepth-=1),this.isPortPrefix()&&!this.hostnameIPv6BracketDepth?this.changeState(f$1.PORT,1):this.isPathnameStart()?this.changeState(f$1.PATHNAME,0):this.isSearchPrefix()?this.changeState(f$1.SEARCH,1):this.isHashPrefix()&&this.changeState(f$1.HASH,1);break;case f$1.PORT:this.isPathnameStart()?this.changeState(f$1.PATHNAME,0):this.isSearchPrefix()?this.changeState(f$1.SEARCH,1):this.isHashPrefix()&&this.changeState(f$1.HASH,1);break;case f$1.PATHNAME:this.isSearchPrefix()?this.changeState(f$1.SEARCH,1):this.isHashPrefix()&&this.changeState(f$1.HASH,1);break;case f$1.SEARCH:this.isHashPrefix()&&this.changeState(f$1.HASH,1);}}},t.changeState=function(u,D){switch(this.state){case f$1.INIT:break;case f$1.PROTOCOL:this.internalResult.protocol=this.makeComponentString();break;case f$1.AUTHORITY:break;case f$1.USERNAME:this.internalResult.username=this.makeComponentString();break;case f$1.PASSWORD:this.internalResult.password=this.makeComponentString();break;case f$1.HOSTNAME:this.internalResult.hostname=this.makeComponentString();break;case f$1.PORT:this.internalResult.port=this.makeComponentString();break;case f$1.PATHNAME:this.internalResult.pathname=this.makeComponentString();break;case f$1.SEARCH:this.internalResult.search=this.makeComponentString();break;case f$1.HASH:this.internalResult.hash=this.makeComponentString();}this.changeStateWithoutSettingComponent(u,D);},t.changeStateWithoutSettingComponent=function(u,D){this.state=u,this.componentStart=this.tokenIndex+D,this.tokenIndex+=D,this.tokenIncrement=0;},t.rewind=function(){this.tokenIndex=this.componentStart,this.tokenIncrement=0;},t.rewindAndSetState=function(u){this.rewind(),this.state=u;},t.safeToken=function(u){return u<0&&(u=this.tokenList.length-u),u<this.tokenList.length?this.tokenList[u]:this.tokenList[this.tokenList.length-1]},t.isNonSpecialPatternChar=function(u,D){var t=this.safeToken(u);return t.value===D&&("CHAR"===t.type||"ESCAPED_CHAR"===t.type||"INVALID_CHAR"===t.type)},t.isProtocolSuffix=function(){return this.isNonSpecialPatternChar(this.tokenIndex,":")},t.nextIsAuthoritySlashes=function(){return this.isNonSpecialPatternChar(this.tokenIndex+1,"/")&&this.isNonSpecialPatternChar(this.tokenIndex+2,"/")},t.isIdentityTerminator=function(){return this.isNonSpecialPatternChar(this.tokenIndex,"@")},t.isPasswordPrefix=function(){return this.isNonSpecialPatternChar(this.tokenIndex,":")},t.isPortPrefix=function(){return this.isNonSpecialPatternChar(this.tokenIndex,":")},t.isPathnameStart=function(){return this.isNonSpecialPatternChar(this.tokenIndex,"/")},t.isSearchPrefix=function(){if(this.isNonSpecialPatternChar(this.tokenIndex,"?"))return !0;if("?"!==this.tokenList[this.tokenIndex].value)return !1;var u=this.safeToken(this.tokenIndex-1);return "NAME"!==u.type&&"PATTERN"!==u.type&&"CLOSE"!==u.type&&"ASTERISK"!==u.type},t.isHashPrefix=function(){return this.isNonSpecialPatternChar(this.tokenIndex,"#")},t.isGroupOpen=function(){return "OPEN"==this.tokenList[this.tokenIndex].type},t.isGroupClose=function(){return "CLOSE"==this.tokenList[this.tokenIndex].type},t.isIPv6Open=function(){return this.isNonSpecialPatternChar(this.tokenIndex,"[")},t.isIPv6Close=function(){return this.isNonSpecialPatternChar(this.tokenIndex,"]")},t.makeComponentString=function(){var u=this.tokenList[this.tokenIndex],D=this.safeToken(this.componentStart).index;return this.input.substring(D,u.index)},t.computeShouldTreatAsStandardURL=function(){var u={};Object.assign(u,B),u.encodePart=g;var D=a(this.makeComponentString(),void 0,u);this.shouldTreatAsStandardURL=m(D);},D(u,[{key:"result",get:function(){return 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u=(t=u).endsWith(":")?t.substr(0,t.length-":".length):t,D||""===u?u:g(u)}(D.protocol,t)),"string"==typeof D.username&&(u.username=function(u,D){if(D||""===u)return u;var t=new URL("https://example.com");return t.username=u,t.username}(D.username,t)),"string"==typeof D.password&&(u.password=function(u,D){if(D||""===u)return u;var t=new URL("https://example.com");return t.password=u,t.password}(D.password,t)),"string"==typeof D.hostname&&(u.hostname=function(u,D){return D||""===u?u:c(u)?y(u):v(u)}(D.hostname,t)),"string"==typeof D.port&&(u.port=function(u,D,t){return d(D)===u&&(u=""),t||""===u?u:R(u)}(D.port,u.protocol,t)),"string"==typeof D.pathname){if(u.pathname=D.pathname,F&&!function(u,D){return !(!u.length||"/"!==u[0]&&(!D||u.length<2||"\\"!=u[0]&&"{"!=u[0]||"/"!=u[1]))}(u.pathname,t)){var e=F.pathname.lastIndexOf("/");e>=0&&(u.pathname=F.pathname.substring(0,e+1)+u.pathname);}u.pathname=function(u,D,t){if(t||""===u)return u;if(D&&!l.includes(D))return new URL(D+":"+u).pathname;var 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0,this.regexp={},this.keys={},this.component_pattern={};try{if("string"==typeof u){var t=new b(u);if(t.parse(),u=t.result,D){if("string"!=typeof D)throw new TypeError("'baseURL' parameter is not of type 'string'.");u.baseURL=D;}else if("string"!=typeof u.protocol)throw new TypeError("A base URL must be provided for a relative constructor string.")}else if(D)throw new TypeError("parameter 1 is not of type 'string'.");if(!u||"object"!=typeof u)throw new TypeError("parameter 1 is not of type 'string' and cannot convert to dictionary.");var e;this.pattern=H({pathname:"*",protocol:"*",username:"*",password:"*",hostname:"*",port:"*",search:"*",hash:"*"},u,!0),d(this.pattern.protocol)===this.pattern.port&&(this.pattern.port="");for(var C,A=F$1(I);!(C=A()).done;)if((e=C.value)in this.pattern){var E={},r=this.pattern[e];switch(this.keys[e]=[],e){case"protocol":Object.assign(E,B),E.encodePart=g;break;case"username":Object.assign(E,B),E.encodePart=x;break;case"password":Object.assign(E,B),E.encodePart=S$1;break;case"hostname":Object.assign(E,o),E.encodePart=c(r)?y:v;break;case"port":Object.assign(E,B),E.encodePart=R;break;case"pathname":m(this.regexp.protocol)?(Object.assign(E,h),E.encodePart=k):(Object.assign(E,B),E.encodePart=w);break;case"search":Object.assign(E,B),E.encodePart=P;break;case"hash":Object.assign(E,B),E.encodePart=T;}try{var i=n(r,E);this.regexp[e]=s$1(i,this.keys[e],E),this.component_pattern[e]=L(i,E);}catch(u){throw new TypeError("invalid "+e+" pattern '"+this.pattern[e]+"'.")}}}catch(u){throw new TypeError("Failed to construct 'URLPattern': "+u.message)}}var t=u.prototype;return t.test=function(u,D){void 0===u&&(u={});var t,F={pathname:"",protocol:"",username:"",password:"",hostname:"",port:"",search:"",hash:""};if("string"!=typeof u&&D)throw new TypeError("parameter 1 is not of type 'string'.");if(void 0===u)return !1;try{F=H(F,"object"==typeof u?u:O(u,D),!1);}catch(u){return !1}for(t in this.pattern)if(!this.regexp[t].exec(F[t]))return !1;return !0},t.exec=function(u,D){void 0===u&&(u={});var t={pathname:"",protocol:"",username:"",password:"",hostname:"",port:"",search:"",hash:""};if("string"!=typeof u&&D)throw new TypeError("parameter 1 is not of type 'string'.");if(void 0!==u){try{t=H(t,"object"==typeof u?u:O(u,D),!1);}catch(u){return null}var e,C={};for(e in C.inputs=D?[u,D]:[u],this.pattern){var A=this.regexp[e].exec(t[e]);if(!A)return null;for(var E,n={},r=F$1(this.keys[e].entries());!(E=r()).done;){var i=E.value,s=i[1];"string"!=typeof s.name&&"number"!=typeof s.name||(n[s.name]=A[i[0]+1]||"");}C[e]={input:t[e]||"",groups:n};}return C}},D(u,[{key:"protocol",get:function(){return this.component_pattern.protocol}},{key:"username",get:function(){return this.component_pattern.username}},{key:"password",get:function(){return this.component_pattern.password}},{key:"hostname",get:function(){return this.component_pattern.hostname}},{key:"port",get:function(){return this.component_pattern.port}},{key:"pathname",get:function(){return this.component_pattern.pathname}},{key:"search",get:function(){return this.component_pattern.search}},{key:"hash",get:function(){return this.component_pattern.hash}}]),u}(); + +const INTERNAL = { tick: 0, pool: new Map }; +function setTimeout(callback, delay = 0, ...args) { + const func = __function_bind(callback, globalThis); + const tick = ++INTERNAL.tick; + const timeout = setTimeout$1(func, delay, ...args); + INTERNAL.pool.set(tick, timeout); + return tick; +} +function clearTimeout(timeoutId) { + const timeout = INTERNAL.pool.get(timeoutId); + if (timeout) { + clearTimeout$1(timeout); + INTERNAL.pool.delete(timeoutId); + } +} + +const PRIMITIVE = 0; +const ARRAY = 1; +const OBJECT = 2; +const DATE = 3; +const REGEXP = 4; +const MAP = 5; +const SET = 6; +const ERROR = 7; +const BIGINT = 8; +// export const SYMBOL = 9; + +const env = typeof self === 'object' ? self : globalThis; + +const deserializer = ($, _) => { + const as = (out, index) => { + $.set(index, out); + return out; + }; + + const unpair = index => { + if ($.has(index)) + return $.get(index); + + const [type, value] = _[index]; + switch (type) { + case PRIMITIVE: + return as(value, index); + case ARRAY: { + const arr = as([], index); + for (const index of value) + arr.push(unpair(index)); + return arr; + } + case OBJECT: { + const object = as({}, index); + for (const [key, index] of value) + object[unpair(key)] = unpair(index); + return object; + } + case DATE: + return as(new Date(value), index); + case REGEXP: { + const {source, flags} = value; + return as(new RegExp(source, flags), index); + } + case MAP: { + const map = as(new Map, index); + for (const [key, index] of value) + map.set(unpair(key), unpair(index)); + return map; + } + case SET: { + const set = as(new Set, index); + for (const index of value) + set.add(unpair(index)); + return set; + } + case ERROR: { + const {name, message} = value; + return as(new env[name](message), index); + } + case BIGINT: + return as(BigInt(value), index); + case 'BigInt': + return as(Object(BigInt(value)), index); + } + return as(new env[type](value), index); + }; + + return unpair; +}; + +/** + * @typedef {Array<string,any>} Record a type representation + */ + +/** + * Returns a deserialized value from a serialized array of Records. + * @param {Record[]} serialized a previously serialized value. + * @returns {any} + */ +const deserialize = serialized => deserializer(new Map, serialized)(0); + +const EMPTY = ''; + +const {toString} = {}; +const {keys} = Object; + +const typeOf = value => { + const type = typeof value; + if (type !== 'object' || !value) + return [PRIMITIVE, type]; + + const asString = toString.call(value).slice(8, -1); + switch (asString) { + case 'Array': + return [ARRAY, EMPTY]; + case 'Object': + return [OBJECT, EMPTY]; + case 'Date': + return [DATE, EMPTY]; + case 'RegExp': + return [REGEXP, EMPTY]; + case 'Map': + return [MAP, EMPTY]; + case 'Set': + return [SET, EMPTY]; + } + + if (asString.includes('Array')) + return [ARRAY, asString]; + + if (asString.includes('Error')) + return [ERROR, asString]; + + return [OBJECT, asString]; +}; + +const shouldSkip = ([TYPE, type]) => ( + TYPE === PRIMITIVE && + (type === 'function' || type === 'symbol') +); + +const serializer = (strict, json, $, _) => { + + const as = (out, value) => { + const index = _.push(out) - 1; + $.set(value, index); + return index; + }; + + const pair = value => { + if ($.has(value)) + return $.get(value); + + let [TYPE, type] = typeOf(value); + switch (TYPE) { + case PRIMITIVE: { + let entry = value; + switch (type) { + case 'bigint': + TYPE = BIGINT; + entry = value.toString(); + break; + case 'function': + case 'symbol': + if (strict) + throw new TypeError('unable to serialize ' + type); + entry = null; + break; + } + return as([TYPE, entry], value); + } + case ARRAY: { + if (type) + return as([type, [...value]], value); + + const arr = []; + const index = as([TYPE, arr], value); + for (const entry of value) + arr.push(pair(entry)); + return index; + } + case OBJECT: { + if (type) { + switch (type) { + case 'BigInt': + return as([type, value.toString()], value); + case 'Boolean': + case 'Number': + case 'String': + return as([type, value.valueOf()], value); + } + } + + if (json && ('toJSON' in value)) + return pair(value.toJSON()); + + const entries = []; + const index = as([TYPE, entries], value); + for (const key of keys(value)) { + if (strict || !shouldSkip(typeOf(value[key]))) + entries.push([pair(key), pair(value[key])]); + } + return index; + } + case DATE: + return as([TYPE, value.toISOString()], value); + case REGEXP: { + const {source, flags} = value; + return as([TYPE, {source, flags}], value); + } + case MAP: { + const entries = []; + const index = as([TYPE, entries], value); + for (const [key, entry] of value) { + if (strict || !(shouldSkip(typeOf(key)) || shouldSkip(typeOf(entry)))) + entries.push([pair(key), pair(entry)]); + } + return index; + } + case SET: { + const entries = []; + const index = as([TYPE, entries], value); + for (const entry of value) { + if (strict || !shouldSkip(typeOf(entry))) + entries.push(pair(entry)); + } + return index; + } + } + + const {message} = value; + return as([TYPE, {name: type, message}], value); + }; + + return pair; +}; + +/** + * @typedef {Array<string,any>} Record a type representation + */ + +/** + * Returns an array of serialized Records. + * @param {any} value a serializable value. + * @param {{lossy?: boolean}?} options an object with a `lossy` property that, + * if `true`, will not throw errors on incompatible types, and behave more + * like JSON stringify would behave. Symbol and Function will be discarded. + * @returns {Record[]} + */ + const serialize = (value, {json, lossy} = {}) => { + const _ = []; + return serializer(!(json || lossy), !!json, new Map, _)(value), _; +}; + +var structuredClone = (any, options) => deserialize(serialize(any, options)); + +class ImageData { + constructor(arg0, arg1, ...args) { + if (arguments.length < 2) + throw new TypeError(`Failed to construct 'ImageData': 2 arguments required.`); + /** Whether Uint8ClampedArray data is provided. */ + const hasData = __object_isPrototypeOf(Uint8ClampedArray.prototype, arg0); + /** Image data, either provided or calculated. */ + const d = hasData ? arg0 : new Uint8ClampedArray(asNumber(arg0, 'width') * asNumber(arg1, 'height') * 4); + /** Image width. */ + const w = asNumber(hasData ? arg1 : arg0, 'width'); + /** Image height. */ + const h = d.length / w / 4; + /** Image color space. */ + const c = String(Object(hasData ? args[1] : args[0]).colorSpace || 'srgb'); + // throw if a provided height does not match the calculated height + if (args.length && asNumber(args[0], 'height') !== h) + throw new DOMException('height is not equal to (4 * width * height)', 'IndexSizeError'); + // throw if a provided colorspace does not match a known colorspace + if (c !== 'srgb' && c !== 'rec2020' && c !== 'display-p3') + throw new TypeError('colorSpace is not known value'); + Object.defineProperty(this, 'data', { configurable: true, enumerable: true, value: d }); + INTERNALS$3.set(this, { width: w, height: h, colorSpace: c }); + } + get data() { + internalsOf(this, 'ImageData', 'data'); + return Object.getOwnPropertyDescriptor(this, 'data').value; + } + get width() { + return internalsOf(this, 'ImageData', 'width').width; + } + get height() { + return internalsOf(this, 'ImageData', 'height').height; + } +} +allowStringTag(ImageData); +/** Returns a coerced number, optionally throwing if the number is zero-ish. */ +const asNumber = (value, axis) => { + value = Number(value) || 0; + if (value === 0) + throw new TypeError(`The source ${axis} is zero or not a number.`); + return value; +}; + +class CanvasRenderingContext2D { + get canvas() { + return internalsOf(this, 'CanvasRenderingContext2D', 'canvas').canvas; + } + get direction() { + return internalsOf(this, 'CanvasRenderingContext2D', 'direction').direction; + } + get fillStyle() { + return internalsOf(this, 'CanvasRenderingContext2D', 'fillStyle').fillStyle; + } + get filter() { + return internalsOf(this, 'CanvasRenderingContext2D', 'filter').filter; + } + get globalAlpha() { + return internalsOf(this, 'CanvasRenderingContext2D', 'globalAlpha').globalAlpha; + } + get globalCompositeOperation() { + return internalsOf(this, 'CanvasRenderingContext2D', 'globalCompositeOperation').globalCompositeOperation; + } + get font() { + return internalsOf(this, 'CanvasRenderingContext2D', 'font').font; + } + get imageSmoothingEnabled() { + return internalsOf(this, 'CanvasRenderingContext2D', 'imageSmoothingEnabled').imageSmoothingEnabled; + } + get imageSmoothingQuality() { + return internalsOf(this, 'CanvasRenderingContext2D', 'imageSmoothingQuality').imageSmoothingQuality; + } + get lineCap() { + return internalsOf(this, 'CanvasRenderingContext2D', 'lineCap').lineCap; + } + get lineDashOffset() { + return internalsOf(this, 'CanvasRenderingContext2D', 'lineDashOffset').lineDashOffset; + } + get lineJoin() { + return internalsOf(this, 'CanvasRenderingContext2D', 'lineJoin').lineJoin; + } + get lineWidth() { + return internalsOf(this, 'CanvasRenderingContext2D', 'lineWidth').lineWidth; + } + get miterLimit() { + return internalsOf(this, 'CanvasRenderingContext2D', 'miterLimit').miterLimit; + } + get strokeStyle() { + return internalsOf(this, 'CanvasRenderingContext2D', 'strokeStyle').strokeStyle; + } + get shadowOffsetX() { + return internalsOf(this, 'CanvasRenderingContext2D', 'shadowOffsetX').shadowOffsetX; + } + get shadowOffsetY() { + return internalsOf(this, 'CanvasRenderingContext2D', 'shadowOffsetY').shadowOffsetY; + } + get shadowBlur() { + return internalsOf(this, 'CanvasRenderingContext2D', 'shadowBlur').shadowBlur; + } + get shadowColor() { + return internalsOf(this, 'CanvasRenderingContext2D', 'shadowColor').shadowColor; + } + get textAlign() { + return internalsOf(this, 'CanvasRenderingContext2D', 'textAlign').textAlign; + } + get textBaseline() { + return internalsOf(this, 'CanvasRenderingContext2D', 'textBaseline').textBaseline; + } + arc() { } + arcTo() { } + beginPath() { } + bezierCurveTo() { } + clearRect() { } + clip() { } + closePath() { } + createImageData(arg0, arg1) { + /** Whether ImageData is provided. */ + const hasData = __object_isPrototypeOf(ImageData.prototype, arg0); + const w = hasData ? arg0.width : arg0; + const h = hasData ? arg0.height : arg1; + const d = hasData ? arg0.data : new Uint8ClampedArray(w * h * 4); + return new ImageData(d, w, h); + } + createLinearGradient() { } + createPattern() { } + createRadialGradient() { } + drawFocusIfNeeded() { } + drawImage() { } + ellipse() { } + fill() { } + fillRect() { } + fillText() { } + getContextAttributes() { } + getImageData() { } + getLineDash() { } + getTransform() { } + isPointInPath() { } + isPointInStroke() { } + lineTo() { } + measureText() { } + moveTo() { } + putImageData() { } + quadraticCurveTo() { } + rect() { } + resetTransform() { } + restore() { } + rotate() { } + save() { } + scale() { } + setLineDash() { } + setTransform() { } + stroke() { } + strokeRect() { } + strokeText() { } + transform() { } + translate() { } +} +allowStringTag(CanvasRenderingContext2D); +const __createCanvasRenderingContext2D = (canvas) => { + const renderingContext2D = Object.create(CanvasRenderingContext2D.prototype); + INTERNALS$3.set(renderingContext2D, { + canvas, + direction: 'inherit', + fillStyle: '#000', + filter: 'none', + font: '10px sans-serif', + globalAlpha: 0, + globalCompositeOperation: 'source-over', + imageSmoothingEnabled: false, + imageSmoothingQuality: 'high', + lineCap: 'butt', + lineDashOffset: 0.0, + lineJoin: 'miter', + lineWidth: 1.0, + miterLimit: 10.0, + shadowBlur: 0, + shadowColor: '#000', + shadowOffsetX: 0, + shadowOffsetY: 0, + strokeStyle: '#000', + textAlign: 'start', + textBaseline: 'alphabetic', + }); + return renderingContext2D; +}; + +class StyleSheet { +} +class CSSStyleSheet extends StyleSheet { + async replace(text) { + return new CSSStyleSheet(); + } + replaceSync(text) { + return new CSSStyleSheet(); + } + get cssRules() { + return []; + } +} +allowStringTag(StyleSheet); +allowStringTag(CSSStyleSheet); + +class CustomElementRegistry { + /** Defines a new custom element using the given tag name and HTMLElement constructor. */ + define(name, constructor, options) { + const internals = internalsOf(this, 'CustomElementRegistry', 'define'); + name = String(name); + if (/[A-Z]/.test(name)) + throw new SyntaxError('Custom element name cannot contain an uppercase ASCII letter'); + if (!/^[a-z]/.test(name)) + throw new SyntaxError('Custom element name must have a lowercase ASCII letter as its first character'); + if (!/-/.test(name)) + throw new SyntaxError('Custom element name must contain a hyphen'); + internals.constructorByName.set(name, constructor); + internals.nameByConstructor.set(constructor, name); + } + /** Returns the constructor associated with the given tag name. */ + get(name) { + const internals = internalsOf(this, 'CustomElementRegistry', 'get'); + name = String(name).toLowerCase(); + return internals.constructorByName.get(name); + } + getName(constructor) { + const internals = internalsOf(this, 'CustomElementRegistry', 'getName'); + return internals.nameByConstructor.get(constructor); + } +} +allowStringTag(CustomElementRegistry); +const initCustomElementRegistry = (target, exclude) => { + if (exclude.has('customElements')) + return; + const CustomElementRegistry = target.CustomElementRegistry || globalThis.CustomElementRegistry; + const customElements = target.customElements = Object.create(CustomElementRegistry.prototype); + INTERNALS$3.set(customElements, { + constructorByName: new Map, + nameByConstructor: new Map, + }); +}; + +class Element extends Node { + hasAttribute(name) { + return false; + } + getAttribute(name) { + return null; + } + setAttribute(name, value) { + } + removeAttribute(name) { + } + attachShadow(init) { + if (arguments.length < 1) + throw new TypeError(`Failed to execute 'attachShadow' on 'Element': 1 argument required, but only 0 present.`); + if (init !== Object(init)) + throw new TypeError(`Failed to execute 'attachShadow' on 'Element': The provided value is not of type 'ShadowRootInit'.`); + if (init.mode !== 'open' && init.mode !== 'closed') + throw new TypeError(`Failed to execute 'attachShadow' on 'Element': Failed to read the 'mode' property from 'ShadowRootInit': The provided value '${init.mode}' is not a valid enum value of type ShadowRootMode.`); + const internals = internalsOf(this, 'Element', 'attachShadow'); + if (internals.shadowRoot) + throw new Error('The operation is not supported.'); + internals.shadowInit = internals.shadowInit || { + mode: init.mode, + delegatesFocus: Boolean(init.delegatesFocus), + }; + internals.shadowRoot = internals.shadowRoot || (/^open$/.test(internals.shadowInit.mode) ? Object.setPrototypeOf(new EventTarget(), ShadowRoot.prototype) : null); + return internals.shadowRoot; + } + get assignedSlot() { + return null; + } + get innerHTML() { + internalsOf(this, 'Element', 'innerHTML'); + return ''; + } + set innerHTML(value) { + internalsOf(this, 'Element', 'innerHTML'); + } + get shadowRoot() { + const internals = internalsOf(this, 'Element', 'shadowRoot'); + return Object(internals.shadowInit).mode === 'open' ? internals.shadowRoot : null; + } + get localName() { + return internalsOf(this, 'Element', 'localName').localName; + } + get nodeName() { + return internalsOf(this, 'Element', 'nodeName').localName.toUpperCase(); + } + get tagName() { + return internalsOf(this, 'Element', 'tagName').localName.toUpperCase(); + } +} +class HTMLElement extends Element { +} +class HTMLBodyElement extends HTMLElement { +} +class HTMLDivElement extends HTMLElement { +} +class HTMLHeadElement extends HTMLElement { +} +class HTMLHtmlElement extends HTMLElement { +} +class HTMLSpanElement extends HTMLElement { +} +class HTMLStyleElement extends HTMLElement { +} +class HTMLTemplateElement extends HTMLElement { +} +class HTMLUnknownElement extends HTMLElement { +} +allowStringTag(Element); +allowStringTag(HTMLElement); +allowStringTag(HTMLBodyElement); +allowStringTag(HTMLDivElement); +allowStringTag(HTMLHeadElement); +allowStringTag(HTMLHtmlElement); +allowStringTag(HTMLSpanElement); +allowStringTag(HTMLStyleElement); +allowStringTag(HTMLTemplateElement); +allowStringTag(HTMLUnknownElement); + +class Document extends Node { + createElement(name) { + const internals = internalsOf(this, 'Document', 'createElement'); + const customElementInternals = INTERNALS$3.get(internals.target.customElements); + name = String(name).toLowerCase(); + const TypeOfHTMLElement = internals.constructorByName.get(name) || (customElementInternals && customElementInternals.constructorByName.get(name)) || HTMLUnknownElement; + const element = Object.setPrototypeOf(new EventTarget(), TypeOfHTMLElement.prototype); + INTERNALS$3.set(element, { + attributes: {}, + localName: name, + ownerDocument: this, + shadowInit: null, + shadowRoot: null, + }); + return element; + } + createNodeIterator(root, whatToShow = NodeFilter.SHOW_ALL, filter) { + const target = Object.create(NodeIterator.prototype); + INTERNALS$3.set(target, { filter, pointerBeforeReferenceNode: false, referenceNode: root, root, whatToShow }); + return target; + } + createTextNode(data) { + return new Text(data); + } + createTreeWalker(root, whatToShow = NodeFilter.SHOW_ALL, filter, expandEntityReferences) { + const target = Object.create(TreeWalker.prototype); + INTERNALS$3.set(target, { filter, currentNode: root, root, whatToShow }); + return target; + } + get adoptedStyleSheets() { + return []; + } + get styleSheets() { + return []; + } +} +class HTMLDocument extends Document { +} +allowStringTag(Document); +allowStringTag(HTMLDocument); +const initDocument = (target, exclude) => { + if (exclude.has('document')) + return; + const EventTarget = target.EventTarget || globalThis.EventTarget; + const HTMLDocument = target.HTMLDocument || globalThis.HTMLDocument; + const document = target.document = Object.setPrototypeOf(new EventTarget(), HTMLDocument.prototype); + INTERNALS$3.set(document, { + target, + constructorByName: new Map([ + ['body', target.HTMLBodyElement], + ['canvas', target.HTMLCanvasElement], + ['div', target.HTMLDivElement], + ['head', target.HTMLHeadElement], + ['html', target.HTMLHtmlElement], + ['img', target.HTMLImageElement], + ['span', target.HTMLSpanElement], + ['style', target.HTMLStyleElement], + ]), + nameByConstructor: new Map, + }); + const initElement = (name, Class) => { + const target = Object.setPrototypeOf(new EventTarget(), Class.prototype); + INTERNALS$3.set(target, { + attributes: {}, + localName: name, + ownerDocument: document, + shadowRoot: null, + shadowInit: null, + }); + return target; + }; + document.body = initElement('body', target.HTMLBodyElement); + document.head = initElement('head', target.HTMLHeadElement); + document.documentElement = initElement('html', target.HTMLHtmlElement); +}; + +class HTMLCanvasElement extends HTMLElement { + get height() { + return internalsOf(this, 'HTMLCanvasElement', 'height').height; + } + set height(value) { + internalsOf(this, 'HTMLCanvasElement', 'height').height = Number(value) || 0; + } + get width() { + return internalsOf(this, 'HTMLCanvasElement', 'width').width; + } + set width(value) { + internalsOf(this, 'HTMLCanvasElement', 'width').width = Number(value) || 0; + } + captureStream() { + return null; + } + getContext(contextType) { + const internals = internalsOf(this, 'HTMLCanvasElement', 'getContext'); + switch (contextType) { + case '2d': + if (internals.renderingContext2D) + return internals.renderingContext2D; + internals.renderingContext2D = __createCanvasRenderingContext2D(this); + return internals.renderingContext2D; + default: + return null; + } + } + toBlob() { } + toDataURL() { } + transferControlToOffscreen() { } +} +allowStringTag(HTMLCanvasElement); + +class HTMLImageElement extends HTMLElement { + get src() { + return internalsOf(this, 'HTMLImageElement', 'src').src; + } + set src(value) { + const internals = internalsOf(this, 'HTMLImageElement', 'src'); + internals.src = String(value); + } +} +allowStringTag(HTMLImageElement); + +function Image() { + // @ts-ignore + INTERNALS$3.set(this, { + attributes: {}, + localName: 'img', + innerHTML: '', + shadowRoot: null, + shadowInit: null, + }); +} +Image.prototype = HTMLImageElement.prototype; + +class IntersectionObserver { + disconnect() { } + observe() { } + takeRecords() { + return []; + } + unobserve() { } +} +class MutationObserver { + disconnect() { } + observe() { } + takeRecords() { + return []; + } + unobserve() { } +} +class ResizeObserver { + disconnect() { } + observe() { } + takeRecords() { + return []; + } + unobserve() { } +} +allowStringTag(MutationObserver); +allowStringTag(IntersectionObserver); +allowStringTag(ResizeObserver); + +class MediaQueryList extends EventTarget { + get matches() { + return internalsOf(this, 'MediaQueryList', 'matches').matches; + } + get media() { + return internalsOf(this, 'MediaQueryList', 'media').media; + } +} +allowStringTag(MediaQueryList); +const initMediaQueryList = (target, exclude) => { + if (exclude.has('MediaQueryList') || exclude.has('matchMedia')) + return; + const EventTarget = target.EventTarget || globalThis.EventTarget; + const MediaQueryList = target.MediaQueryList || globalThis.MediaQueryList; + target.matchMedia = function matchMedia(media) { + const mql = Object.setPrototypeOf(new EventTarget(), MediaQueryList.prototype); + INTERNALS$3.set(mql, { + matches: false, + media, + }); + return mql; + }; +}; + +class OffscreenCanvas extends EventTarget { + constructor(width, height) { + super(); + if (arguments.length < 2) + throw new TypeError(`Failed to construct 'OffscreenCanvas': 2 arguments required.`); + width = Number(width) || 0; + height = Number(height) || 0; + INTERNALS$3.set(this, { width, height }); + } + get height() { + return internalsOf(this, 'OffscreenCanvas', 'height').height; + } + set height(value) { + internalsOf(this, 'OffscreenCanvas', 'height').height = Number(value) || 0; + } + get width() { + return internalsOf(this, 'OffscreenCanvas', 'width').width; + } + set width(value) { + internalsOf(this, 'OffscreenCanvas', 'width').width = Number(value) || 0; + } + getContext(contextType) { + const internals = internalsOf(this, 'HTMLCanvasElement', 'getContext'); + switch (contextType) { + case '2d': + if (internals.renderingContext2D) + return internals.renderingContext2D; + internals.renderingContext2D = __createCanvasRenderingContext2D(this); + return internals.renderingContext2D; + default: + return null; + } + } + convertToBlob(options) { + options = Object(options); + Number(options.quality) || 0; + const type = getImageType(String(options.type).trim().toLowerCase()); + return Promise.resolve(new Blob([], { type })); + } +} +allowStringTag(OffscreenCanvas); +const getImageType = (type) => type === 'image/avif' || type === 'image/jpeg' || type === 'image/png' || type === 'image/webp' ? type : 'image/png'; + +class Storage { + clear() { + internalsOf(this, 'Storage', 'clear').storage.clear(); + } + getItem(key) { + return getStringOrNull(internalsOf(this, 'Storage', 'getItem').storage.get(String(key))); + } + key(index) { + return getStringOrNull([...internalsOf(this, 'Storage', 'key').storage.keys()][Number(index) || 0]); + } + removeItem(key) { + internalsOf(this, 'Storage', 'getItem').storage.delete(String(key)); + } + setItem(key, value) { + internalsOf(this, 'Storage', 'getItem').storage.set(String(key), String(value)); + } + get length() { + return internalsOf(this, 'Storage', 'size').storage.size; + } +} +const getStringOrNull = (value) => typeof value === 'string' ? value : null; +const initStorage = (target, exclude) => { + if (exclude.has('Storage') || exclude.has('localStorage')) + return; + target.localStorage = Object.create(Storage.prototype); + const storageInternals = new Map(); + INTERNALS$3.set(target.localStorage, { + storage: storageInternals + }); +}; + +class Window extends EventTarget { + get self() { + return this; + } + get top() { + return this; + } + get window() { + return this; + } + get innerHeight() { + return 0; + } + get innerWidth() { + return 0; + } + get scrollX() { + return 0; + } + get scrollY() { + return 0; + } +} +allowStringTag(Window); +const initWindow = (target, exclude) => { + if (exclude.has('Window') || exclude.has('window')) + return; + target.window = target; +}; + +function alert(...messages) { + console.log(...messages); +} + +const hasOwn = { + hasOwn(instance, property) { + return __object_hasOwnProperty(instance, property); + } +}.hasOwn; +const initObject = (target, exclude) => { + if (exclude.has('Object') || exclude.has('object') || exclude.has('hasOwn')) + return; + const Class = target.Object || globalThis.Object; + Object.defineProperty(Class, 'hasOwn', { + value: hasOwn, + writable: true, + enumerable: false, + configurable: true + }); +}; + +const any = { + async any(iterable) { + return Promise.all([...iterable].map(promise => { + return new Promise((resolve, reject) => Promise.resolve(promise).then(reject, resolve)); + })).then(errors => Promise.reject(errors), value => Promise.resolve(value)); + } +}.any; +const initPromise = (target, exclude) => { + if (exclude.has('Promise') || exclude.has('any')) + return; + const Class = target.Promise || globalThis.Promise; + if (!Class.any) + Object.defineProperty(Class, 'any', { + value: any, + writable: true, + enumerable: false, + configurable: true + }); +}; + +const at = { + at(index) { + index = Math.trunc(index) || 0; + if (index < 0) + index += this.length; + if (index < 0 || index >= this.length) + return undefined; + return this[index]; + } +}.at; +const initRelativeIndexingMethod = (target, exclude) => { + if (exclude.has('at')) + return; + const Classes = []; + if (!exclude.has('TypedArray')) + Classes.push(Object.getPrototypeOf(target.Int8Array || globalThis.Int8Array)); + if (!exclude.has('Array')) + Classes.push(target.Array || globalThis.Array); + if (!exclude.has('String')) + Classes.push(target.String || globalThis.String); + for (const Class of Classes) { + if (!Class.prototype.at) + Object.defineProperty(Class.prototype, 'at', { + value: at, + writable: true, + enumerable: false, + configurable: true + }); + } +}; + +const replaceAll = { + replaceAll(searchValue, replaceValue) { + return __object_isPrototypeOf(RegExp.prototype, searchValue) + ? this.replace(searchValue, replaceValue) + : this.replace(new RegExp(__string_escapeRegExp(searchValue), 'g'), replaceValue); + } +}.replaceAll; +const initString = (target, exclude) => { + if (exclude.has('String') || exclude.has('replaceAll')) + return; + const Class = target.String || globalThis.String; + if (!Class.prototype.replaceAll) + Object.defineProperty(Class.prototype, 'replaceAll', { + value: replaceAll, + writable: true, + enumerable: false, + configurable: true + }); +}; + +const exclusionsForHTMLElement = ['CustomElementsRegistry', 'HTMLElement', 'HTMLBodyElement', 'HTMLCanvasElement', 'HTMLDivElement', 'HTMLHeadElement', 'HTMLHtmlElement', 'HTMLImageElement', 'HTMLStyleElement', 'HTMLTemplateElement', 'HTMLUnknownElement', 'Image']; +const exclusionsForElement = ['Element', ...exclusionsForHTMLElement]; +const exclusionsForDocument = ['CustomElementsRegistry', 'Document', 'HTMLDocument', 'document', 'customElements']; +const exclusionsForNode = ['Node', 'DocumentFragment', 'ShadowRoot', ...exclusionsForDocument, ...exclusionsForElement]; +const exclusionsForEventTarget = ['AbortSignal', 'Event', 'CustomEvent', 'EventTarget', 'OffscreenCanvas', 'MediaQueryList', 'Window', ...exclusionsForNode]; +const exclusionsForEvent = ['AbortSignal', 'Event', 'CustomEvent', 'EventTarget', 'MediaQueryList', 'OffscreenCanvas', 'Window', ...exclusionsForNode]; +const exclusions = { + 'Blob+': ['Blob', 'File'], + 'Document+': exclusionsForDocument, + 'Element+': exclusionsForElement, + 'Event+': exclusionsForEvent, + 'EventTarget+': exclusionsForEventTarget, + 'HTMLElement+': exclusionsForHTMLElement, + 'Node+': exclusionsForNode, + 'StyleSheet+': ['StyleSheet', 'CSSStyleSheet'], +}; + +const inheritence = { + CSSStyleSheet: 'StyleSheet', + CustomEvent: 'Event', + DOMException: 'Error', + Document: 'Node', + DocumentFragment: 'Node', + Element: 'Node', + File: 'Blob', + HTMLDocument: 'Document', + HTMLElement: 'Element', + HTMLBodyElement: 'HTMLElement', + HTMLCanvasElement: 'HTMLElement', + HTMLDivElement: 'HTMLElement', + HTMLHeadElement: 'HTMLElement', + HTMLHtmlElement: 'HTMLElement', + HTMLImageElement: 'HTMLElement', + HTMLSpanElement: 'HTMLElement', + HTMLStyleElement: 'HTMLElement', + HTMLTemplateElement: 'HTMLElement', + HTMLUnknownElement: 'HTMLElement', + Image: 'HTMLElement', + MediaQueryList: 'EventTarget', + Node: 'EventTarget', + OffscreenCanvas: 'EventTarget', + ShadowRoot: 'DocumentFragment', + Window: 'EventTarget', +}; + +const polyfill = (target, options) => { + const webAPIs = { + AbortController, + AbortSignal, + Blob, + ByteLengthQueuingStrategy, + CanvasRenderingContext2D, + CharacterData, + Comment, + CountQueuingStrategy, + CSSStyleSheet, + CustomElementRegistry, + CustomEvent, + Document, + DocumentFragment, + DOMException, + Element, + Event, + EventTarget, + File, + FormData, + HTMLDocument, + HTMLElement, + HTMLBodyElement, + HTMLCanvasElement, + HTMLDivElement, + HTMLHeadElement, + HTMLHtmlElement, + HTMLImageElement, + HTMLSpanElement, + HTMLStyleElement, + HTMLTemplateElement, + HTMLUnknownElement, + Headers, + IntersectionObserver, + Image, + ImageData, + MediaQueryList, + MutationObserver, + Node, + NodeFilter: NodeFilter$1, + NodeIterator: NodeIterator$1, + OffscreenCanvas, + ReadableByteStreamController, + ReadableStream, + ReadableStreamBYOBReader, + ReadableStreamBYOBRequest, + ReadableStreamDefaultController, + ReadableStreamDefaultReader, + Request, + ResizeObserver, + Response, + ShadowRoot, + Storage, + StyleSheet, + Text, + TransformStream, + TreeWalker, + URLPattern: U, + WritableStream, + WritableStreamDefaultController, + WritableStreamDefaultWriter, + Window, + alert, + atob, + btoa, + cancelAnimationFrame, + cancelIdleCallback, + clearTimeout, + fetch, + requestAnimationFrame, + requestIdleCallback, + setTimeout, + structuredClone, + }; + // initialize exclude options + const excludeOptions = new Set(typeof Object(options).exclude === 'string' + ? String(Object(options).exclude).trim().split(/\s+/) + : Array.isArray(Object(options).exclude) + ? Object(options).exclude.reduce((array, entry) => array.splice(array.length, 0, ...(typeof entry === 'string' ? entry.trim().split(/\s+/) : [])) && array, []) + : []); + // expand exclude options using exclusion shorthands + for (const excludeOption of excludeOptions) { + if (excludeOption in exclusions) { + for (const exclusion of exclusions[excludeOption]) { + excludeOptions.add(exclusion); + } + } + } + // apply each WebAPI + for (const name of Object.keys(webAPIs)) { + // skip WebAPIs that are excluded + if (excludeOptions.has(name)) + continue; + // skip WebAPIs that are built-in + if (Object.hasOwnProperty.call(target, name)) + continue; + // define WebAPIs on the target + Object.defineProperty(target, name, { configurable: true, enumerable: true, writable: true, value: webAPIs[name] }); + } + // ensure WebAPIs correctly inherit other WebAPIs + for (const name of Object.keys(webAPIs)) { + // skip WebAPIs that are excluded + if (excludeOptions.has(name)) + continue; + // skip WebAPIs that do not extend other WebAPIs + if (!Object.hasOwnProperty.call(inheritence, name)) + continue; + const Class = target[name]; + const Super = target[inheritence[name]]; + // skip WebAPIs that are not available + if (!Class || !Super) + continue; + // skip WebAPIs that are already inherited correctly + if (Object.getPrototypeOf(Class.prototype) === Super.prototype) + continue; + // define WebAPIs inheritence + Object.setPrototypeOf(Class.prototype, Super.prototype); + } + if (!excludeOptions.has('HTMLDocument') && !excludeOptions.has('HTMLElement')) { + initDocument(target, excludeOptions); + if (!excludeOptions.has('CustomElementRegistry')) { + initCustomElementRegistry(target, excludeOptions); + } + } + initObject(target, excludeOptions); + initMediaQueryList(target, excludeOptions); + initPromise(target, excludeOptions); + initRelativeIndexingMethod(target, excludeOptions); + initStorage(target, excludeOptions); + initString(target, excludeOptions); + initWindow(target, excludeOptions); + return target; +}; +polyfill.internals = (target, name) => { + const init = { + CustomElementRegistry: initCustomElementRegistry, + Document: initDocument, + MediaQueryList: initMediaQueryList, + Object: initObject, + Promise: initPromise, + RelativeIndexingMethod: initRelativeIndexingMethod, + Storage: initStorage, + String: initString, + Window: initWindow, + }; + init[name](target, new Set()); + return target; +}; + +let s = 0; +const S = { + START_BOUNDARY: s++, + HEADER_FIELD_START: s++, + HEADER_FIELD: s++, + HEADER_VALUE_START: s++, + HEADER_VALUE: s++, + HEADER_VALUE_ALMOST_DONE: s++, + HEADERS_ALMOST_DONE: s++, + PART_DATA_START: s++, + PART_DATA: s++, + END: s++ +}; + +let f = 1; +const F = { + PART_BOUNDARY: f, + LAST_BOUNDARY: f *= 2 +}; + +const LF = 10; +const CR = 13; +const SPACE = 32; +const HYPHEN = 45; +const COLON = 58; +const A = 97; +const Z = 122; + +const lower = c => c | 0x20; + +const noop = () => {}; + +class MultipartParser { + /** + * @param {string} boundary + */ + constructor(boundary) { + this.index = 0; + this.flags = 0; + + this.onHeaderEnd = noop; + this.onHeaderField = noop; + this.onHeadersEnd = noop; + this.onHeaderValue = noop; + this.onPartBegin = noop; + this.onPartData = noop; + this.onPartEnd = noop; + + this.boundaryChars = {}; + + boundary = '\r\n--' + boundary; + const ui8a = new Uint8Array(boundary.length); + for (let i = 0; i < boundary.length; i++) { + ui8a[i] = boundary.charCodeAt(i); + this.boundaryChars[ui8a[i]] = true; + } + + this.boundary = ui8a; + this.lookbehind = new Uint8Array(this.boundary.length + 8); + this.state = S.START_BOUNDARY; + } + + /** + * @param {Uint8Array} data + */ + write(data) { + let i = 0; + const length_ = data.length; + let previousIndex = this.index; + let {lookbehind, boundary, boundaryChars, index, state, flags} = this; + const boundaryLength = this.boundary.length; + const boundaryEnd = boundaryLength - 1; + const bufferLength = data.length; + let c; + let cl; + + const mark = name => { + this[name + 'Mark'] = i; + }; + + const clear = name => { + delete this[name + 'Mark']; + }; + + const callback = (callbackSymbol, start, end, ui8a) => { + if (start === undefined || start !== end) { + this[callbackSymbol](ui8a && ui8a.subarray(start, end)); + } + }; + + const dataCallback = (name, clear) => { + const markSymbol = name + 'Mark'; + if (!(markSymbol in this)) { + return; + } + + if (clear) { + callback(name, this[markSymbol], i, data); + delete this[markSymbol]; + } else { + callback(name, this[markSymbol], data.length, data); + this[markSymbol] = 0; + } + }; + + for (i = 0; i < length_; i++) { + c = data[i]; + + switch (state) { + case S.START_BOUNDARY: + if (index === boundary.length - 2) { + if (c === HYPHEN) { + flags |= F.LAST_BOUNDARY; + } else if (c !== CR) { + return; + } + + index++; + break; + } else if (index - 1 === boundary.length - 2) { + if (flags & F.LAST_BOUNDARY && c === HYPHEN) { + state = S.END; + flags = 0; + } else if (!(flags & F.LAST_BOUNDARY) && c === LF) { + index = 0; + callback('onPartBegin'); + state = S.HEADER_FIELD_START; + } else { + return; + } + + break; + } + + if (c !== boundary[index + 2]) { + index = -2; + } + + if (c === boundary[index + 2]) { + index++; + } + + break; + case S.HEADER_FIELD_START: + state = S.HEADER_FIELD; + mark('onHeaderField'); + index = 0; + // falls through + case S.HEADER_FIELD: + if (c === CR) { + clear('onHeaderField'); + state = S.HEADERS_ALMOST_DONE; + break; + } + + index++; + if (c === HYPHEN) { + break; + } + + if (c === COLON) { + if (index === 1) { + // empty header field + return; + } + + dataCallback('onHeaderField', true); + state = S.HEADER_VALUE_START; + break; + } + + cl = lower(c); + if (cl < A || cl > Z) { + return; + } + + break; + case S.HEADER_VALUE_START: + if (c === SPACE) { + break; + } + + mark('onHeaderValue'); + state = S.HEADER_VALUE; + // falls through + case S.HEADER_VALUE: + if (c === CR) { + dataCallback('onHeaderValue', true); + callback('onHeaderEnd'); + state = S.HEADER_VALUE_ALMOST_DONE; + } + + break; + case S.HEADER_VALUE_ALMOST_DONE: + if (c !== LF) { + return; + } + + state = S.HEADER_FIELD_START; + break; + case S.HEADERS_ALMOST_DONE: + if (c !== LF) { + return; + } + + callback('onHeadersEnd'); + state = S.PART_DATA_START; + break; + case S.PART_DATA_START: + state = S.PART_DATA; + mark('onPartData'); + // falls through + case S.PART_DATA: + previousIndex = index; + + if (index === 0) { + // boyer-moore derrived algorithm to safely skip non-boundary data + i += boundaryEnd; + while (i < bufferLength && !(data[i] in boundaryChars)) { + i += boundaryLength; + } + + i -= boundaryEnd; + c = data[i]; + } + + if (index < boundary.length) { + if (boundary[index] === c) { + if (index === 0) { + dataCallback('onPartData', true); + } + + index++; + } else { + index = 0; + } + } else if (index === boundary.length) { + index++; + if (c === CR) { + // CR = part boundary + flags |= F.PART_BOUNDARY; + } else if (c === HYPHEN) { + // HYPHEN = end boundary + flags |= F.LAST_BOUNDARY; + } else { + index = 0; + } + } else if (index - 1 === boundary.length) { + if (flags & F.PART_BOUNDARY) { + index = 0; + if (c === LF) { + // unset the PART_BOUNDARY flag + flags &= ~F.PART_BOUNDARY; + callback('onPartEnd'); + callback('onPartBegin'); + state = S.HEADER_FIELD_START; + break; + } + } else if (flags & F.LAST_BOUNDARY) { + if (c === HYPHEN) { + callback('onPartEnd'); + state = S.END; + flags = 0; + } else { + index = 0; + } + } else { + index = 0; + } + } + + if (index > 0) { + // when matching a possible boundary, keep a lookbehind reference + // in case it turns out to be a false lead + lookbehind[index - 1] = c; + } else if (previousIndex > 0) { + // if our boundary turned out to be rubbish, the captured lookbehind + // belongs to partData + const _lookbehind = new Uint8Array(lookbehind.buffer, lookbehind.byteOffset, lookbehind.byteLength); + callback('onPartData', 0, previousIndex, _lookbehind); + previousIndex = 0; + mark('onPartData'); + + // reconsider the current character even so it interrupted the sequence + // it could be the beginning of a new sequence + i--; + } + + break; + case S.END: + break; + default: + throw new Error(`Unexpected state entered: ${state}`); + } + } + + dataCallback('onHeaderField'); + dataCallback('onHeaderValue'); + dataCallback('onPartData'); + + // Update properties for the next call + this.index = index; + this.state = state; + this.flags = flags; + } + + end() { + if ((this.state === S.HEADER_FIELD_START && this.index === 0) || + (this.state === S.PART_DATA && this.index === this.boundary.length)) { + this.onPartEnd(); + } else if (this.state !== S.END) { + throw new Error('MultipartParser.end(): stream ended unexpectedly'); + } + } +} + +function _fileName(headerValue) { + // matches either a quoted-string or a token (RFC 2616 section 19.5.1) + const m = headerValue.match(/\bfilename=("(.*?)"|([^()<>@,;:\\"/[\]?={}\s\t]+))($|;\s)/i); + if (!m) { + return; + } + + const match = m[2] || m[3] || ''; + let filename = match.slice(match.lastIndexOf('\\') + 1); + filename = filename.replace(/%22/g, '"'); + filename = filename.replace(/&#(\d{4});/g, (m, code) => { + return String.fromCharCode(code); + }); + return filename; +} + +async function toFormData(Body, ct) { + if (!/multipart/i.test(ct)) { + throw new TypeError('Failed to fetch'); + } + + const m = ct.match(/boundary=(?:"([^"]+)"|([^;]+))/i); + + if (!m) { + throw new TypeError('no or bad content-type header, no multipart boundary'); + } + + const parser = new MultipartParser(m[1] || m[2]); + + let headerField; + let headerValue; + let entryValue; + let entryName; + let contentType; + let filename; + const entryChunks = []; + const formData = new FormData(); + + const onPartData = ui8a => { + entryValue += decoder.decode(ui8a, {stream: true}); + }; + + const appendToFile = ui8a => { + entryChunks.push(ui8a); + }; + + const appendFileToFormData = () => { + const file = new File(entryChunks, filename, {type: contentType}); + formData.append(entryName, file); + }; + + const appendEntryToFormData = () => { + formData.append(entryName, entryValue); + }; + + const decoder = new TextDecoder('utf-8'); + decoder.decode(); + + parser.onPartBegin = function () { + parser.onPartData = onPartData; + parser.onPartEnd = appendEntryToFormData; + + headerField = ''; + headerValue = ''; + entryValue = ''; + entryName = ''; + contentType = ''; + filename = null; + entryChunks.length = 0; + }; + + parser.onHeaderField = function (ui8a) { + headerField += decoder.decode(ui8a, {stream: true}); + }; + + parser.onHeaderValue = function (ui8a) { + headerValue += decoder.decode(ui8a, {stream: true}); + }; + + parser.onHeaderEnd = function () { + headerValue += decoder.decode(); + headerField = headerField.toLowerCase(); + + if (headerField === 'content-disposition') { + // matches either a quoted-string or a token (RFC 2616 section 19.5.1) + const m = headerValue.match(/\bname=("([^"]*)"|([^()<>@,;:\\"/[\]?={}\s\t]+))/i); + + if (m) { + entryName = m[2] || m[3] || ''; + } + + filename = _fileName(headerValue); + + if (filename) { + parser.onPartData = appendToFile; + parser.onPartEnd = appendFileToFormData; + } + } else if (headerField === 'content-type') { + contentType = headerValue; + } + + headerValue = ''; + headerField = ''; + }; + + for await (const chunk of Body) { + parser.write(chunk); + } + + parser.end(); + + return formData; +} + +var multipartParser = /*#__PURE__*/Object.freeze({ + __proto__: null, + toFormData: toFormData +}); + +export { AbortController, AbortSignal, Blob, ByteLengthQueuingStrategy, CSSStyleSheet, CanvasRenderingContext2D, CharacterData, Comment, CountQueuingStrategy, CustomElementRegistry, CustomEvent, DOMException, Document, DocumentFragment, Element, Event, EventTarget, File, FormData, HTMLBodyElement, HTMLCanvasElement, HTMLDivElement, HTMLDocument, HTMLElement, HTMLHeadElement, HTMLHtmlElement, HTMLImageElement, HTMLSpanElement, HTMLStyleElement, HTMLTemplateElement, HTMLUnknownElement, Headers, Image, ImageData, IntersectionObserver, MediaQueryList, MutationObserver, Node, NodeFilter$1 as NodeFilter, NodeIterator$1 as NodeIterator, OffscreenCanvas, ReadableByteStreamController, ReadableStream, ReadableStreamBYOBReader, ReadableStreamBYOBRequest, ReadableStreamDefaultController, ReadableStreamDefaultReader, Request, ResizeObserver, Response, ShadowRoot, StyleSheet, Text, TransformStream, TreeWalker, U as URLPattern, Window, WritableStream, WritableStreamDefaultController, WritableStreamDefaultWriter, alert, atob, btoa, cancelAnimationFrame, cancelIdleCallback, clearTimeout, fetch, pathToPosix, polyfill, requestAnimationFrame, requestIdleCallback, setTimeout, structuredClone }; +//# sourceMappingURL=mod.js.map |