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-rw-r--r--src/bun.js/events.exports.js464
-rw-r--r--src/bun.js/module_loader.zig10
2 files changed, 1 insertions, 473 deletions
diff --git a/src/bun.js/events.exports.js b/src/bun.js/events.exports.js
deleted file mode 100644
index 3e4536ff2..000000000
--- a/src/bun.js/events.exports.js
+++ /dev/null
@@ -1,464 +0,0 @@
-// Reimplementation of https://nodejs.org/api/events.html
-// Reference: https://github.com/nodejs/node/blob/main/lib/events.js
-var { isPromise, Array, Object } = import.meta.primordials;
-const SymbolFor = Symbol.for;
-const ObjectDefineProperty = Object.defineProperty;
-const kCapture = Symbol("kCapture");
-const kErrorMonitor = SymbolFor("events.errorMonitor");
-const kMaxEventTargetListeners = Symbol("events.maxEventTargetListeners");
-const kMaxEventTargetListenersWarned = Symbol("events.maxEventTargetListenersWarned");
-const kWatermarkData = SymbolFor("nodejs.watermarkData");
-const kRejection = SymbolFor("nodejs.rejection");
-const captureRejectionSymbol = SymbolFor("nodejs.rejection");
-const ArrayPrototypeSlice = Array.prototype.slice;
-
-var defaultMaxListeners = 10;
-
-// EventEmitter must be a standard function because some old code will do weird tricks like `EventEmitter.apply(this)`.
-function EventEmitter(opts) {
- if (this._events === undefined || this._events === this.__proto__._events) {
- this._events = { __proto__: null };
- this._eventsCount = 0;
- }
-
- this._maxListeners ??= undefined;
- if (
- (this[kCapture] = opts?.captureRejections ? Boolean(opts?.captureRejections) : EventEmitter.prototype[kCapture])
- ) {
- this.emit = emitWithRejectionCapture;
- }
-}
-
-EventEmitter.prototype._events = undefined;
-EventEmitter.prototype._eventsCount = 0;
-EventEmitter.prototype._maxListeners = undefined;
-EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
- validateNumber(n, "setMaxListeners", 0);
- this._maxListeners = n;
- return this;
-};
-
-EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
- return this._maxListeners ?? defaultMaxListeners;
-};
-
-function emitError(emitter, args) {
- var { _events: events } = emitter;
- args[0] ??= new Error("Unhandled error.");
- if (!events) throw args[0];
- var errorMonitor = events[kErrorMonitor];
- if (errorMonitor) {
- for (var handler of ArrayPrototypeSlice.call(errorMonitor)) {
- handler.apply(emitter, args);
- }
- }
- var handlers = events.error;
- if (!handlers) throw args[0];
- for (var handler of ArrayPrototypeSlice.call(handlers)) {
- handler.apply(emitter, args);
- }
- return true;
-}
-
-function addCatch(emitter, promise, type, args) {
- promise.then(undefined, function (err) {
- // The callback is called with nextTick to avoid a follow-up rejection from this promise.
- process.nextTick(emitUnhandledRejectionOrErr, emitter, err, type, args);
- });
-}
-
-function emitUnhandledRejectionOrErr(emitter, err, type, args) {
- if (typeof emitter[kRejection] === "function") {
- emitter[kRejection](err, type, ...args);
- } else {
- // If the error handler throws, it is not catchable and it will end up in 'uncaughtException'.
- // We restore the previous value of kCapture in case the uncaughtException is present
- // and the exception is handled.
- try {
- emitter[kCapture] = false;
- emitter.emit("error", err);
- } finally {
- emitter[kCapture] = true;
- }
- }
-}
-
-const emitWithoutRejectionCapture = function emit(type, ...args) {
- if (type === "error") {
- return emitError(this, args);
- }
- var { _events: events } = this;
- if (events === undefined) return false;
- var handlers = events[type];
- if (handlers === undefined) return false;
-
- for (var handler of [...handlers]) {
- handler.apply(this, args);
- }
- return true;
-};
-
-const emitWithRejectionCapture = function emit(type, ...args) {
- if (type === "error") {
- return emitError(this, args);
- }
- var { _events: events } = this;
- if (events === undefined) return false;
- var handlers = events[type];
- if (handlers === undefined) return false;
- for (var handler of [...handlers]) {
- var result = handler.apply(this, args);
- if (result !== undefined && isPromise(result)) {
- addCatch(this, result, type, args);
- }
- }
- return true;
-};
-
-EventEmitter.prototype.emit = emitWithoutRejectionCapture;
-
-EventEmitter.prototype.addListener = function addListener(type, fn) {
- checkListener(fn);
- var events = this._events;
- if (!events) {
- events = this._events = { __proto__: null };
- this._eventsCount = 0;
- } else if (events.newListener) {
- this.emit("newListener", type, fn.listener ?? fn);
- }
- var handlers = events[type];
- if (!handlers) {
- events[type] = [fn];
- this._eventsCount++;
- } else {
- handlers.push(fn);
- var m = this._maxListeners ?? defaultMaxListeners;
- if (m > 0 && handlers.length > m && !handlers.warned) {
- overflowWarning(this, type, handlers);
- }
- }
- return this;
-};
-
-EventEmitter.prototype.on = EventEmitter.prototype.addListener;
-
-EventEmitter.prototype.prependListener = function prependListener(type, fn) {
- checkListener(fn);
- var events = this._events;
- if (!events) {
- events = this._events = { __proto__: null };
- this._eventsCount = 0;
- } else if (events.newListener) {
- this.emit("newListener", type, fn.listener ?? fn);
- }
- var handlers = events[type];
- if (!handlers) {
- events[type] = [fn];
- this._eventsCount++;
- } else {
- handlers.unshift(fn);
- var m = this._maxListeners ?? defaultMaxListeners;
- if (m > 0 && handlers.length > m && !handlers.warned) {
- overflowWarning(this, type, handlers);
- }
- }
- return this;
-};
-
-function overflowWarning(emitter, type, handlers) {
- handlers.warned = true;
- const warn = new Error(
- `Possible EventEmitter memory leak detected. ${handlers.length} ${String(type)} listeners ` +
- `added to [${emitter.constructor.name}]. Use emitter.setMaxListeners() to increase limit`,
- );
- warn.name = "MaxListenersExceededWarning";
- warn.emitter = emitter;
- warn.type = type;
- warn.count = handlers.length;
- process.emitWarning(warn);
-}
-
-function onceWrapper(type, listener, ...args) {
- this.removeListener(type, listener);
- listener.apply(this, args);
-}
-
-EventEmitter.prototype.once = function once(type, fn) {
- checkListener(fn);
- const bound = onceWrapper.bind(this, type, fn);
- bound.listener = fn;
- this.addListener(type, bound);
- return this;
-};
-
-EventEmitter.prototype.prependOnceListener = function prependOnceListener(type, fn) {
- checkListener(fn);
- const bound = onceWrapper.bind(this, type, fn);
- bound.listener = fn;
- this.prependListener(type, bound);
- return this;
-};
-
-EventEmitter.prototype.removeListener = function removeListener(type, fn) {
- checkListener(fn);
- var { _events: events } = this;
- if (!events) return this;
- var handlers = events[type];
- if (!handlers) return this;
- var length = handlers.length;
- let position = -1;
- for (let i = length - 1; i >= 0; i--) {
- if (handlers[i] === fn || handlers[i].listener === fn) {
- position = i;
- break;
- }
- }
- if (position < 0) return this;
- if (position === 0) {
- handlers.shift();
- } else {
- handlers.splice(position, 1);
- }
- if (handlers.length === 0) {
- delete events[type];
- this._eventsCount--;
- }
- return this;
-};
-
-EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
-
-EventEmitter.prototype.removeAllListeners = function removeAllListeners(type) {
- var { _events: events } = this;
- if (type && events) {
- if (events[type]) {
- delete events[type];
- this._eventsCount--;
- }
- } else {
- this._events = { __proto__: null };
- }
- return this;
-};
-
-EventEmitter.prototype.listeners = function listeners(type) {
- var { _events: events } = this;
- if (!events) return [];
- var handlers = events[type];
- if (!handlers) return [];
- return handlers.map(x => x.listener ?? x);
-};
-
-EventEmitter.prototype.rawListeners = function rawListeners(type) {
- var { _events } = this;
- if (!_events) return [];
- var handlers = _events[type];
- if (!handlers) return [];
- return handlers.slice();
-};
-
-EventEmitter.prototype.listenerCount = function listenerCount(type) {
- var { _events: events } = this;
- if (!events) return 0;
- return events[type]?.length ?? 0;
-};
-
-EventEmitter.prototype.eventNames = function eventNames() {
- return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : [];
-};
-
-EventEmitter.prototype[kCapture] = false;
-
-function once(emitter, type, { signal } = {}) {
- validateAbortSignal(signal, "options.signal");
- if (signal?.aborted) {
- throw new AbortError(undefined, { cause: signal?.reason });
- }
- return new Promise((resolve, reject) => {
- const errorListener = err => {
- emitter.removeListener(type, resolver);
- if (signal != null) {
- eventTargetAgnosticRemoveListener(signal, "abort", abortListener);
- }
- reject(err);
- };
- const resolver = (...args) => {
- if (typeof emitter.removeListener === "function") {
- emitter.removeListener("error", errorListener);
- }
- if (signal != null) {
- eventTargetAgnosticRemoveListener(signal, "abort", abortListener);
- }
- resolve(args);
- };
- eventTargetAgnosticAddListener(emitter, type, resolver, { once: true });
- if (type !== "error" && typeof emitter.once === "function") {
- // EventTarget does not have `error` event semantics like Node
- // EventEmitters, we listen to `error` events only on EventEmitters.
- emitter.once("error", errorListener);
- }
- function abortListener() {
- eventTargetAgnosticRemoveListener(emitter, type, resolver);
- eventTargetAgnosticRemoveListener(emitter, "error", errorListener);
- reject(new AbortError(undefined, { cause: signal?.reason }));
- }
- if (signal != null) {
- eventTargetAgnosticAddListener(signal, "abort", abortListener, { once: true });
- }
- });
-}
-EventEmitter.once = once;
-
-function on(emitter, type, { signal, close, highWatermark = Number.MAX_SAFE_INTEGER, lowWatermark = 1 } = {}) {
- throw new Error("events.on is not implemented. See https://github.com/oven-sh/bun/issues/2679");
-}
-EventEmitter.on = on;
-
-function getEventListeners(emitter, type) {
- if (emitter instanceof EventTarget) {
- throw new Error(
- "getEventListeners with an EventTarget is not implemented. See https://github.com/oven-sh/bun/issues/2678",
- );
- }
- return emitter.listeners(type);
-}
-EventEmitter.getEventListeners = getEventListeners;
-
-function setMaxListeners(n, ...eventTargets) {
- validateNumber(n, "setMaxListeners", 0);
- var length;
- if (eventTargets && (length = eventTargets.length)) {
- for (let i = 0; i < length; i++) {
- eventTargets[i].setMaxListeners(n);
- }
- } else {
- defaultMaxListeners = n;
- }
-}
-EventEmitter.setMaxListeners = setMaxListeners;
-
-function listenerCount(emitter, type) {
- return emitter.listenerCount(type);
-}
-EventEmitter.listenerCount = listenerCount;
-
-EventEmitter.EventEmitter = EventEmitter;
-EventEmitter.usingDomains = false;
-EventEmitter.captureRejectionSymbol = captureRejectionSymbol;
-ObjectDefineProperty(EventEmitter, "captureRejections", {
- __proto__: null,
- get() {
- return EventEmitter.prototype[kCapture];
- },
- set(value) {
- validateBoolean(value, "EventEmitter.captureRejections");
-
- EventEmitter.prototype[kCapture] = value;
- },
- enumerable: true,
-});
-EventEmitter.errorMonitor = kErrorMonitor;
-Object.defineProperties(EventEmitter, {
- defaultMaxListeners: {
- enumerable: true,
- get: () => {
- return defaultMaxListeners;
- },
- set: arg => {
- validateNumber(arg, "defaultMaxListeners", 0);
- defaultMaxListeners = arg;
- },
- },
- kMaxEventTargetListeners: {
- __proto__: null,
- value: kMaxEventTargetListeners,
- enumerable: false,
- configurable: false,
- writable: false,
- },
- kMaxEventTargetListenersWarned: {
- __proto__: null,
- value: kMaxEventTargetListenersWarned,
- enumerable: false,
- configurable: false,
- writable: false,
- },
-});
-EventEmitter.init = EventEmitter;
-EventEmitter[Symbol.for("CommonJS")] = 0;
-
-export default EventEmitter;
-
-function eventTargetAgnosticRemoveListener(emitter, name, listener, flags) {
- if (typeof emitter.removeListener === "function") {
- emitter.removeListener(name, listener);
- } else {
- emitter.removeEventListener(name, listener, flags);
- }
-}
-
-function eventTargetAgnosticAddListener(emitter, name, listener, flags) {
- if (typeof emitter.on === "function") {
- emitter.on(name, listener);
- } else {
- emitter.addEventListener(name, listener);
- }
-}
-
-class AbortError extends Error {
- constructor(message = "The operation was aborted", options = undefined) {
- if (options !== undefined && typeof options !== "object") {
- throw new codes.ERR_INVALID_ARG_TYPE("options", "Object", options);
- }
- super(message, options);
- this.code = "ABORT_ERR";
- this.name = "AbortError";
- }
-}
-
-function ERR_INVALID_ARG_TYPE(name, type, value) {
- const err = new TypeError(`The "${name}" argument must be of type ${type}. Received ${value}`);
- err.code = "ERR_INVALID_ARG_TYPE";
- return err;
-}
-
-function ERR_OUT_OF_RANGE(name, range, value) {
- const err = new RangeError(`The "${name}" argument is out of range. It must be ${range}. Received ${value}`);
- err.code = "ERR_OUT_OF_RANGE";
- return err;
-}
-
-function validateAbortSignal(signal, name) {
- if (signal !== undefined && (signal === null || typeof signal !== "object" || !("aborted" in signal))) {
- throw new ERR_INVALID_ARG_TYPE(name, "AbortSignal", signal);
- }
-}
-
-function validateNumber(value, name, min = undefined, max) {
- if (typeof value !== "number") throw new ERR_INVALID_ARG_TYPE(name, "number", value);
- if (
- (min != null && value < min) ||
- (max != null && value > max) ||
- ((min != null || max != null) && Number.isNaN(value))
- ) {
- throw new ERR_OUT_OF_RANGE(
- name,
- `${min != null ? `>= ${min}` : ""}${min != null && max != null ? " && " : ""}${max != null ? `<= ${max}` : ""}`,
- value,
- );
- }
-}
-
-function checkListener(listener) {
- if (typeof listener !== "function") {
- throw new TypeError("The listener must be a function");
- }
-}
-
-export class EventEmitterAsyncResource extends EventEmitter {
- constructor(options = undefined) {
- throw new Error("EventEmitterAsyncResource is not implemented. See https://github.com/oven-sh/bun/issues/2681");
- }
-}
-
-EventEmitter.EventEmitterAsyncResource = EventEmitterAsyncResource;
diff --git a/src/bun.js/module_loader.zig b/src/bun.js/module_loader.zig
index 127bc85e3..ede5622dc 100644
--- a/src/bun.js/module_loader.zig
+++ b/src/bun.js/module_loader.zig
@@ -1712,15 +1712,7 @@ pub const ModuleLoader = struct {
.@"node:buffer" => return jsSyntheticModule(.@"node:buffer"),
.@"node:string_decoder" => return jsSyntheticModule(.@"node:string_decoder"),
.@"node:module" => return jsSyntheticModule(.@"node:module"),
- .@"node:events" => {
- return ResolvedSource{
- .allocator = null,
- .source_code = ZigString.init(jsModuleFromFile(jsc_vm.load_builtins_from_path, "events.exports.js")),
- .specifier = ZigString.init("node:events"),
- .source_url = ZigString.init("node:events"),
- .hash = 0,
- };
- },
+ .@"node:events" => return jsSyntheticModule(.@"node:events"),
.@"node:process" => return jsSyntheticModule(.@"node:process"),
.@"node:tty" => return jsSyntheticModule(.@"node:tty"),
.@"node:util/types" => return jsSyntheticModule(.@"node:util/types"),
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-02 19:18:59 +0000