From fc40c690ea30a632a8d0d9490321c50ec898d8a5 Mon Sep 17 00:00:00 2001 From: dave caruso Date: Mon, 22 May 2023 18:51:05 -0700 Subject: Write out builtins with TypeScript + Minify them (#2999) * start work drafting how builtins will work * work on ts builtin * builtins stuff so far * builtins * done for today * continue work * working on it * bindings so far * well, it builds. doesnt run * IT RUNS * still lots of ts errors but it is functional * sloppy mode --- src/bun.js/builtins/codegen/replacements.ts | 100 ++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 src/bun.js/builtins/codegen/replacements.ts (limited to 'src/bun.js/builtins/codegen/replacements.ts') diff --git a/src/bun.js/builtins/codegen/replacements.ts b/src/bun.js/builtins/codegen/replacements.ts new file mode 100644 index 000000000..05c81b901 --- /dev/null +++ b/src/bun.js/builtins/codegen/replacements.ts @@ -0,0 +1,100 @@ +import { LoaderKeys } from "../../../api/schema"; + +// This is a list of extra syntax replacements to do. Kind of like macros +// These are only run on code itself, not string contents or comments. +export const replacements: ReplacementRule[] = [ + { from: /\bthrow new TypeError\b/g, to: "$throwTypeError" }, + { from: /\bthrow new RangeError\b/g, to: "$throwRangeError" }, + { from: /\bthrow new OutOfMemoryError\b/g, to: "$throwOutOfMemoryError" }, + { from: /\bnew TypeError\b/g, to: "$makeTypeError" }, +]; + +// These rules are run on the entire file, including within strings. +export const globalReplacements: ReplacementRule[] = [ + { + from: /\bnotImplementedIssue\(\s*([0-9]+)\s*,\s*((?:"[^"]*"|'[^']+'))\s*\)/g, + to: "new TypeError(`${$2} is not implemented yet. See https://github.com/oven-sh/bun/issues/$1`)", + }, + { + from: /\bnotImplementedIssueFn\(\s*([0-9]+)\s*,\s*((?:"[^"]*"|'[^']+'))\s*\)/g, + to: "() => $throwTypeError(`${$2} is not implemented yet. See https://github.com/oven-sh/bun/issues/$1`)", + }, +]; + +// This is a list of globals we should access using @ notation +// undefined -> __intrinsic__undefined -> @undefined +export const globalsToPrefix = [ + "AbortSignal", + "Array", + "ArrayBuffer", + "Buffer", + "Bun", + "Infinity", + "Loader", + "Promise", + "ReadableByteStreamController", + "ReadableStream", + "ReadableStreamBYOBReader", + "ReadableStreamBYOBRequest", + "ReadableStreamDefaultController", + "ReadableStreamDefaultReader", + "TransformStream", + "TransformStreamDefaultController", + "Uint8Array", + "WritableStream", + "WritableStreamDefaultController", + "WritableStreamDefaultWriter", + "isFinite", + "isNaN", + "undefined", +]; + +// These enums map to $IdToLabel and $LabelToId +// Make sure to define in ./builtins.d.ts +export const enums = { + Loader: LoaderKeys, + ImportKind: [ + "entry-point", + "import-statement", + "require-call", + "dynamic-import", + "require-resolve", + "import-rule", + "url-token", + "internal", + ], +}; + +// These identifiers have typedef but not present at runtime (converted with replacements) +// If they are present in the bundle after runtime, we warn at the user. +// TODO: implement this check. +export const warnOnIdentifiersNotPresentAtRuntime = [ + // + "OutOfMemoryError", + "notImplementedIssue", + "notImplementedIssueFn", +]; + +export interface ReplacementRule { + from: RegExp; + to: string; + global?: boolean; +} + +/** Applies source code replacements as defined in `replacements` */ +export function applyReplacements(src: string) { + let result = src.replace(/\$([a-zA-Z0-9_]+)\b/gm, `__intrinsic__$1`); + for (const replacement of replacements) { + result = result.replace(replacement.from, replacement.to.replaceAll("$", "__intrinsic__")); + } + return result; +} + +/** Applies source code replacements as defined in `globalReplacements` */ +export function applyGlobalReplacements(src: string) { + let result = src; + for (const replacement of globalReplacements) { + result = result.replace(replacement.from, replacement.to.replaceAll("$", "__intrinsic__")); + } + return result; +} -- cgit v1.2.3 fix-module-field-in-exports Unnamed repository; edit this file 'description' to name the repository.
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