Marc Mintel
5397309103
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121 lines
3.1 KiB
Plaintext
121 lines
3.1 KiB
Plaintext
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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/** @typedef {import("./CachedSource").CachedData} CachedData */
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/** @typedef {import("./CompatSource").SourceLike} SourceLike */
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/** @typedef {import("./ConcatSource").Child} ConcatSourceChild */
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/** @typedef {import("./ReplaceSource").Replacement} Replacement */
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/** @typedef {import("./Source").HashLike} HashLike */
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/** @typedef {import("./Source").MapOptions} MapOptions */
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/** @typedef {import("./Source").RawSourceMap} RawSourceMap */
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/** @typedef {import("./Source").SourceAndMap} SourceAndMap */
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/** @typedef {import("./Source").SourceValue} SourceValue */
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/** @typedef {import("./helpers/getGeneratedSourceInfo").GeneratedSourceInfo} GeneratedSourceInfo */
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/** @typedef {import("./helpers/streamChunks").OnChunk} OnChunk */
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/** @typedef {import("./helpers/streamChunks").OnName} OnName */
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/** @typedef {import("./helpers/streamChunks").OnSource} OnSource */
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/** @typedef {import("./helpers/streamChunks").Options} StreamChunksOptions */
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/**
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* @template T
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* @param {() => T} fn memorized function
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* @returns {() => T} new function
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*/
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const memoize = (fn) => {
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let cache = false;
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/** @type {T | undefined} */
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let result;
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return () => {
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if (cache) {
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return /** @type {T} */ (result);
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}
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result = fn();
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cache = true;
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// Allow to clean up memory for fn
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// and all dependent resources
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/** @type {(() => T) | undefined} */
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(fn) = undefined;
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return /** @type {T} */ (result);
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};
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};
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/**
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* @template A
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* @template B
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* @param {A} obj input a
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* @param {B} exports input b
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* @returns {A & B} merged
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*/
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const mergeExports = (obj, exports) => {
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const descriptors = Object.getOwnPropertyDescriptors(exports);
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for (const name of Object.keys(descriptors)) {
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const descriptor = descriptors[name];
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if (descriptor.get) {
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const fn = descriptor.get;
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Object.defineProperty(obj, name, {
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configurable: false,
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enumerable: true,
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get: memoize(fn),
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});
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} else if (typeof descriptor.value === "object") {
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Object.defineProperty(obj, name, {
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configurable: false,
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enumerable: true,
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writable: false,
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value: mergeExports({}, descriptor.value),
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});
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} else {
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throw new Error(
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"Exposed values must be either a getter or an nested object",
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);
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}
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}
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return /** @type {A & B} */ (Object.freeze(obj));
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};
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module.exports = mergeExports(
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{},
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{
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get Source() {
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return require("./Source");
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},
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get RawSource() {
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return require("./RawSource");
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},
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get OriginalSource() {
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return require("./OriginalSource");
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},
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get SourceMapSource() {
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return require("./SourceMapSource");
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},
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get CachedSource() {
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return require("./CachedSource");
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},
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get ConcatSource() {
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return require("./ConcatSource");
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},
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get ReplaceSource() {
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return require("./ReplaceSource");
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},
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get PrefixSource() {
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return require("./PrefixSource");
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},
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get SizeOnlySource() {
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return require("./SizeOnlySource");
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},
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get CompatSource() {
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return require("./CompatSource");
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},
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util: {
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get stringBufferUtils() {
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return require("./helpers/stringBufferUtils");
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},
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},
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},
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);
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