352 lines
No EOL
11 KiB
JavaScript
Executable file
352 lines
No EOL
11 KiB
JavaScript
Executable file
"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));
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function _createForOfIteratorHelper(o, allowArrayLike) { var it; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } 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 normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }
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function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
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function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
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const Path = require('path');
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const crypto = require('crypto');
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/**
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* A Bundle represents an output file, containing multiple assets. Bundles can have
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* child bundles, which are bundles that are loaded dynamically from this bundle.
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* Child bundles are also produced when importing an asset of a different type from
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* the bundle, e.g. importing a CSS file from JS.
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*/
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class Bundle {
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constructor(type, name, parent, options = {}) {
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this.type = type;
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this.name = name;
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this.parentBundle = parent;
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this.entryAsset = null;
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this.assets = new Set();
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this.childBundles = new Set();
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this.siblingBundles = new Set();
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this.siblingBundlesMap = new Map();
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this.offsets = new Map();
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this.totalSize = 0;
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this.bundleTime = 0;
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this.isolated = options.isolated;
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}
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static createWithAsset(asset, parentBundle, options) {
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let bundle = new Bundle(asset.type, Path.join(asset.options.outDir, asset.generateBundleName()), parentBundle, options);
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bundle.entryAsset = asset;
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bundle.addAsset(asset);
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return bundle;
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}
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addAsset(asset) {
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asset.bundles.add(this);
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this.assets.add(asset);
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if (this.type != 'map' && this.type == asset.type && asset.options.sourceMaps && asset.sourceMaps) {
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this.getSiblingBundle('map').addAsset(asset);
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}
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}
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removeAsset(asset) {
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asset.bundles.delete(this);
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this.assets.delete(asset);
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}
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addOffset(asset, line, column = 0) {
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this.offsets.set(asset, [line, column]);
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}
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getOffset(asset) {
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return this.offsets.get(asset) || [0, 0];
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}
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getSiblingBundle(type) {
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if (!type || type === this.type) {
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return this;
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}
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if (!this.siblingBundlesMap.has(type)) {
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let bundle = new Bundle(type, Path.join(Path.dirname(this.name), // keep the original extension for source map files, so we have
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// .js.map instead of just .map
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type === 'map' ? Path.basename(this.name) + '.' + type : Path.basename(this.name, Path.extname(this.name)) + '.' + type), this);
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this.childBundles.add(bundle);
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this.siblingBundles.add(bundle);
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this.siblingBundlesMap.set(type, bundle);
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}
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return this.siblingBundlesMap.get(type);
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}
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createChildBundle(entryAsset, options = {}) {
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let bundle = Bundle.createWithAsset(entryAsset, this, options);
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this.childBundles.add(bundle);
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return bundle;
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}
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createSiblingBundle(entryAsset, options = {}) {
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let bundle = this.createChildBundle(entryAsset, options);
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this.siblingBundles.add(bundle);
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return bundle;
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}
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get isEmpty() {
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return this.assets.size === 0;
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}
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getBundleNameMap(contentHash, hashes = new Map()) {
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if (this.name) {
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let hashedName = this.getHashedBundleName(contentHash);
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hashes.set(Path.basename(this.name), hashedName);
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this.name = Path.join(Path.dirname(this.name), hashedName);
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}
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var _iterator = _createForOfIteratorHelper(this.childBundles.values()),
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_step;
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try {
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for (_iterator.s(); !(_step = _iterator.n()).done;) {
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let child = _step.value;
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child.getBundleNameMap(contentHash, hashes);
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}
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} catch (err) {
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_iterator.e(err);
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} finally {
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_iterator.f();
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}
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return hashes;
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}
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getHashedBundleName(contentHash) {
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// If content hashing is enabled, generate a hash from all assets in the bundle.
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// Otherwise, use a hash of the filename so it remains consistent across builds.
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if (this.type == 'map') {
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return this.parentBundle.getHashedBundleName(contentHash) + '.map';
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}
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let basename = Path.basename(this.name);
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let ext = Path.extname(basename);
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let hash = (contentHash ? this.getHash() : Path.basename(this.name, ext)).slice(-8);
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let entryAsset = this;
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while (!entryAsset.entryAsset && entryAsset.parentBundle) {
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entryAsset = entryAsset.parentBundle;
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}
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entryAsset = entryAsset.entryAsset;
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let name = Path.basename(entryAsset.name, Path.extname(entryAsset.name));
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let isMainEntry = entryAsset.options.entryFiles[0] === entryAsset.name;
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let isEntry = entryAsset.options.entryFiles.includes(entryAsset.name) || Array.from(entryAsset.parentDeps).some(dep => dep.entry); // If this is the main entry file, use the output file option as the name if provided.
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if (isMainEntry && entryAsset.options.outFile) {
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let extname = Path.extname(entryAsset.options.outFile);
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if (extname) {
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ext = this.entryAsset ? extname : ext;
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name = Path.basename(entryAsset.options.outFile, extname);
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} else {
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name = entryAsset.options.outFile;
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}
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} // If this is an entry asset, don't hash. Return a relative path
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// from the main file so we keep the original file paths.
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if (isEntry) {
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return Path.join(Path.relative(entryAsset.options.rootDir, Path.dirname(entryAsset.name)), name + ext).replace(/\.\.(\/|\\)/g, '__$1');
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} // If this is an index file, use the parent directory name instead
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// which is probably more descriptive.
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if (name === 'index') {
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name = Path.basename(Path.dirname(entryAsset.name));
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} // Add the content hash and extension.
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return name + '.' + hash + ext;
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}
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package(bundler, oldHashes, newHashes = new Map()) {
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var _this = this;
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return (0, _asyncToGenerator2.default)(function* () {
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let promises = [];
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let mappings = [];
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if (!_this.isEmpty) {
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let hash = _this.getHash();
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newHashes.set(_this.name, hash);
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if (!oldHashes || oldHashes.get(_this.name) !== hash) {
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promises.push(_this._package(bundler));
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}
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}
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var _iterator2 = _createForOfIteratorHelper(_this.childBundles.values()),
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_step2;
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try {
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for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
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let bundle = _step2.value;
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if (bundle.type === 'map') {
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mappings.push(bundle);
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} else {
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promises.push(bundle.package(bundler, oldHashes, newHashes));
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}
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}
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} catch (err) {
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_iterator2.e(err);
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} finally {
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_iterator2.f();
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}
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yield Promise.all(promises);
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for (var _i = 0, _mappings = mappings; _i < _mappings.length; _i++) {
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let bundle = _mappings[_i];
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yield bundle.package(bundler, oldHashes, newHashes);
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}
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return newHashes;
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})();
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}
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_package(bundler) {
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var _this2 = this;
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return (0, _asyncToGenerator2.default)(function* () {
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let Packager = bundler.packagers.get(_this2.type);
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let packager = new Packager(_this2, bundler);
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let startTime = Date.now();
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yield packager.setup();
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yield packager.start();
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let included = new Set();
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var _iterator3 = _createForOfIteratorHelper(_this2.assets),
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_step3;
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try {
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for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
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let asset = _step3.value;
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yield _this2._addDeps(asset, packager, included);
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}
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} catch (err) {
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_iterator3.e(err);
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} finally {
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_iterator3.f();
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}
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yield packager.end();
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_this2.totalSize = packager.getSize();
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let assetArray = Array.from(_this2.assets);
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let assetStartTime = _this2.type === 'map' ? 0 : assetArray.sort((a, b) => a.startTime - b.startTime)[0].startTime;
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let assetEndTime = _this2.type === 'map' ? 0 : assetArray.sort((a, b) => b.endTime - a.endTime)[0].endTime;
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let packagingTime = Date.now() - startTime;
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_this2.bundleTime = assetEndTime - assetStartTime + packagingTime;
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})();
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}
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_addDeps(asset, packager, included) {
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var _this3 = this;
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return (0, _asyncToGenerator2.default)(function* () {
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if (!_this3.assets.has(asset) || included.has(asset)) {
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return;
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}
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included.add(asset);
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var _iterator4 = _createForOfIteratorHelper(asset.depAssets.values()),
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_step4;
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try {
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for (_iterator4.s(); !(_step4 = _iterator4.n()).done;) {
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let depAsset = _step4.value;
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yield _this3._addDeps(depAsset, packager, included);
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}
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} catch (err) {
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_iterator4.e(err);
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} finally {
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_iterator4.f();
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}
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yield packager.addAsset(asset);
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const assetSize = packager.getSize() - _this3.totalSize;
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if (assetSize > 0) {
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_this3.addAssetSize(asset, assetSize);
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}
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})();
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}
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addAssetSize(asset, size) {
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asset.bundledSize = size;
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this.totalSize += size;
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}
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getParents() {
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let parents = [];
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let bundle = this;
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while (bundle) {
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parents.push(bundle);
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bundle = bundle.parentBundle;
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}
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return parents;
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}
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findCommonAncestor(bundle) {
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// Get a list of parent bundles going up to the root
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let ourParents = this.getParents();
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let theirParents = bundle.getParents(); // Start from the root bundle, and find the first bundle that's different
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let a = ourParents.pop();
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let b = theirParents.pop();
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let last;
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while (a === b && ourParents.length > 0 && theirParents.length > 0) {
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last = a;
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a = ourParents.pop();
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b = theirParents.pop();
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}
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if (a === b) {
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// One bundle descended from the other
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return a;
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}
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return last;
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}
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getHash() {
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let hash = crypto.createHash('md5');
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var _iterator5 = _createForOfIteratorHelper(this.assets),
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_step5;
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try {
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for (_iterator5.s(); !(_step5 = _iterator5.n()).done;) {
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let asset = _step5.value;
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hash.update(asset.hash);
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}
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} catch (err) {
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_iterator5.e(err);
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} finally {
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_iterator5.f();
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}
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return hash.digest('hex');
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}
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}
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module.exports = Bundle; |