601 lines
19 KiB
JavaScript
601 lines
19 KiB
JavaScript
"use strict";
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.default = void 0;
|
|
|
|
var path = _interopRequireWildcard(require("path"));
|
|
|
|
var os = _interopRequireWildcard(require("os"));
|
|
|
|
var _sourceMap = require("source-map");
|
|
|
|
var _schemaUtils = require("schema-utils");
|
|
|
|
var _serializeJavascript = _interopRequireDefault(require("serialize-javascript"));
|
|
|
|
var terserPackageJson = _interopRequireWildcard(require("terser/package.json"));
|
|
|
|
var _pLimit = _interopRequireDefault(require("p-limit"));
|
|
|
|
var _jestWorker = _interopRequireDefault(require("jest-worker"));
|
|
|
|
var schema = _interopRequireWildcard(require("./options.json"));
|
|
|
|
var _minify = require("./minify");
|
|
|
|
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
|
|
|
|
function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
|
|
|
|
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
|
|
|
|
/** @typedef {import("schema-utils/declarations/validate").Schema} Schema */
|
|
|
|
/** @typedef {import("webpack").Compiler} Compiler */
|
|
|
|
/** @typedef {import("webpack").Compilation} Compilation */
|
|
|
|
/** @typedef {import("webpack").Rules} Rules */
|
|
|
|
/** @typedef {import("webpack").WebpackError} WebpackError */
|
|
|
|
/** @typedef {import("webpack").Asset} Asset */
|
|
|
|
/** @typedef {import("webpack").AssetInfo} AssetInfo */
|
|
|
|
/** @typedef {import("terser").ECMA} TerserECMA */
|
|
|
|
/** @typedef {import("terser").MinifyOptions} TerserMinifyOptions */
|
|
|
|
/** @typedef {import("jest-worker").default} JestWorker */
|
|
|
|
/** @typedef {import("source-map").RawSourceMap} RawSourceMap */
|
|
|
|
/** @typedef {import("./minify.js").InternalMinifyOptions} InternalMinifyOptions */
|
|
|
|
/** @typedef {import("./minify.js").InternalMinifyResult} InternalMinifyResult */
|
|
|
|
/** @typedef {JestWorker & { transform: (options: string) => InternalMinifyResult, minify: (options: InternalMinifyOptions) => InternalMinifyResult }} MinifyWorker */
|
|
|
|
/** @typedef {Object.<any, any> | TerserMinifyOptions} MinifyOptions */
|
|
|
|
/**
|
|
* @callback ExtractCommentsFunction
|
|
* @param {any} astNode
|
|
* @param {{ value: string, type: 'comment1' | 'comment2' | 'comment3' | 'comment4', pos: number, line: number, col: number }} comment
|
|
* @returns {boolean}
|
|
*/
|
|
|
|
/**
|
|
* @typedef {boolean | string | RegExp | ExtractCommentsFunction} ExtractCommentsCondition
|
|
*/
|
|
|
|
/**
|
|
* @typedef {string | ((fileData: any) => string)} ExtractCommentsFilename
|
|
*/
|
|
|
|
/**
|
|
* @typedef {boolean | string | ((commentsFile: string) => string)} ExtractCommentsBanner
|
|
*/
|
|
|
|
/**
|
|
* @typedef {Object} ExtractCommentsObject
|
|
* @property {ExtractCommentsCondition} condition
|
|
* @property {ExtractCommentsFilename} filename
|
|
* @property {ExtractCommentsBanner} banner
|
|
*/
|
|
|
|
/**
|
|
* @callback CustomMinifyFunction
|
|
* @param {Object.<string, string>} file
|
|
* @param {RawSourceMap | undefined} sourceMap
|
|
* @param {MinifyOptions} minifyOptions
|
|
*/
|
|
|
|
/**
|
|
* @typedef {ExtractCommentsCondition | ExtractCommentsObject} ExtractCommentsOptions
|
|
*/
|
|
|
|
/**
|
|
* @typedef {Object} TerserPluginOptions
|
|
* @property {Rules} [test]
|
|
* @property {Rules} [include]
|
|
* @property {Rules} [exclude]
|
|
* @property {MinifyOptions} [terserOptions]
|
|
* @property {ExtractCommentsOptions} [extractComments]
|
|
* @property {boolean} [parallel]
|
|
* @property {CustomMinifyFunction} [minify]
|
|
*/
|
|
class TerserPlugin {
|
|
/**
|
|
* @param {TerserPluginOptions} options
|
|
*/
|
|
constructor(options = {}) {
|
|
(0, _schemaUtils.validate)(
|
|
/** @type {Schema} */
|
|
schema, options, {
|
|
name: "Terser Plugin",
|
|
baseDataPath: "options"
|
|
});
|
|
const {
|
|
minify,
|
|
terserOptions = {},
|
|
test = /\.[cm]?js(\?.*)?$/i,
|
|
extractComments = true,
|
|
parallel = true,
|
|
include,
|
|
exclude
|
|
} = options;
|
|
this.options = {
|
|
test,
|
|
extractComments,
|
|
parallel,
|
|
include,
|
|
exclude,
|
|
minify,
|
|
terserOptions
|
|
};
|
|
}
|
|
/**
|
|
* @private
|
|
* @param {any} input
|
|
* @returns {boolean}
|
|
*/
|
|
|
|
|
|
static isSourceMap(input) {
|
|
// All required options for `new SourceMapConsumer(...options)`
|
|
// https://github.com/mozilla/source-map#new-sourcemapconsumerrawsourcemap
|
|
return Boolean(input && input.version && input.sources && Array.isArray(input.sources) && typeof input.mappings === "string");
|
|
}
|
|
/**
|
|
* @private
|
|
* @param {Error & { line: number, col: number}} error
|
|
* @param {string} file
|
|
* @param {Compilation["requestShortener"]} [requestShortener]
|
|
* @param {SourceMapConsumer} [sourceMap]
|
|
* @returns {WebpackError}
|
|
*/
|
|
|
|
|
|
static buildError(error, file, requestShortener, sourceMap) {
|
|
if (error.line) {
|
|
const original = sourceMap && sourceMap.originalPositionFor({
|
|
line: error.line,
|
|
column: error.col
|
|
});
|
|
|
|
if (original && original.source && requestShortener) {
|
|
return new Error(`${file} from Terser\n${error.message} [${requestShortener.shorten(original.source)}:${original.line},${original.column}][${file}:${error.line},${error.col}]${error.stack ? `\n${error.stack.split("\n").slice(1).join("\n")}` : ""}`);
|
|
}
|
|
|
|
return new Error(`${file} from Terser\n${error.message} [${file}:${error.line},${error.col}]${error.stack ? `\n${error.stack.split("\n").slice(1).join("\n")}` : ""}`);
|
|
}
|
|
|
|
if (error.stack) {
|
|
return new Error(`${file} from Terser\n${error.stack}`);
|
|
}
|
|
|
|
return new Error(`${file} from Terser\n${error.message}`);
|
|
}
|
|
/**
|
|
* @private
|
|
* @param {boolean} parallel
|
|
* @returns {number}
|
|
*/
|
|
|
|
|
|
static getAvailableNumberOfCores(parallel) {
|
|
// In some cases cpus() returns undefined
|
|
// https://github.com/nodejs/node/issues/19022
|
|
const cpus = os.cpus() || {
|
|
length: 1
|
|
};
|
|
return parallel === true ? cpus.length - 1 : Math.min(Number(parallel) || 0, cpus.length - 1);
|
|
}
|
|
/**
|
|
* @param {Compiler} compiler
|
|
* @param {Compilation} compilation
|
|
* @param {Record<string, import("webpack").sources.Source>} assets
|
|
* @param {{availableNumberOfCores: number}} optimizeOptions
|
|
* @returns {Promise<void>}
|
|
*/
|
|
|
|
|
|
async optimize(compiler, compilation, assets, optimizeOptions) {
|
|
const cache = compilation.getCache("TerserWebpackPlugin");
|
|
let numberOfAssetsForMinify = 0;
|
|
const assetsForMinify = await Promise.all(Object.keys(assets).filter(name => {
|
|
const {
|
|
info
|
|
} = compilation.getAsset(name);
|
|
|
|
if ( // Skip double minimize assets from child compilation
|
|
info.minimized || // Skip minimizing for extracted comments assets
|
|
info.extractedComments) {
|
|
return false;
|
|
}
|
|
|
|
if (!compiler.webpack.ModuleFilenameHelpers.matchObject.bind( // eslint-disable-next-line no-undefined
|
|
undefined, this.options)(name)) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}).map(async name => {
|
|
const {
|
|
info,
|
|
source
|
|
} = compilation.getAsset(name);
|
|
const eTag = cache.getLazyHashedEtag(source);
|
|
const cacheItem = cache.getItemCache(name, eTag);
|
|
const output = await cacheItem.getPromise();
|
|
|
|
if (!output) {
|
|
numberOfAssetsForMinify += 1;
|
|
}
|
|
|
|
return {
|
|
name,
|
|
info,
|
|
inputSource: source,
|
|
output,
|
|
cacheItem
|
|
};
|
|
}));
|
|
/** @type {undefined | (() => MinifyWorker)} */
|
|
|
|
let getWorker;
|
|
/** @type {undefined | MinifyWorker} */
|
|
|
|
let initializedWorker;
|
|
/** @type {undefined | number} */
|
|
|
|
let numberOfWorkers;
|
|
|
|
if (optimizeOptions.availableNumberOfCores > 0) {
|
|
// Do not create unnecessary workers when the number of files is less than the available cores, it saves memory
|
|
numberOfWorkers = Math.min(numberOfAssetsForMinify, optimizeOptions.availableNumberOfCores); // eslint-disable-next-line consistent-return
|
|
|
|
getWorker = () => {
|
|
if (initializedWorker) {
|
|
return initializedWorker;
|
|
}
|
|
|
|
initializedWorker =
|
|
/** @type {MinifyWorker} */
|
|
new _jestWorker.default(require.resolve("./minify"), {
|
|
numWorkers: numberOfWorkers,
|
|
enableWorkerThreads: true
|
|
}); // https://github.com/facebook/jest/issues/8872#issuecomment-524822081
|
|
|
|
const workerStdout = initializedWorker.getStdout();
|
|
|
|
if (workerStdout) {
|
|
workerStdout.on("data", chunk => process.stdout.write(chunk));
|
|
}
|
|
|
|
const workerStderr = initializedWorker.getStderr();
|
|
|
|
if (workerStderr) {
|
|
workerStderr.on("data", chunk => process.stderr.write(chunk));
|
|
}
|
|
|
|
return initializedWorker;
|
|
};
|
|
}
|
|
|
|
const limit = (0, _pLimit.default)(getWorker && numberOfAssetsForMinify > 0 ?
|
|
/** @type {number} */
|
|
numberOfWorkers : Infinity);
|
|
const {
|
|
SourceMapSource,
|
|
ConcatSource,
|
|
RawSource
|
|
} = compiler.webpack.sources;
|
|
const allExtractedComments = new Map();
|
|
const scheduledTasks = [];
|
|
|
|
for (const asset of assetsForMinify) {
|
|
scheduledTasks.push(limit(async () => {
|
|
const {
|
|
name,
|
|
inputSource,
|
|
info,
|
|
cacheItem
|
|
} = asset;
|
|
let {
|
|
output
|
|
} = asset;
|
|
|
|
if (!output) {
|
|
let input;
|
|
/** @type {RawSourceMap | undefined} */
|
|
|
|
let inputSourceMap;
|
|
const {
|
|
source: sourceFromInputSource,
|
|
map
|
|
} = inputSource.sourceAndMap();
|
|
input = sourceFromInputSource;
|
|
|
|
if (map) {
|
|
if (TerserPlugin.isSourceMap(map)) {
|
|
inputSourceMap =
|
|
/** @type {RawSourceMap} */
|
|
map;
|
|
} else {
|
|
inputSourceMap =
|
|
/** @type {RawSourceMap} */
|
|
map;
|
|
compilation.warnings.push(
|
|
/** @type {WebpackError} */
|
|
new Error(`${name} contains invalid source map`));
|
|
}
|
|
}
|
|
|
|
if (Buffer.isBuffer(input)) {
|
|
input = input.toString();
|
|
}
|
|
/** @type {InternalMinifyOptions} */
|
|
|
|
|
|
const options = {
|
|
name,
|
|
input,
|
|
inputSourceMap,
|
|
minify: this.options.minify,
|
|
minifyOptions: { ...this.options.terserOptions
|
|
},
|
|
extractComments: this.options.extractComments
|
|
};
|
|
|
|
if (typeof options.minifyOptions.module === "undefined") {
|
|
if (typeof info.javascriptModule !== "undefined") {
|
|
options.minifyOptions.module = info.javascriptModule;
|
|
} else if (/\.mjs(\?.*)?$/i.test(name)) {
|
|
options.minifyOptions.module = true;
|
|
} else if (/\.cjs(\?.*)?$/i.test(name)) {
|
|
options.minifyOptions.module = false;
|
|
}
|
|
}
|
|
|
|
try {
|
|
output = await (getWorker ? getWorker().transform((0, _serializeJavascript.default)(options)) : (0, _minify.minify)(options));
|
|
} catch (error) {
|
|
const hasSourceMap = inputSourceMap && TerserPlugin.isSourceMap(inputSourceMap);
|
|
compilation.errors.push(TerserPlugin.buildError(error, name, // eslint-disable-next-line no-undefined
|
|
hasSourceMap ? compilation.requestShortener : undefined, hasSourceMap ? new _sourceMap.SourceMapConsumer(
|
|
/** @type {RawSourceMap} */
|
|
inputSourceMap) : // eslint-disable-next-line no-undefined
|
|
undefined));
|
|
return;
|
|
}
|
|
|
|
let shebang;
|
|
|
|
if (
|
|
/** @type {ExtractCommentsObject} */
|
|
this.options.extractComments.banner !== false && output.extractedComments && output.extractedComments.length > 0 && output.code.startsWith("#!")) {
|
|
const firstNewlinePosition = output.code.indexOf("\n");
|
|
shebang = output.code.substring(0, firstNewlinePosition);
|
|
output.code = output.code.substring(firstNewlinePosition + 1);
|
|
}
|
|
|
|
if (output.map) {
|
|
output.source = new SourceMapSource(output.code, name, output.map, input,
|
|
/** @type {RawSourceMap} */
|
|
inputSourceMap, true);
|
|
} else {
|
|
output.source = new RawSource(output.code);
|
|
}
|
|
|
|
if (output.extractedComments && output.extractedComments.length > 0) {
|
|
const commentsFilename =
|
|
/** @type {ExtractCommentsObject} */
|
|
this.options.extractComments.filename || "[file].LICENSE.txt[query]";
|
|
let query = "";
|
|
let filename = name;
|
|
const querySplit = filename.indexOf("?");
|
|
|
|
if (querySplit >= 0) {
|
|
query = filename.substr(querySplit);
|
|
filename = filename.substr(0, querySplit);
|
|
}
|
|
|
|
const lastSlashIndex = filename.lastIndexOf("/");
|
|
const basename = lastSlashIndex === -1 ? filename : filename.substr(lastSlashIndex + 1);
|
|
const data = {
|
|
filename,
|
|
basename,
|
|
query
|
|
};
|
|
output.commentsFilename = compilation.getPath(commentsFilename, data);
|
|
let banner; // Add a banner to the original file
|
|
|
|
if (
|
|
/** @type {ExtractCommentsObject} */
|
|
this.options.extractComments.banner !== false) {
|
|
banner =
|
|
/** @type {ExtractCommentsObject} */
|
|
this.options.extractComments.banner || `For license information please see ${path.relative(path.dirname(name), output.commentsFilename).replace(/\\/g, "/")}`;
|
|
|
|
if (typeof banner === "function") {
|
|
banner = banner(output.commentsFilename);
|
|
}
|
|
|
|
if (banner) {
|
|
output.source = new ConcatSource(shebang ? `${shebang}\n` : "", `/*! ${banner} */\n`, output.source);
|
|
}
|
|
}
|
|
|
|
const extractedCommentsString = output.extractedComments.sort().join("\n\n");
|
|
output.extractedCommentsSource = new RawSource(`${extractedCommentsString}\n`);
|
|
}
|
|
|
|
await cacheItem.storePromise({
|
|
source: output.source,
|
|
commentsFilename: output.commentsFilename,
|
|
extractedCommentsSource: output.extractedCommentsSource
|
|
});
|
|
}
|
|
/** @type {AssetInfo} */
|
|
|
|
|
|
const newInfo = {
|
|
minimized: true
|
|
};
|
|
const {
|
|
source,
|
|
extractedCommentsSource
|
|
} = output; // Write extracted comments to commentsFilename
|
|
|
|
if (extractedCommentsSource) {
|
|
const {
|
|
commentsFilename
|
|
} = output;
|
|
newInfo.related = {
|
|
license: commentsFilename
|
|
};
|
|
allExtractedComments.set(name, {
|
|
extractedCommentsSource,
|
|
commentsFilename
|
|
});
|
|
}
|
|
|
|
compilation.updateAsset(name, source, newInfo);
|
|
}));
|
|
}
|
|
|
|
await Promise.all(scheduledTasks);
|
|
|
|
if (initializedWorker) {
|
|
await initializedWorker.end();
|
|
}
|
|
|
|
await Array.from(allExtractedComments).sort().reduce(
|
|
/**
|
|
* @param {Promise<any>} previousPromise
|
|
* @param {any} extractedComments
|
|
* @returns {Promise<any>}
|
|
*/
|
|
async (previousPromise, [from, value]) => {
|
|
const previous = await previousPromise;
|
|
const {
|
|
commentsFilename,
|
|
extractedCommentsSource
|
|
} = value;
|
|
|
|
if (previous && previous.commentsFilename === commentsFilename) {
|
|
const {
|
|
from: previousFrom,
|
|
source: prevSource
|
|
} = previous;
|
|
const mergedName = `${previousFrom}|${from}`;
|
|
const name = `${commentsFilename}|${mergedName}`;
|
|
const eTag = [prevSource, extractedCommentsSource].map(item => cache.getLazyHashedEtag(item)).reduce((previousValue, currentValue) => cache.mergeEtags(previousValue, currentValue));
|
|
let source = await cache.getPromise(name, eTag);
|
|
|
|
if (!source) {
|
|
source = new ConcatSource(Array.from(new Set([...prevSource.source().split("\n\n"), ...extractedCommentsSource.source().split("\n\n")])).join("\n\n"));
|
|
await cache.storePromise(name, eTag, source);
|
|
}
|
|
|
|
compilation.updateAsset(commentsFilename, source);
|
|
return {
|
|
commentsFilename,
|
|
from: mergedName,
|
|
source
|
|
};
|
|
}
|
|
|
|
const existingAsset = compilation.getAsset(commentsFilename);
|
|
|
|
if (existingAsset) {
|
|
return {
|
|
commentsFilename,
|
|
from: commentsFilename,
|
|
source: existingAsset.source
|
|
};
|
|
}
|
|
|
|
compilation.emitAsset(commentsFilename, extractedCommentsSource, {
|
|
extractedComments: true
|
|
});
|
|
return {
|
|
commentsFilename,
|
|
from,
|
|
source: extractedCommentsSource
|
|
};
|
|
}, Promise.resolve());
|
|
}
|
|
/**
|
|
* @private
|
|
* @param {any} environment
|
|
* @returns {TerserECMA}
|
|
*/
|
|
|
|
|
|
static getEcmaVersion(environment) {
|
|
// ES 6th
|
|
if (environment.arrowFunction || environment.const || environment.destructuring || environment.forOf || environment.module) {
|
|
return 2015;
|
|
} // ES 11th
|
|
|
|
|
|
if (environment.bigIntLiteral || environment.dynamicImport) {
|
|
return 2020;
|
|
}
|
|
|
|
return 5;
|
|
}
|
|
/**
|
|
* @param {Compiler} compiler
|
|
* @returns {void}
|
|
*/
|
|
|
|
|
|
apply(compiler) {
|
|
const {
|
|
output
|
|
} = compiler.options;
|
|
|
|
if (typeof this.options.terserOptions.ecma === "undefined") {
|
|
this.options.terserOptions.ecma = TerserPlugin.getEcmaVersion(output.environment || {});
|
|
}
|
|
|
|
const pluginName = this.constructor.name;
|
|
const availableNumberOfCores = TerserPlugin.getAvailableNumberOfCores(this.options.parallel);
|
|
compiler.hooks.compilation.tap(pluginName, compilation => {
|
|
const hooks = compiler.webpack.javascript.JavascriptModulesPlugin.getCompilationHooks(compilation);
|
|
const data = (0, _serializeJavascript.default)({
|
|
terser: terserPackageJson.version,
|
|
terserOptions: this.options.terserOptions
|
|
});
|
|
hooks.chunkHash.tap(pluginName, (chunk, hash) => {
|
|
hash.update("TerserPlugin");
|
|
hash.update(data);
|
|
});
|
|
compilation.hooks.processAssets.tapPromise({
|
|
name: pluginName,
|
|
stage: compiler.webpack.Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_SIZE,
|
|
additionalAssets: true
|
|
}, assets => this.optimize(compiler, compilation, assets, {
|
|
availableNumberOfCores
|
|
}));
|
|
compilation.hooks.statsPrinter.tap(pluginName, stats => {
|
|
stats.hooks.print.for("asset.info.minimized").tap("terser-webpack-plugin", (minimized, {
|
|
green,
|
|
formatFlag
|
|
}) => // eslint-disable-next-line no-undefined
|
|
minimized ? green(formatFlag("minimized")) : undefined);
|
|
});
|
|
});
|
|
}
|
|
|
|
}
|
|
|
|
var _default = TerserPlugin;
|
|
exports.default = _default; |