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uglifyjs-webpack-plugin

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uglifyjs-webpack-plugin - npm Package Compare versions

Comparing version 1.3.0 to 2.0.0

dist/minify.js
dist/TaskRunner.js
dist/worker.js

22

CHANGELOG.md

@@ -5,2 +5,24 @@ # Change Log

<a name="2.0.0"></a>
# [2.0.0](https://github.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v1.3.0...v2.0.0) (2018-09-14)
### Bug Fixes
* default extract comment condition is case insensitivity
### Features
* full coverage schema options validation
* enable inline optimization by default
### BREAKING CHANGES
* Switch back to [uglify-js](https://github.com/mishoo/UglifyJS2) (`uglify-es` is abandoned, if you need uglify ES6 code please use [terser-webpack-plugin](https://github.com/webpack-contrib/terser-webpack-plugin)).
* Changed function signature for `warningsFilter` option (now first argument is `warning`, second is `source`).
* Enforces `peerDependencies` of `"webpack": "^4.3.0`.
* Enforces `engines` of `"node": ">= 6.9.0 <7.0.0 || >= 8.9.0`
<a name="1.3.0"></a>

@@ -7,0 +29,0 @@ # [1.3.0](https://github.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v1.2.7...v1.3.0) (2018-08-14)

4

dist/cjs.js
'use strict';
module.exports = require('./index').default;
const plugin = require('./index');
module.exports = plugin.default;

477

dist/index.js

@@ -7,7 +7,2 @@ 'use strict';

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /* eslint-disable
no-param-reassign
*/
var _crypto = require('crypto');

@@ -41,45 +36,31 @@

var _Runner = require('./uglify/Runner');
var _TaskRunner = require('./TaskRunner');
var _Runner2 = _interopRequireDefault(_Runner);
var _TaskRunner2 = _interopRequireDefault(_TaskRunner);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
const warningRegex = /\[.+:([0-9]+),([0-9]+)\]/; /* eslint-disable
no-param-reassign
*/
var warningRegex = /\[.+:([0-9]+),([0-9]+)\]/;
var UglifyJsPlugin = function () {
function UglifyJsPlugin() {
var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
_classCallCheck(this, UglifyJsPlugin);
class UglifyJsPlugin {
constructor(options = {}) {
(0, _schemaUtils2.default)(_options2.default, options, 'UglifyJs Plugin');
var minify = options.minify,
_options$uglifyOption = options.uglifyOptions,
uglifyOptions = _options$uglifyOption === undefined ? {} : _options$uglifyOption,
_options$test = options.test,
test = _options$test === undefined ? /\.js(\?.*)?$/i : _options$test,
_options$warningsFilt = options.warningsFilter,
warningsFilter = _options$warningsFilt === undefined ? function () {
return true;
} : _options$warningsFilt,
_options$extractComme = options.extractComments,
extractComments = _options$extractComme === undefined ? false : _options$extractComme,
_options$sourceMap = options.sourceMap,
sourceMap = _options$sourceMap === undefined ? false : _options$sourceMap,
_options$cache = options.cache,
cache = _options$cache === undefined ? false : _options$cache,
_options$cacheKeys = options.cacheKeys,
cacheKeys = _options$cacheKeys === undefined ? function (defaultCacheKeys) {
return defaultCacheKeys;
} : _options$cacheKeys,
_options$parallel = options.parallel,
parallel = _options$parallel === undefined ? false : _options$parallel,
include = options.include,
exclude = options.exclude;
const {
minify,
uglifyOptions = {},
test = /\.js(\?.*)?$/i,
warningsFilter = () => true,
extractComments = false,
sourceMap = false,
cache = false,
cacheKeys = defaultCacheKeys => defaultCacheKeys,
parallel = false,
include,
exclude
} = options;
this.options = {

@@ -97,7 +78,4 @@ test,

uglifyOptions: Object.assign({
compress: {
inline: 1
},
output: {
comments: extractComments ? false : /^\**!|@preserve|@license|@cc_on/
comments: extractComments ? false : /^\**!|@preserve|@license|@cc_on/i
}

@@ -108,281 +86,250 @@ }, uglifyOptions)

_createClass(UglifyJsPlugin, [{
key: 'apply',
value: function apply(compiler) {
var _this = this;
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');
}
var buildModuleFn = function buildModuleFn(moduleArg) {
// to get detailed location info about errors
moduleArg.useSourceMap = true;
};
static buildSourceMap(inputSourceMap) {
if (!inputSourceMap || !UglifyJsPlugin.isSourceMap(inputSourceMap)) {
return null;
}
var optimizeFn = function optimizeFn(compilation, chunks, callback) {
var runner = new _Runner2.default({
cache: _this.options.cache,
parallel: _this.options.parallel
});
return new _sourceMap.SourceMapConsumer(inputSourceMap);
}
var uglifiedAssets = new WeakSet();
var tasks = [];
static buildError(err, file, sourceMap, requestShortener) {
// Handling error which should have line, col, filename and message
if (err.line) {
const original = sourceMap && sourceMap.originalPositionFor({
line: err.line,
column: err.col
});
chunks.reduce(function (acc, chunk) {
return acc.concat(chunk.files || []);
}, []).concat(compilation.additionalChunkAssets || []).filter(_ModuleFilenameHelpers2.default.matchObject.bind(null, _this.options)).forEach(function (file) {
var inputSourceMap = void 0;
if (original && original.source && requestShortener) {
return new Error(`${file} from UglifyJs\n${err.message} [${requestShortener.shorten(original.source)}:${original.line},${original.column}][${file}:${err.line},${err.col}]`);
}
var asset = compilation.assets[file];
return new Error(`${file} from UglifyJs\n${err.message} [${file}:${err.line},${err.col}]`);
} else if (err.stack) {
return new Error(`${file} from UglifyJs\n${err.stack}`);
}
if (uglifiedAssets.has(asset)) {
return;
}
return new Error(`${file} from UglifyJs\n${err.message}`);
}
try {
var input = void 0;
static buildWarning(warning, file, sourceMap, requestShortener, warningsFilter) {
let warningMessage = warning;
let locationMessage = '';
let source = null;
if (_this.options.sourceMap && asset.sourceAndMap) {
var _asset$sourceAndMap = asset.sourceAndMap(),
source = _asset$sourceAndMap.source,
map = _asset$sourceAndMap.map;
if (sourceMap) {
const match = warningRegex.exec(warning);
input = source;
if (match) {
const line = +match[1];
const column = +match[2];
const original = sourceMap.originalPositionFor({
line,
column
});
if (UglifyJsPlugin.isSourceMap(map)) {
inputSourceMap = map;
} else {
inputSourceMap = map;
if (original && original.source && original.source !== file && requestShortener) {
({ source } = original);
warningMessage = `${warningMessage.replace(warningRegex, '')}`;
compilation.warnings.push(new Error(`${file} contains invalid source map`));
}
} else {
input = asset.source();
inputSourceMap = null;
}
locationMessage = `[${requestShortener.shorten(original.source)}:${original.line},${original.column}]`;
}
}
}
// Handling comment extraction
var commentsFile = false;
if (warningsFilter && !warningsFilter(warning, source)) {
return null;
}
if (_this.options.extractComments) {
commentsFile = _this.options.extractComments.filename || `${file}.LICENSE`;
return `UglifyJs Plugin: ${warningMessage}${locationMessage}`;
}
if (typeof commentsFile === 'function') {
commentsFile = commentsFile(file);
}
}
apply(compiler) {
const buildModuleFn = moduleArg => {
// to get detailed location info about errors
moduleArg.useSourceMap = true;
};
var task = {
file,
input,
inputSourceMap,
commentsFile,
extractComments: _this.options.extractComments,
uglifyOptions: _this.options.uglifyOptions,
minify: _this.options.minify
};
const optimizeFn = (compilation, chunks, callback) => {
const taskRunner = new _TaskRunner2.default({
cache: this.options.cache,
parallel: this.options.parallel
});
if (_this.options.cache) {
var defaultCacheKeys = {
// eslint-disable-next-line global-require
'uglify-es': require('uglify-es/package.json').version,
// eslint-disable-next-line global-require
'uglifyjs-webpack-plugin': require('../package.json').version,
'uglifyjs-webpack-plugin-options': _this.options,
path: compiler.outputPath ? `${compiler.outputPath}/${file}` : file,
hash: _crypto2.default.createHash('md4').update(input).digest('hex')
};
const processedAssets = new WeakSet();
const tasks = [];
task.cacheKeys = _this.options.cacheKeys(defaultCacheKeys, file);
}
chunks.reduce((acc, chunk) => acc.concat(chunk.files || []), []).concat(compilation.additionalChunkAssets || []).filter(_ModuleFilenameHelpers2.default.matchObject.bind(null, this.options)).forEach(file => {
let inputSourceMap;
tasks.push(task);
} catch (error) {
compilation.errors.push(UglifyJsPlugin.buildError(error, file, UglifyJsPlugin.buildSourceMap(inputSourceMap), new _RequestShortener2.default(compiler.context)));
}
});
const asset = compilation.assets[file];
runner.runTasks(tasks, function (tasksError, results) {
if (tasksError) {
compilation.errors.push(tasksError);
if (processedAssets.has(asset)) {
return;
}
return;
}
try {
let input;
results.forEach(function (data, index) {
var _tasks$index = tasks[index],
file = _tasks$index.file,
input = _tasks$index.input,
inputSourceMap = _tasks$index.inputSourceMap,
commentsFile = _tasks$index.commentsFile;
var error = data.error,
map = data.map,
code = data.code,
warnings = data.warnings,
extractedComments = data.extractedComments;
if (this.options.sourceMap && asset.sourceAndMap) {
const { source, map } = asset.sourceAndMap();
input = source;
var sourceMap = null;
if (UglifyJsPlugin.isSourceMap(map)) {
inputSourceMap = map;
} else {
inputSourceMap = map;
if (error || warnings && warnings.length > 0) {
sourceMap = UglifyJsPlugin.buildSourceMap(inputSourceMap);
compilation.warnings.push(new Error(`${file} contains invalid source map`));
}
} else {
input = asset.source();
inputSourceMap = null;
}
// Handling results
// Error case: add errors, and go to next file
if (error) {
compilation.errors.push(UglifyJsPlugin.buildError(error, file, sourceMap, new _RequestShortener2.default(compiler.context)));
// Handling comment extraction
let commentsFile = false;
return;
}
if (this.options.extractComments) {
commentsFile = this.options.extractComments.filename || `${file}.LICENSE`;
var outputSource = void 0;
if (map) {
outputSource = new _webpackSources.SourceMapSource(code, file, JSON.parse(map), input, inputSourceMap);
} else {
outputSource = new _webpackSources.RawSource(code);
if (typeof commentsFile === 'function') {
commentsFile = commentsFile(file);
}
}
// Write extracted comments to commentsFile
if (commentsFile && extractedComments.length > 0) {
// Add a banner to the original file
if (_this.options.extractComments.banner !== false) {
var banner = _this.options.extractComments.banner || `For license information please see ${_path2.default.posix.basename(commentsFile)}`;
const task = {
file,
input,
inputSourceMap,
commentsFile,
extractComments: this.options.extractComments,
uglifyOptions: this.options.uglifyOptions,
minify: this.options.minify
};
if (typeof banner === 'function') {
banner = banner(commentsFile);
}
if (this.options.cache) {
const { outputPath } = compiler;
const defaultCacheKeys = {
// eslint-disable-next-line global-require
'uglify-js': require('uglify-js/package.json').version,
// eslint-disable-next-line global-require
'uglifyjs-webpack-plugin': require('../package.json').version,
'uglifyjs-webpack-plugin-options': this.options,
path: `${outputPath ? `${outputPath}/` : ''}${file}`,
hash: _crypto2.default.createHash('md4').update(input).digest('hex')
};
if (banner) {
outputSource = new _webpackSources.ConcatSource(`/*! ${banner} */\n`, outputSource);
}
}
task.cacheKeys = this.options.cacheKeys(defaultCacheKeys, file);
}
var commentsSource = new _webpackSources.RawSource(`${extractedComments.join('\n\n')}\n`);
tasks.push(task);
} catch (error) {
compilation.errors.push(UglifyJsPlugin.buildError(error, file, UglifyJsPlugin.buildSourceMap(inputSourceMap), new _RequestShortener2.default(compiler.context)));
}
});
if (commentsFile in compilation.assets) {
// commentsFile already exists, append new comments...
if (compilation.assets[commentsFile] instanceof _webpackSources.ConcatSource) {
compilation.assets[commentsFile].add('\n');
compilation.assets[commentsFile].add(commentsSource);
} else {
compilation.assets[commentsFile] = new _webpackSources.ConcatSource(compilation.assets[commentsFile], '\n', commentsSource);
}
} else {
compilation.assets[commentsFile] = commentsSource;
}
}
taskRunner.run(tasks, (tasksError, results) => {
if (tasksError) {
compilation.errors.push(tasksError);
// Updating assets
uglifiedAssets.add(compilation.assets[file] = outputSource);
return;
}
// Handling warnings
if (warnings && warnings.length > 0) {
warnings.forEach(function (warning) {
var builtWarning = UglifyJsPlugin.buildWarning(warning, file, sourceMap, _this.options.warningsFilter, new _RequestShortener2.default(compiler.context));
results.forEach((data, index) => {
const { file, input, inputSourceMap, commentsFile } = tasks[index];
const { error, map, code, warnings, extractedComments } = data;
if (builtWarning) {
compilation.warnings.push(builtWarning);
}
});
}
});
let sourceMap = null;
runner.exit();
if (error || warnings && warnings.length > 0) {
sourceMap = UglifyJsPlugin.buildSourceMap(inputSourceMap);
}
callback();
});
};
// Handling results
// Error case: add errors, and go to next file
if (error) {
compilation.errors.push(UglifyJsPlugin.buildError(error, file, sourceMap, new _RequestShortener2.default(compiler.context)));
/* istanbul ignore if */
if (compiler.hooks) {
var plugin = { name: 'UglifyJSPlugin' };
compiler.hooks.compilation.tap(plugin, function (compilation) {
if (_this.options.sourceMap) {
compilation.hooks.buildModule.tap(plugin, buildModuleFn);
return;
}
compilation.hooks.optimizeChunkAssets.tapAsync(plugin, optimizeFn.bind(_this, compilation));
});
} else {
compiler.plugin('compilation', function (compilation) {
if (_this.options.sourceMap) {
compilation.plugin('build-module', buildModuleFn);
let outputSource;
if (map) {
outputSource = new _webpackSources.SourceMapSource(code, file, JSON.parse(map), input, inputSourceMap);
} else {
outputSource = new _webpackSources.RawSource(code);
}
compilation.plugin('optimize-chunk-assets', optimizeFn.bind(_this, compilation));
});
}
}
}], [{
key: 'isSourceMap',
value: function 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');
}
}, {
key: 'buildSourceMap',
value: function buildSourceMap(inputSourceMap) {
if (!inputSourceMap || !UglifyJsPlugin.isSourceMap(inputSourceMap)) {
return null;
}
// Write extracted comments to commentsFile
if (commentsFile && extractedComments.length > 0) {
// Add a banner to the original file
if (this.options.extractComments.banner !== false) {
let banner = this.options.extractComments.banner || `For license information please see ${_path2.default.posix.basename(commentsFile)}`;
return new _sourceMap.SourceMapConsumer(inputSourceMap);
}
}, {
key: 'buildError',
value: function buildError(err, file, sourceMap, requestShortener) {
// Handling error which should have line, col, filename and message
if (err.line) {
var original = sourceMap && sourceMap.originalPositionFor({
line: err.line,
column: err.col
});
if (typeof banner === 'function') {
banner = banner(commentsFile);
}
if (original && original.source && requestShortener) {
return new Error(`${file} from UglifyJs\n${err.message} [${requestShortener.shorten(original.source)}:${original.line},${original.column}][${file}:${err.line},${err.col}]`);
}
if (banner) {
outputSource = new _webpackSources.ConcatSource(`/*! ${banner} */\n`, outputSource);
}
}
return new Error(`${file} from UglifyJs\n${err.message} [${file}:${err.line},${err.col}]`);
} else if (err.stack) {
return new Error(`${file} from UglifyJs\n${err.stack}`);
}
const commentsSource = new _webpackSources.RawSource(`${extractedComments.join('\n\n')}\n`);
return new Error(`${file} from UglifyJs\n${err.message}`);
}
}, {
key: 'buildWarning',
value: function buildWarning(warning, file, sourceMap, warningsFilter, requestShortener) {
if (!file || !sourceMap) {
return `UglifyJs Plugin: ${warning}`;
}
if (commentsFile in compilation.assets) {
// commentsFile already exists, append new comments...
if (compilation.assets[commentsFile] instanceof _webpackSources.ConcatSource) {
compilation.assets[commentsFile].add('\n');
compilation.assets[commentsFile].add(commentsSource);
} else {
compilation.assets[commentsFile] = new _webpackSources.ConcatSource(compilation.assets[commentsFile], '\n', commentsSource);
}
} else {
compilation.assets[commentsFile] = commentsSource;
}
}
var warningMessage = warning;
// Updating assets
processedAssets.add(compilation.assets[file] = outputSource);
var match = warningRegex.exec(warning);
// Handling warnings
if (warnings && warnings.length > 0) {
warnings.forEach(warning => {
const builtWarning = UglifyJsPlugin.buildWarning(warning, file, sourceMap, new _RequestShortener2.default(compiler.context), this.options.warningsFilter);
if (match) {
var line = +match[1];
var column = +match[2];
var original = sourceMap.originalPositionFor({
line,
column
if (builtWarning) {
compilation.warnings.push(builtWarning);
}
});
}
});
if (warningsFilter && !warningsFilter(original.source)) {
return null;
}
taskRunner.exit();
if (original && original.source && original.source !== file && requestShortener) {
warningMessage = `${warningMessage.replace(warningRegex, '')}[${requestShortener.shorten(original.source)}:${original.line},${original.column}]`;
}
callback();
});
};
const plugin = { name: this.constructor.name };
compiler.hooks.compilation.tap(plugin, compilation => {
if (this.options.sourceMap) {
compilation.hooks.buildModule.tap(plugin, buildModuleFn);
}
return `UglifyJs Plugin: ${warningMessage} in ${file}`;
}
}]);
compilation.hooks.optimizeChunkAssets.tapAsync(plugin, optimizeFn.bind(this, compilation));
});
}
}
return UglifyJsPlugin;
}();
exports.default = UglifyJsPlugin;

182

dist/options.json
{
"type": "object",
"additionalProperties": false,
"definitions": {
"file-conditions": {
"anyOf": [
{
"instanceof": "RegExp"
},
{
"type": "string"
}
]
}
},
"properties": {
"test": {},
"include": {},
"exclude": {},
"test": {
"anyOf": [
{
"$ref": "#/definitions/file-conditions"
},
{
"items": {
"anyOf": [
{
"$ref": "#/definitions/file-conditions"
}
]
},
"type": "array"
}
]
},
"include": {
"anyOf": [
{
"$ref": "#/definitions/file-conditions"
},
{
"items": {
"anyOf": [
{
"$ref": "#/definitions/file-conditions"
}
]
},
"type": "array"
}
]
},
"exclude": {
"anyOf": [
{
"$ref": "#/definitions/file-conditions"
},
{
"items": {
"anyOf": [
{
"$ref": "#/definitions/file-conditions"
}
]
},
"type": "array"
}
]
},
"cache": {
"oneOf": [
{ "type": "boolean" },
{ "type": "string" }
"anyOf": [
{
"type": "boolean"
},
{
"type": "string"
}
]

@@ -17,5 +81,9 @@ },

"parallel": {
"oneOf": [
{ "type": "boolean" },
{ "type": "integer" }
"anyOf": [
{
"type": "boolean"
},
{
"type": "integer"
}
]

@@ -31,46 +99,70 @@ },

"additionalProperties": true,
"type": "object",
"properties": {
"ecma": {
"type": "integer",
"minimum": 5,
"maximum": 8
"type": "object"
},
"extractComments": {
"anyOf": [
{
"type": "boolean"
},
"warnings": {
"type": ["boolean", "string"],
"enum": [true, false, "verbose"]
{
"type": "string"
},
"ie8": {
"type": "boolean"
{
"instanceof": "RegExp"
},
"parse": {
"type": "object"
{
"instanceof": "Function"
},
"compress": {
"type": ["boolean", "object"]
},
"mangle": {
"type": ["boolean", "object"],
{
"additionalProperties": false,
"properties": {
"properties": {
"type": ["boolean", "object"]
"condition": {
"anyOf": [
{
"type": "boolean"
},
{
"type": "string"
},
{
"instanceof": "RegExp"
},
{
"instanceof": "Function"
}
]
},
"filename": {
"anyOf": [
{
"type": "string"
},
{
"instanceof": "Function"
}
]
},
"banner": {
"anyOf": [
{
"type": "boolean"
},
{
"type": "string"
},
{
"instanceof": "Function"
}
]
}
}
},
"output": {
"type": ["object", "null"]
},
"toplevel": {
"type": "boolean"
},
"nameCache": {
"type": ["object", "null"]
},
"type": "object"
}
}
]
},
"extractComments": {},
"warningsFilter": {}
"warningsFilter": {
"instanceof": "Function"
}
},
"additionalProperties": false
"type": "object"
}

81

package.json
{
"name": "uglifyjs-webpack-plugin",
"version": "1.3.0",
"version": "2.0.0",
"description": "UglifyJS plugin for webpack",
"license": "MIT",
"repository": "webpack-contrib/uglifyjs-webpack-plugin",
"author": "webpack Contrib Team",
"license": "MIT",
"homepage": "https://github.com/webpack-contrib/uglifyjs-webpack-plugin",
"bugs": "https://github.com/webpack-contrib/uglifyjs-webpack-plugin/issues",
"bin": "",
"main": "dist/cjs.js",
"engines": {
"node": ">= 4.8 < 5.0.0 || >= 5.10"
"node": ">= 6.9.0 <7.0.0 || >= 8.9.0"
},
"main": "dist/cjs.js",
"files": [
"dist"
],
"scripts": {
"start": "npm run build -- -w",
"build": "cross-env NODE_ENV=production babel src -d dist --ignore 'src/**/*.test.js' --copy-files",
"test": "jest",
"test:watch": "jest --watch",
"test:coverage": "jest --collectCoverageFrom='src/**/*.js' --coverage",
"prebuild": "npm run clean",
"clean": "del-cli dist",
"commitlint": "commitlint",
"commitmsg": "commitlint -e $GIT_PARAMS",
"lint": "eslint --cache src test",
"ci:lint:commits": "commitlint --from=${CIRCLE_BRANCH} --to=${CIRCLE_SHA1}",
"lint-staged": "lint-staged",
"prebuild": "npm run clean",
"prepare": "npm run build",
"release": "standard-version",
"security": "nsp check",
"release:ci": "conventional-github-releaser -p angular",
"release:validate": "commitlint --from=$(git describe --tags --abbrev=0) --to=$(git rev-parse HEAD)",
"security": "npm audit",
"test": "jest",
"test:watch": "jest --watch",
"test:coverage": "jest --collectCoverageFrom='src/**/*.js' --coverage",
"ci:lint": "npm run lint && npm run security",
"ci:test": "npm run test -- --runInBand",
"ci:coverage": "npm run test:coverage -- --runInBand",
"appveyor:test": "npm run test",
"webpack-defaults": "webpack-defaults"
"defaults": "webpack-defaults"
},
"files": [
"dist"
],
"peerDependencies": {
"webpack": "^4.3.0"
},
"dependencies": {
"cacache": "^10.0.4",
"find-cache-dir": "^1.0.0",
"cacache": "^11.2.0",
"find-cache-dir": "^2.0.0",
"schema-utils": "^1.0.0",
"serialize-javascript": "^1.4.0",
"schema-utils": "^0.4.5",
"source-map": "^0.6.1",
"uglify-es": "^3.3.4",
"uglify-js": "^3.4.9",
"webpack-sources": "^1.1.0",

@@ -44,26 +55,29 @@ "worker-farm": "^1.5.2"

"devDependencies": {
"@commitlint/cli": "^7.1.2",
"@commitlint/config-conventional": "^7.1.2",
"@webpack-contrib/eslint-config-webpack": "^2.0.4",
"babel-cli": "^6.26.0",
"babel-jest": "^22.4.3",
"babel-jest": "^23.4.2",
"babel-plugin-transform-object-rest-spread": "^6.26.0",
"babel-polyfill": "^6.26.0",
"babel-preset-env": "^1.6.1",
"conventional-github-releaser": "^3.1.2",
"cross-env": "^5.1.3",
"del": "^3.0.0",
"del-cli": "^1.1.0",
"eslint": "^4.14.0",
"eslint": "^5.5.0",
"eslint-config-webpack": "^1.2.5",
"eslint-plugin-import": "^2.8.0",
"jest": "^22.4.3",
"lint-staged": "^6.0.0",
"eslint-plugin-prettier": "^2.6.2",
"husky": "^0.14.3",
"jest": "^23.5.0",
"lint-staged": "^7.2.2",
"memory-fs": "^0.4.1",
"nsp": "^3.1.0",
"pre-commit": "^1.2.2",
"prettier": "^1.14.2",
"standard-version": "^4.3.0",
"terser": "^3.7.6",
"uglify-js": "^3.4.3",
"webpack": "^3.10.0",
"webpack-defaults": "^1.6.0"
"webpack": "^4.17.2",
"webpack-defaults": "^2.3.0"
},
"peerDependencies": {
"webpack": "^2.0.0 || ^3.0.0 || ^4.0.0"
},
"keywords": [

@@ -76,5 +90,5 @@ "uglify",

],
"bugs": "https://github.com/webpack-contrib/uglifyjs-webpack-plugin/issues",
"homepage": "https://github.com/webpack-contrib/uglifyjs-webpack-plugin",
"repository": "https://github.com/webpack-contrib/uglifyjs-webpack-plugin.git",
"jest": {
"testEnvironment": "node"
},
"pre-commit": "lint-staged",

@@ -86,6 +100,3 @@ "lint-staged": {

]
},
"jest": {
"testEnvironment": "node"
}
}

702

README.md

@@ -0,31 +1,37 @@

<div align="center">
<a href="https://github.com/webpack/webpack">
<img width="200" height="200" src="https://webpack.js.org/assets/icon-square-big.svg">
</a>
</div>
[![npm][npm]][npm-url]
[![node][node]][node-url]
[![deps][deps]][deps-url]
[![test][test]][test-url]
[![coverage][cover]][cover-url]
[![tests][tests]][tests-url]
[![cover][cover]][cover-url]
[![chat][chat]][chat-url]
[![size][size]][size-url]
# UglifyJS Webpack Plugin
<div align="center">
<a href="https://github.com/webpack/webpack">
<img width="200" height="200"
src="https://cdn.rawgit.com/webpack/media/e7485eb2/logo/icon.svg">
</a>
<h1>UglifyJS Webpack Plugin</h1>
<p>This plugin uses <a href="https://github.com/mishoo/UglifyJS2/tree/harmony">UglifyJS v3 </a><a href="https://npmjs.com/package/uglify-es">(`uglify-es`)</a> to minify your JavaScript</p>
</div>
This plugin uses [uglify-js](https://github.com/mishoo/UglifyJS2) to minify your JavaScript.
> ℹ️ `webpack < v4.0.0` currently contains [`v0.4.6`](https://github.com/webpack-contrib/uglifyjs-webpack-plugin/tree/version-0.4) of this plugin under `webpack.optimize.UglifyJsPlugin` as an alias. For usage of the latest version (`v1.0.0`), please follow the instructions below. Aliasing `v1.0.0` as `webpack.optimize.UglifyJsPlugin` is scheduled for `webpack v4.0.0`
## Requirements
<h2 align="center">Install</h2>
This module requires a minimum of Node v6.9.0 and Webpack v4.0.0.
```bash
npm i -D uglifyjs-webpack-plugin
## Getting Started
To begin, you'll need to install `uglifyjs-webpack-plugin`:
```console
$ npm install uglifyjs-webpack-plugin --save-dev
```
<h2 align="center">Usage</h2>
Then add the plugin to your `webpack` config. For example:
**webpack.config.js**
```js
const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');

@@ -35,34 +41,23 @@ module.exports = {

optimization: {
minimizer: [
new UglifyJsPlugin()
]
minimizer: [new UglifyJsPlugin()]
}
}
};
```
<h2 align="center">Options</h2>
And run `webpack` via your preferred method.
|Name|Type|Default|Description|
|:--:|:--:|:-----:|:----------|
|**`test`**|`{RegExp\|Array<RegExp>}`| <code>/\\.js$/i</code>|Test to match files against|
|**`include`**|`{RegExp\|Array<RegExp>}`|`undefined`|Files to `include`|
|**`exclude`**|`{RegExp\|Array<RegExp>}`|`undefined`|Files to `exclude`|
|**`cache`**|`{Boolean\|String}`|`false`|Enable file caching|
|**`cacheKeys`**|`{Function(defaultCacheKeys, file) -> {Object}}`|`defaultCacheKeys => defaultCacheKeys`|Allows you to override default cache keys|
|**`parallel`**|`{Boolean\|Number}`|`false`|Use multi-process parallel running to improve the build speed|
|**`sourceMap`**|`{Boolean}`|`false`|Use source maps to map error message locations to modules (This slows down the compilation) ⚠️ **`cheap-source-map` options don't work with this plugin**|
|**`minify`**|`{Function}`|`undefined`|Allows you to override default minify function|
|**`uglifyOptions`**|`{Object}`|[`{...defaults}`](https://github.com/webpack-contrib/uglifyjs-webpack-plugin/tree/master#uglifyoptions)|`uglify` [Options](https://github.com/mishoo/UglifyJS2/tree/harmony#minify-options)|
|**`extractComments`**|`{Boolean\|RegExp\|Function<(node, comment) -> {Boolean\|Object}>}`|`false`|Whether comments shall be extracted to a separate file, (see [details](https://github.com/webpack/webpack/commit/71933e979e51c533b432658d5e37917f9e71595a) (`webpack >= 2.3.0`)|
|**`warningsFilter`**|`{Function(source) -> {Boolean}}`|`() => true`|Allow to filter uglify warnings|
## Options
### `test`
**webpack.config.js**
Type: `String|RegExp|Array<String|RegExp>`
Default: `/\.js(\?.*)?$/i`
Test to match files against.
```js
[
new UglifyJsPlugin({
test: /\.js($|\?)/i
})
]
// in your webpack.config.js
new UglifyJsPlugin({
test: /\.js(\?.*)?$/i
})
```

@@ -72,9 +67,12 @@

**webpack.config.js**
Type: `String|RegExp|Array<String|RegExp>`
Default: `undefined`
Files to include.
```js
[
new UglifyJsPlugin({
include: /\/includes/
})
]
// in your webpack.config.js
new UglifyJsPlugin({
include: /\/includes/
})
```

@@ -84,9 +82,12 @@

**webpack.config.js**
Type: `String|RegExp|Array<String|RegExp>`
Default: `undefined`
Files to exclude.
```js
[
new UglifyJsPlugin({
exclude: /\/excludes/
})
]
// in your webpack.config.js
new UglifyJsPlugin({
exclude: /\/excludes/
})
```

@@ -96,343 +97,452 @@

If you use your own `minify` function please read the `minify` section for cache invalidation correctly.
Type: `Boolean|String`
Default: `false`
#### `{Boolean}`
Enable file caching.
Default path to cache directory: `node_modules/.cache/uglifyjs-webpack-plugin`.
**webpack.config.js**
```js
[
new UglifyJsPlugin({
cache: true
})
]
```
> ℹ️ If you use your own `minify` function please read the `minify` section for cache invalidation correctly.
Enable file caching.
Default path to cache directory: `node_modules/.cache/uglifyjs-webpack-plugin`.
#### `Boolean`
#### `{String}`
Enable/disable file caching.
**webpack.config.js**
```js
[
new UglifyJsPlugin({
cache: 'path/to/cache'
})
]
// in your webpack.config.js
new UglifyJsPlugin({
cache: true
})
```
Path to cache directory.
#### `String`
### `cacheKeys`
Enable file caching and set path to cache directory.
**webpack.config.js**
```js
[
new UglifyJsPlugin({
cache: true,
cacheKeys: (defaultCacheKeys, file) => {
defaultCacheKeys.myCacheKey = 'myCacheKeyValue';
return defaultCacheKeys;
},
})
]
// in your webpack.config.js
new UglifyJsPlugin({
cache: 'path/to/cache'
})
```
### `cacheKeys`
Type: `Function<(defaultCacheKeys, file) -> Object>`
Default: `defaultCacheKeys => defaultCacheKeys`
Allows you to override default cache keys.
Default keys:
Default cache keys:
```js
{
'uglify-es': versions.uglify, // uglify version
'uglifyjs-webpack-plugin': versions.plugin, // plugin version
({
'uglify-js': require('uglify-js/package.json').version, // uglify version
'uglifyjs-webpack-plugin': require('../package.json').version, // plugin version
'uglifyjs-webpack-plugin-options': this.options, // plugin options
path: compiler.outputPath ? `${compiler.outputPath}/${file}` : file, // asset path
hash: crypto.createHash('md4').update(input).digest('hex'), // source file hash
}
});
```
```js
// in your webpack.config.js
new UglifyJsPlugin({
cache: true,
cacheKeys: (defaultCacheKeys, file) => {
defaultCacheKeys.myCacheKey = 'myCacheKeyValue';
return defaultCacheKeys;
},
})
```
### `parallel`
#### `{Boolean}`
Type: `Boolean|Number`
Default: `false`
**webpack.config.js**
Use multi-process parallel running to improve the build speed.
Default number of concurrent runs: `os.cpus().length - 1`.
> ℹ️ Parallelization can speedup your build significantly and is therefore **highly recommended**.
#### `Boolean`
Enable/disable multi-process parallel running.
```js
[
new UglifyJsPlugin({
parallel: true
})
]
// in your webpack.config.js
new UglifyJsPlugin({
parallel: true
})
```
Enable parallelization.
Default number of concurrent runs: `os.cpus().length - 1`.
#### `Number`
#### `{Number}`
Enable multi-process parallel running and set number of concurrent runs.
**webpack.config.js**
```js
[
new UglifyJsPlugin({
parallel: 4
})
]
// in your webpack.config.js
new UglifyJsPlugin({
parallel: 4
})
```
Number of concurrent runs.
### `sourceMap`
> ℹ️ Parallelization can speedup your build significantly and is therefore **highly recommended**
Type: `Boolean`
Default: `false`
### `sourceMap`
Use source maps to map error message locations to modules (this slows down the compilation).
If you use your own `minify` function please read the `minify` section for handling source maps correctly.
**webpack.config.js**
> ⚠️ **`cheap-source-map` options don't work with this plugin**.
```js
[
new UglifyJsPlugin({
sourceMap: true
})
]
// in your webpack.config.js
new UglifyJsPlugin({
sourceMap: true
})
```
> ⚠️ **`cheap-source-map` options don't work with this plugin**
### `minify`
> ⚠️ **Always use `require` inside `minify` function when `parallel` option enabled**
Type: `Function`
Default: `undefined`
**webpack.config.js**
Allows you to override default minify function.
By default plugin uses [uglify-js](https://github.com/mishoo/UglifyJS2) package.
Useful for using and testing unpublished versions or forks.
> ⚠️ **Always use `require` inside `minify` function when `parallel` option enabled**.
```js
[
new UglifyJsPlugin({
minify(file, sourceMap) {
const extractedComments = [];
// in your webpack.config.js
new UglifyJsPlugin({
minify(file, sourceMap) {
const extractedComments = [];
// Custom logic for extract comments
const { error, map, code, warnings } = require('uglify-module') // Or require('./path/to/uglify-module')
.minify(
file,
{ /* Your options for minification */ },
);
// Custom logic for extract comments
return { error, map, code, warnings, extractedComments };
}
})
]
const { error, map, code, warnings } = require('uglify-module') // Or require('./path/to/uglify-module')
.minify(file, {
/* Your options for minification */
});
return { error, map, code, warnings, extractedComments };
}
})
```
By default plugin uses `uglify-es` package.
### `uglifyOptions`
Examples:
Type: `Object`
Default: [default](https://github.com/mishoo/UglifyJS2#minify-options)
#### `uglify-js`
UglifyJS minify options.
```bash
npm i -D uglify-js
```js
// in your webpack.config.js
new UglifyJsPlugin({
uglifyOptions: {
warnings: false,
parse: {},
compress: {},
mangle: true, // Note `mangle.properties` is `false` by default.
output: null,
toplevel: false,
nameCache: null,
ie8: false,
keep_fnames: false,
}
})
```
**webpack.config.js**
### `extractComments`
Type: `Boolean|String|RegExp|Function<(node, comment) -> Boolean|Object>`
Default: `false`
Whether comments shall be extracted to a separate file, (see [details](https://github.com/webpack/webpack/commit/71933e979e51c533b432658d5e37917f9e71595a)).
By default extract only comments using `/^\**!|@preserve|@license|@cc_on/i` regexp condition and remove remaining comments.
If the original file is named `foo.js`, then the comments will be stored to `foo.js.LICENSE`.
The `uglifyOptions.output.comments` option specifies whether the comment will be preserved, i.e. it is possible to preserve some comments (e.g. annotations) while extracting others or even preserving comments that have been extracted.
#### `Boolean`
Enable/disable extracting comments.
```js
[
new UglifyJsPlugin({
// Uncomment lines below for cache invalidation correctly
// cache: true,
// cacheKeys(defaultCacheKeys) {
// return Object.assign(
// {},
// defaultCacheKeys,
// { 'uglify-js': require('uglify-js/package.json').version },
// );
// },
minify(file, sourceMap) {
// https://github.com/mishoo/UglifyJS2#minify-options
const uglifyJsOptions = { /* your `uglify-js` package options */ };
// in your webpack.config.js
new UglifyJsPlugin({
extractComments: true
})
```
if (sourceMap) {
uglifyJsOptions.sourceMap = {
content: sourceMap,
};
}
#### `String`
return require('uglify-js').minify(file, uglifyJsOptions);
}
})
]
Extract `all` or `some` (use `/^\**!|@preserve|@license|@cc_on/i` RegExp) comments.
```js
// in your webpack.config.js
new UglifyJsPlugin({
extractComments: 'all'
})
```
#### `terser`
#### `RegExp`
```bash
npm i -D terser
All comments that match the given expression will be extracted to the separate file.
```js
// in your webpack.config.js
new UglifyJsPlugin({
extractComments: /@extract/i
})
```
**webpack.config.js**
#### `Function<(node, comment) -> Boolean>`
All comments that match the given expression will be extracted to the separate file.
```js
[
new UglifyJsPlugin({
// Uncomment lines below for cache invalidation correctly
// cache: true,
// cacheKeys(defaultCacheKeys) {
// return Object.assign(
// {},
// defaultCacheKeys,
// { terser: require('terser/package.json').version },
// );
// },
minify(file, sourceMap) {
// https://github.com/fabiosantoscode/terser#minify-options
const terserOptions = { /* your `terser` package options */ };
// in your webpack.config.js
new UglifyJsPlugin({
extractComments: function (astNode, comment) {
if (/@extract/i.test(comment.value)) {
return true;
}
return false;
}
})
```
if (sourceMap) {
terserOption.sourceMap = {
content: sourceMap,
};
}
#### `Object`
return require('terser').minify(file, terserOptions);
Allow to customize condition for extract comments, specify extracted file name and banner.
```js
// in your webpack.config.js
new UglifyJsPlugin({
extractComments: {
condition: /^\**!|@preserve|@license|@cc_on/i,
filename(file) {
return `${file}.LICENSE`;
},
banner(licenseFile) {
return `License information can be found in ${licenseFile}`;
}
})
]
}
})
```
### [`uglifyOptions`](https://github.com/mishoo/UglifyJS2/tree/harmony#minify-options)
##### `condition`
|Name|Type|Default|Description|
|:--:|:--:|:-----:|:----------|
|**`ecma`**|`{Number}`|`undefined`|Supported ECMAScript Version (`5`, `6`, `7` or `8`). Affects `parse`, `compress` && `output` options|
|**`warnings`**|`{Boolean}`|`false`|Display Warnings|
|**[`parse`](https://github.com/mishoo/UglifyJS2/tree/harmony#parse-options)**|`{Object}`|`{}`|Additional Parse Options|
|**[`compress`](https://github.com/mishoo/UglifyJS2/tree/harmony#compress-options)**|`{Boolean\|Object}`|`true`|Additional Compress Options|
|**[`mangle`](https://github.com/mishoo/UglifyJS2/tree/harmony#mangle-options)**|`{Boolean\|Object}`|`{inline: false}`|Enable Name Mangling (See [Mangle Properties](https://github.com/mishoo/UglifyJS2/tree/harmony#mangle-properties-options) for advanced setups, use with ⚠️)|
|**[`output`](https://github.com/mishoo/UglifyJS2/tree/harmony#output-options)**|`{Object}`|`{comments: extractComments ? false : /^\**!\|@preserve\|@license\|@cc_on/,}`|Additional Output Options (The defaults are optimized for best compression)|
|**`toplevel`**|`{Boolean}`|`false`|Enable top level variable and function name mangling and to drop unused variables and functions|
|**`nameCache`**|`{Object}`|`null`|Enable cache of mangled variable and property names across multiple invocations|
|**`ie8`**|`{Boolean}`|`false`|Enable IE8 Support|
|**`keep_classnames`**|`{Boolean}`|`undefined`|Enable prevent discarding or mangling of class names|
|**`keep_fnames`**|`{Boolean}`|`false`| Enable prevent discarding or mangling of function names. Useful for code relying on `Function.prototype.name`. If the top level minify option `keep_classnames` is `undefined` it will be overriden with the value of the top level minify option `keep_fnames`|
|**`safari10`**|`{Boolean}`|`false`|Enable work around Safari 10/11 bugs in loop scoping and `await`|
Type: `Boolean|String|RegExp|Function<(node, comment) -> Boolean|Object>`
**webpack.config.js**
Condition what comments you need extract.
```js
[
new UglifyJsPlugin({
uglifyOptions: {
ecma: 8,
warnings: false,
parse: {...options},
compress: {...options},
mangle: {
...options,
properties: {
// mangle property options
}
},
output: {
comments: false,
beautify: false,
...options
},
toplevel: false,
nameCache: null,
ie8: false,
keep_classnames: undefined,
keep_fnames: false,
safari10: false,
// in your webpack.config.js
new UglifyJsPlugin({
extractComments: {
condition: 'some',
filename(file) {
return `${file}.LICENSE`;
},
banner(licenseFile) {
return `License information can be found in ${licenseFile}`;
}
})
]
}
})
```
### `extractComments`
##### `filename`
#### `{Boolean}`
Type: `Regex|Function<(string) -> String>`
Default: `${file}.LICENSE`
All comments that normally would be preserved by the `comments` option will be moved to a separate file. If the original file is named `foo.js`, then the comments will be stored to `foo.js.LICENSE`.
The file where the extracted comments will be stored.
Default is to append the suffix `.LICENSE` to the original filename.
#### `{RegExp|String}` or `{Function<(node, comment) -> {Boolean}>}`
```js
// in your webpack.config.js
new UglifyJsPlugin({
extractComments: {
condition: /^\**!|@preserve|@license|@cc_on/i,
filename: 'extracted-comments.js',
banner(licenseFile) {
return `License information can be found in ${licenseFile}`;
}
}
})
```
All comments that match the given expression (resp. are evaluated to `true` by the function) will be extracted to the separate file. The `comments` option specifies whether the comment will be preserved, i.e. it is possible to preserve some comments (e.g. annotations) while extracting others or even preserving comments that have been extracted.
##### `banner`
#### `{Object}`
Type: `Boolean|String|Function<(string) -> String>`
Default: `/*! For license information please see ${commentsFile} */`
|Name|Type|Default|Description|
|:--:|:--:|:-----:|:----------|
|**`condition`**|`{Regex\|Function}`|``|Regular Expression or function (see previous point)|
|**`filename`**|`{String\|Function}`|`${file}.LICENSE`|The file where the extracted comments will be stored. Can be either a `{String}` or a `{Function<(string) -> {String}>}`, which will be given the original filename. Default is to append the suffix `.LICENSE` to the original filename|
|**`banner`**|`{Boolean\|String\|Function}`|`/*! For license information please see ${filename}.js.LICENSE */`|The banner text that points to the extracted file and will be added on top of the original file. Can be `false` (no banner), a `{String}`, or a `{Function<(string) -> {String}` that will be called with the filename where extracted comments have been stored. Will be wrapped into comment|
The banner text that points to the extracted file and will be added on top of the original file.
Can be `false` (no banner), a `String`, or a `Function<(string) -> String>` that will be called with the filename where extracted comments have been stored.
Will be wrapped into comment.
```js
// in your webpack.config.js
new UglifyJsPlugin({
extractComments: {
condition: true,
filename(file) {
return `${file}.LICENSE`;
},
banner(commentsFile) {
return `My custom banner about license information ${commentsFile}`;
}
}
})
```
### `warningsFilter`
**webpack.config.js**
Type: `Function<(warning, source) -> Boolean>`
Default: `() => true`
Allow to filter [uglify-js](https://github.com/mishoo/UglifyJS2) warnings.
Return `true` to keep the warning, `false` otherwise.
```js
[
new UglifyJsPlugin({
warningsFilter: (src) => true
})
]
// in your webpack.config.js
new UglifyJsPlugin({
warningsFilter: (warning, source) => {
if (/Dropping unreachable code/i.test(warning)) {
return true;
}
if (/filename\.js/i.test(source)) {
return true;
}
return false;
},
})
```
<h2 align="center">Maintainers</h2>
## Examples
<table>
<tbody>
<tr>
<td align="center">
<a href="https://github.com/hulkish">
<img width="150" height="150" src="https://github.com/hulkish.png?size=150">
</br>
Steven Hargrove
</a>
</td>
<td align="center">
<a href="https://github.com/bebraw">
<img width="150" height="150" src="https://github.com/bebraw.png?v=3&s=150">
</br>
Juho Vepsäläinen
</a>
</td>
<td align="center">
<a href="https://github.com/d3viant0ne">
<img width="150" height="150" src="https://github.com/d3viant0ne.png?v=3&s=150">
</br>
Joshua Wiens
</a>
</td>
<td align="center">
<a href="https://github.com/michael-ciniawsky">
<img width="150" height="150" src="https://github.com/michael-ciniawsky.png?v=3&s=150">
</br>
Michael Ciniawsky
</a>
</td>
<td align="center">
<a href="https://github.com/evilebottnawi">
<img width="150" height="150" src="https://github.com/evilebottnawi.png?v=3&s=150">
</br>
Alexander Krasnoyarov
</a>
</td>
</tr>
<tbody>
</table>
### Cache And Parallel
Enable cache and multi-process parallel running.
```js
// in your webpack.config.js
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
module.exports = {
//...
optimization: {
minimizer: [
new UglifyJsPlugin({
cache: true,
parallel: true
})
]
}
};
```
### Preserve Comments
Extract all legal comments (i.e. `/^\**!|@preserve|@license|@cc_on/i`) and preserve `/@license/i` comments.
```js
// in your webpack.config.js
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
module.exports = {
//...
optimization: {
minimizer: [
new UglifyJsPlugin({
uglifyOptions: {
output: {
comments: /@license/i
}
},
extractComments: true
})
]
}
};
```
### Custom Minify Function
Override default minify function - use [terser](https://github.com/fabiosantoscode/terser) for minification.
```js
// in your webpack.config.js
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
module.exports = {
//...
optimization: {
minimizer: [
new UglifyJsPlugin({
// Uncomment lines below for cache invalidation correctly
// cache: true,
// cacheKeys(defaultCacheKeys) {
// delete defaultCacheKeys['uglify-js'];
//
// return Object.assign(
// {},
// defaultCacheKeys,
// { 'uglify-js': require('uglify-js/package.json').version },
// );
// },
minify(file, sourceMap) {
// https://github.com/mishoo/UglifyJS2#minify-options
const uglifyJsOptions = {
/* your `uglify-js` package options */
};
if (sourceMap) {
uglifyJsOptions.sourceMap = {
content: sourceMap,
};
}
return require('terser').minify(file, uglifyJsOptions);
},
})
]
}
};
```
## Contributing
Please take a moment to read our contributing guidelines if you haven't yet done so.
[CONTRIBUTING](./.github/CONTRIBUTING.md)
## License
[MIT](./LICENSE)
[npm]: https://img.shields.io/npm/v/uglifyjs-webpack-plugin.svg
[npm-url]: https://npmjs.com/package/uglifyjs-webpack-plugin
[node]: https://img.shields.io/node/v/uglifyjs-webpack-plugin.svg
[node-url]: https://nodejs.org
[deps]: https://david-dm.org/webpack-contrib/uglifyjs-webpack-plugin.svg
[deps-url]: https://david-dm.org/webpack-contrib/uglifyjs-webpack-plugin
[test]: https://img.shields.io/circleci/project/github/webpack-contrib/uglifyjs-webpack-plugin.svg
[test-url]: https://circleci.com/gh/webpack-contrib/uglifyjs-webpack-plugin
[tests]: https://img.shields.io/circleci/project/github/webpack-contrib/uglifyjs-webpack-plugin.svg
[tests-url]: https://circleci.com/gh/webpack-contrib/uglifyjs-webpack-plugin
[cover]: https://codecov.io/gh/webpack-contrib/uglifyjs-webpack-plugin/branch/master/graph/badge.svg
[cover-url]: https://codecov.io/gh/webpack-contrib/uglifyjs-webpack-plugin
[chat]: https://img.shields.io/badge/gitter-webpack%2Fwebpack-brightgreen.svg
[chat-url]: https://gitter.im/webpack/webpack
[size]: https://packagephobia.now.sh/badge?p=uglifyjs-webpack-plugin
[size-url]: https://packagephobia.now.sh/result?p=uglifyjs-webpack-plugin
dist/uglify/minify.js
dist/uglify/Runner.js
dist/uglify/worker.js
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