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melloc01/uglify-index.js

Last active April 10, 2018 16:39
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uglify-index.js
'use strict'
Object.defineProperty(exports, '__esModule', {
value: true
})
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')
var _crypto2 = _interopRequireDefault(_crypto)
var _path = require('path')
var _path2 = _interopRequireDefault(_path)
var _sourceMap = require('source-map')
var _webpackSources = require('webpack-sources')
var _RequestShortener = require('webpack/lib/RequestShortener')
var _RequestShortener2 = _interopRequireDefault(_RequestShortener)
var _ModuleFilenameHelpers = require('webpack/lib/ModuleFilenameHelpers')
var _ModuleFilenameHelpers2 = _interopRequireDefault(_ModuleFilenameHelpers)
var _schemaUtils = require('schema-utils')
var _schemaUtils2 = _interopRequireDefault(_schemaUtils)
var _serializeJavascript = require('serialize-javascript')
var _serializeJavascript2 = _interopRequireDefault(_serializeJavascript)
var _options = require('./options.json')
var _options2 = _interopRequireDefault(_options)
var _uglify = require('./uglify')
var _uglify2 = _interopRequireDefault(_uglify)
var _versions = require('./uglify/versions')
var _versions2 = _interopRequireDefault(_versions)
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')
}
}
var warningRegex = /\[.+:([0-9]+),([0-9]+)\]/
var UglifyJsPlugin = (function () {
function UglifyJsPlugin () {
var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}
_classCallCheck(this, UglifyJsPlugin)
;(0, _schemaUtils2.default)(_options2.default, options, 'UglifyJs Plugin')
var _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$cache,
_options$parallel = options.parallel,
parallel = _options$parallel === undefined ? false : _options$parallel,
include = options.include,
exclude = options.exclude
this.options = {
test,
warningsFilter,
extractComments,
sourceMap,
cache,
parallel,
include,
exclude,
uglifyOptions: Object.assign(
{
output: {
comments: extractComments ? false : /^\**!|@preserve|@license|@cc_on/
}
},
uglifyOptions
)
}
}
_createClass(
UglifyJsPlugin,
[
{
key: 'apply',
value: function apply (compiler) {
var _this = this
console.log('')
console.warn('Plugin init...')
var requestShortener = new _RequestShortener2.default(compiler.context)
var buildModuleFn = function buildModuleFn (moduleArg) {
// to get detailed location info about errors
moduleArg.useSourceMap = true
}
var optimizeFn = function optimizeFn (compilation, chunks, callback) {
var uglify = new _uglify2.default({
cache: _this.options.cache,
parallel: _this.options.parallel
})
var uglifiedAssets = new WeakSet()
var tasks = []
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 sourceMap = void 0
var asset = compilation.assets[file]
if (uglifiedAssets.has(asset)) {
return
}
try {
var input = void 0
var inputSourceMap = void 0
if (_this.options.sourceMap && asset.sourceAndMap) {
var _asset$sourceAndMap = asset.sourceAndMap(),
source = _asset$sourceAndMap.source,
map = _asset$sourceAndMap.map
input = source
inputSourceMap = map
sourceMap = new _sourceMap.SourceMapConsumer(inputSourceMap)
} else {
input = asset.source()
inputSourceMap = null
}
// Handling comment extraction
var commentsFile = false
if (_this.options.extractComments) {
commentsFile = _this.options.extractComments.filename || `${file}.LICENSE`
if (typeof commentsFile === 'function') {
commentsFile = commentsFile(file)
}
}
var task = {
file,
input,
sourceMap,
inputSourceMap,
commentsFile,
extractComments: _this.options.extractComments,
uglifyOptions: _this.options.uglifyOptions
}
if (_this.options.cache) {
task.cacheKey = (0, _serializeJavascript2.default)({
'uglify-es': _versions2.default.uglify,
'uglifyjs-webpack-plugin': _versions2.default.plugin,
'uglifyjs-webpack-plugin-options': _this.options,
path: compiler.outputPath ? `${compiler.outputPath}/${file}` : file,
hash: _crypto2.default
.createHash('md4')
.update(input)
.digest('hex')
})
}
tasks.push(task)
} catch (error) {
compilation.errors.push(
UglifyJsPlugin.buildError(error, file, sourceMap, requestShortener)
)
}
})
console.log('')
console.warn('After chunks reduce, before runTasks... tasks len=', tasks.length)
if (tasks.length) {
console.log('filename = ', tasks[0]['file'])
// console.log(tasks[0]['input'])
// console.log(tasks[0]['cacheKey'])
}
// [
// ('file',
// 'input',
// 'sourceMap',
// 'inputSourceMap',
// 'commentsFile',
// 'extractComments',
// 'uglifyOptions',
// 'cacheKey')
// ]
uglify.runTasks(tasks, function (tasksError, results) {
if (tasksError) {
compilation.errors.push(tasksError)
return
}
results.forEach(function (data, index) {
var _tasks$index = tasks[index],
file = _tasks$index.file,
input = _tasks$index.input,
sourceMap = _tasks$index.sourceMap,
inputSourceMap = _tasks$index.inputSourceMap,
commentsFile = _tasks$index.commentsFile
var error = data.error,
map = data.map,
code = data.code,
warnings = data.warnings,
extractedComments = data.extractedComments
console.log('===========file============')
console.log(file)
console.log('===========file-end========')
// Handling results
// Error case: add errors, and go to next file
if (error) {
compilation.errors.push(
UglifyJsPlugin.buildError(error, file, sourceMap, requestShortener)
)
return
}
var outputSource = void 0
if (map) {
outputSource = new _webpackSources.SourceMapSource(
code,
file,
JSON.parse(map),
input,
inputSourceMap
)
} else {
outputSource = new _webpackSources.RawSource(code)
}
// 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
)}`
if (typeof banner === 'function') {
banner = banner(commentsFile)
}
if (banner) {
outputSource = new _webpackSources.ConcatSource(
`/*! ${banner} */\n`,
outputSource
)
}
}
var commentsSource = new _webpackSources.RawSource(
`${extractedComments.join('\n\n')}\n`
)
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
}
}
// Updating assets
uglifiedAssets.add((compilation.assets[file] = outputSource))
// Handling warnings
if (warnings) {
var warnArr = UglifyJsPlugin.buildWarnings(
warnings,
file,
sourceMap,
_this.options.warningsFilter,
requestShortener
)
if (warnArr.length > 0) {
compilation.warnings.push(
new Error(`${file} from UglifyJs\n${warnArr.join('\n')}`)
)
}
}
})
uglify.exit()
callback()
})
}
if (compiler.hooks) {
var plugin = { name: 'UglifyJSPlugin' }
compiler.hooks.compilation.tap(plugin, function (compilation) {
if (_this.options.sourceMap) {
compilation.hooks.buildModule.tap(plugin, buildModuleFn)
}
compilation.hooks.optimizeChunkAssets.tapAsync(plugin, optimizeFn.bind(_this, compilation))
})
} else {
compiler.plugin('compilation', function (compilation) {
if (_this.options.sourceMap) {
compilation.plugin('build-module', buildModuleFn)
}
compilation.plugin('optimize-chunk-assets', optimizeFn.bind(_this, compilation))
})
}
}
}
],
[
{
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 (original && original.source) {
return new Error(
`${file} from UglifyJs\n${err.message} [${requestShortener.shorten(original.source)}:${
original.line
},${original.column}][${file}:${err.line},${err.col}]`
)
}
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${err.stack}`)
}
return new Error(`${file} from UglifyJs\n${err.message}`)
}
},
{
key: 'buildWarnings',
value: function buildWarnings (warnings, file, sourceMap, warningsFilter, requestShortener) {
if (!sourceMap) {
return warnings
}
return warnings.reduce(function (accWarnings, warning) {
var match = warningRegex.exec(warning)
var line = +match[1]
var column = +match[2]
var original = sourceMap.originalPositionFor({
line,
column
})
if (
original &&
original.source &&
original.source !== file &&
warningsFilter(original.source)
) {
accWarnings.push(
`${warning.replace(warningRegex, '')}[${requestShortener.shorten(original.source)}:${
original.line
},${original.column}]`
)
}
return accWarnings
}, [])
}
}
]
)
return UglifyJsPlugin
})()
exports.default = UglifyJsPlugin
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