我建立一个Chrome扩展与Preact/ES6 /的WebPack。我包使用2种配置:debug
使用ESLint,巴贝尔和CSS + JSON装载机,prod
增加了两个插件:UglifyJS
和邮编。这里的webpack.config.js
:意外的标记错误使用UglifyJS与Preact,2的WebPack
const webpack = require('webpack');
const path = require('path');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const WebpackCleanupPlugin = require('webpack-cleanup-plugin');
const ZipPlugin = require('zip-webpack-plugin');
const manifest = require('./src/manifest');
let options = {
// entry file - starting point for the app
entry: {
popup: './src/scripts/popup.js',
options: './src/scripts/options.js',
background: './src/scripts/background.js'
},
// where to dump the output of a production build
output: {
path: path.join(__dirname, 'build'),
filename: 'scripts/[name].js'
},
module: {
rules: [
{
test: /\.jsx?/i,
exclude: /node_modules/,
loader: 'eslint-loader',
options: {
},
enforce: 'pre'
},
{
test: /\.jsx?/i,
exclude: /node_modules/,
loader: 'babel-loader',
options: {
presets: [
['env', {
'targets': {
'chrome': 52
}
}]
],
plugins: [
['transform-react-jsx'],
['module-resolver', {
'root': ['.'],
'alias': {
'react': 'preact-compat',
'react-dom': 'preact-compat'
}
}]
]
}
},
{
test: /\.css$/,
use: ['style-loader', 'css-loader']
},
{
test: /\.json$/,
use: 'json-loader'
}
]
},
plugins: [
new WebpackCleanupPlugin(),
new CopyWebpackPlugin([
{from: './src/_locales', to: '_locales'},
{from: './src/icons', to: 'icons'},
{from: './src/manifest.json', flatten: true},
{from: './src/*.html', flatten: true}
])
],
// enable Source Maps
devtool: 'source-map',
};
if(process.env.NODE_ENV === 'production') {
options.plugins.push(
new webpack.optimize.UglifyJsPlugin({
compress: {
warnings: false,
drop_console: false,
screw_ie8: true,
conditionals: true,
unused: true,
comparisons: true,
sequences: true,
dead_code: true,
evaluate: true,
if_return: true,
join_vars: true,
},
output: {
comments: false,
},
}),
new ZipPlugin({
path: '../dist',
filename: `${manifest.name} ${manifest.version}.zip`
})
);
}
console.log(`This is a ${process.env.NODE_ENV === 'production' ? 'production' : 'development'} build with ${options.plugins.length} plugins`);
module.exports = options;
但是当我运行prod
,我收到以下错误:
ERROR in scripts/popup.js from UglifyJs
Unexpected token: name (getLatestValues) [scripts/popup.js:29428,4]
ERROR in scripts/options.js from UglifyJs
Unexpected token: name (getLatestValues) [scripts/options.js:29428,4]
ERROR in scripts/background.js from UglifyJs
Unexpected token: name (getLatestValues) [scripts/background.js:28678,4]
值得一提的是,getLatestResults
不是唯一的在我的代码的唯一功能有await
在它的前面。另外,它应该只出现在background.js
中,因为其他入口点不应该调用它。
另外值得一提的是,如果我只是发表意见UglifyJS
代码,所产生的压缩扩展效果很好。
什么样的配置一块我缺少做这些错误会消失吗?
貌似丑化巴贝尔前莫名其妙地运行。或者它不喜欢babel的输出格式。 'async' /'await'究竟编译到什么生成器?我猜uglify不知道ES6'yield'关键字。 – Bergi
我相信它会被翻译成'发生器'。不过,我的代码中有其他位置使用'async/await',因为某些原因未被调用。 (除非Babel以不同的方式实现不同的调用,即类方法与常规函数)。 –