从webpack3.x升级到webpack4.16.3后,运行时遇到以下错误
npm run dev
--max_old_space_size=4096
我注意到的一件事是,用错误的import或export语句保存文件时出错。
错误日志:
[hardsource:d5167ca7] Using 732 MB of disk space.
[hardsource:d5167ca7] Last compilation did not finish saving. Building new cache.
95% emitting HtmlWebpackPlugin
<--- Last few GCs --->
[6805:0x2babd20] 877537 ms: Mark-sweep 1344.1 (1396.8) -> 1342.6 (1394.9) MB, 455.6 / 0.1 ms (average mu = 0.378, current mu = 0.000) last resort GC in old space requested
[6805:0x2babd20] 877899 ms: Mark-sweep 1342.6 (1394.9) -> 1342.6 (1394.9) MB, 362.1 / 0.1 ms (average mu = 0.250, current mu = 0.000) last resort GC in old space requested
<--- JS stacktrace --->
==== JS stack trace =========================================
0: ExitFrame [pc: 0xbd4a57041bd]
Security context: 0xeb4c809e6c9 <JSObject>
1: byteLength(aka byteLength) [0x2eacaef7f969] [buffer.js:530] [bytecode=0x13d2a9725f69 offset=204](this=0x2dd8909822e1 <undefined>,string=0x3f1ce1e95801 <Very long string[23843934]>,encoding=0xeb4c80b1a99 <String[4]: utf8>)
2: arguments adaptor frame: 3->2
3: fromString(aka fromString) [0xfa9ba97d19] [buffer.js:341] [bytecode=0x13d2a9720091 offset...
FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
1: 0x8b5f80 node::Abort() [node]
2: 0x8b5fcc [node]
3: 0xab730e v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [node]
4: 0xab7528 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [node]
5: 0xea5152 [node]
6: 0xeb43c6 v8::internal::Heap::AllocateRawWithRetry(int, v8::internal::AllocationSpace, v8::internal::AllocationAlignment) [node]
7: 0xe828af v8::internal::Factory::NewRawTwoByteString(int, v8::internal::PretenureFlag) [node]
8: 0xfc792f v8::internal::String::SlowFlatten(v8::internal::Handle<v8::internal::ConsString>, v8::internal::PretenureFlag) [node]
9: 0xab4a44 v8::internal::String::Flatten(v8::internal::Handle<v8::internal::String>, v8::internal::PretenureFlag) [node]
10: 0xac2d8f v8::String::Utf8Length() const [node]
11: 0x8ce702 [node]
12: 0xb44409 [node]
13: 0xb44f79 v8::internal::Builtin_HandleApiCall(int, v8::internal::Object**, v8::internal::Isolate*) [node]
14: 0xbd4a57041bd
Aborted (core dumped)
webpack.base.conf.js
'use strict'
const path = require('path')
const utils = require('./utils')
const config = require('./config')
const vueLoaderConfig = require('./vue-loader.conf')
const VueLoaderPlugin = require('vue-loader/lib/plugin')
var HardSourceWebpackPlugin = require('hard-source-webpack-plugin')
function resolve (dir) {
return path.join(__dirname, '..', dir)
}
const createLintingRule = () => ({
test: /\.(js|vue)$/,
loader: 'eslint-loader',
enforce: 'pre',
include: [resolve('resources/assets/js')],
options: {
formatter: require('eslint-friendly-formatter'),
emitWarning: !config.dev.showEslintErrorsInOverlay,
},
})
module.exports = {
mode: (process.env.NODE_ENV === 'production')
? 'production'
: 'development',
context: path.resolve(__dirname, '../'),
entry: {
app: ['./resources/assets/sass/app.scss', './resources/assets/js/main.js'],
},
plugins: [
new VueLoaderPlugin(),
new HardSourceWebpackPlugin(),
// You can optionally exclude items that may not be working with HardSource
// or items with custom loaders while you are actively developing the
// loader.
new HardSourceWebpackPlugin.ExcludeModulePlugin([
{
// HardSource works with mini-css-extract-plugin but due to how
// mini-css emits assets, assets are not emitted on repeated builds with
// mini-css and hard-source together. Ignoring the mini-css loader
// modules, but not the other css loader modules, excludes the modules
// that mini-css needs rebuilt to output assets every time.
test: /mini-css-extract-plugin[\\/]dist[\\/]loader/,
},
{
test: /my-loader/,
include: path.join(__dirname, 'vendor'),
},
])
],
output: {
path: config.build.assetsRoot,
filename: '[name].js',
publicPath:
process.env.NODE_ENV === 'production'
? config.build.assetsPublicPath
: config.dev.assetsPublicPath,
},
resolve: {
modules: ['node_modules'],
extensions: ['.js', '.vue', '.json'],
alias: {
clockwork: resolve('resources/assets/js'),
},
},
module: {
rules: [
...(config.dev.useEslint ? [createLintingRule()] : []),
{
test: /\.vue$/,
loader: 'vue-loader',
options: vueLoaderConfig,
},
{
test: /\.js$/,
loader: 'babel-loader',
include: [
resolve('resources/assets/js'),
resolve('node_modules/webpack-dev-server/client')
],
},
{
test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: utils.assetsPath('img/[name].[hash:7].[ext]'),
},
},
{
test: /\.(mp4|webm|ogg|mp3|wav|flac|aac)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: utils.assetsPath('media/[name].[hash:7].[ext]'),
},
},
{
test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: utils.assetsPath('fonts/[name].[hash:7].[ext]'),
},
},
],
},
node: {
// prevent webpack from injecting useless setImmediate polyfill because Vue
// source contains it (although only uses it if it's native).
setImmediate: false,
// prevent webpack from injecting mocks to Node native modules
// that does not make sense for the client
dgram: 'empty',
fs: 'empty',
net: 'empty',
tls: 'empty',
child_process: 'empty',
},
};
webpack.dev.conf.js
'use strict'
const utils = require('./utils')
const webpack = require('webpack')
const config = require('./config')
const merge = require('webpack-merge')
const baseWebpackConfig = require('./webpack.base.conf')
// const CopyWebpackPlugin = require('copy-webpack-plugin')
const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
// const AutoDllPlugin = require('autodll-webpack-plugin');
const FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')
const portfinder = require('portfinder')
const HOST = process.env.HOST
const PORT = process.env.PORT && Number(process.env.PORT)
const devWebpackConfig = merge(baseWebpackConfig, {
module: {
rules: utils.styleLoaders({ sourceMap: config.dev.cssSourceMap, usePostCSS: true })
},
// cheap-module-eval-source-map is faster for development
devtool: config.dev.devtool,
// these devServer options should be customized in /config/index.js
devServer: {
clientLogLevel: 'warning',
historyApiFallback: {
rewrites: [
{ from: /.*/, to: path.posix.join(config.dev.assetsPublicPath, 'index.html') },
],
},
hot: true,
contentBase: false, // since we use CopyWebpackPlugin.
compress: true,
host: HOST || config.dev.host,
port: PORT || config.dev.port,
open: config.dev.autoOpenBrowser,
overlay: config.dev.errorOverlay
? { warnings: false, errors: true }
: false,
publicPath: config.dev.assetsPublicPath,
proxy: config.dev.proxyTable,
quiet: true, // necessary for FriendlyErrorsPlugin
watchOptions: {
poll: config.dev.poll,
}
},
plugins: [
new webpack.DefinePlugin({
'process.env': require('./config/dev.env')
}),
new webpack.HotModuleReplacementPlugin(),
new webpack.NamedModulesPlugin(), // HMR shows correct file names in console on update.
new webpack.NoEmitOnErrorsPlugin(),
// https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: 'index.html',
template: 'webpack/index.html',
inject: true
})
]
})
module.exports = new Promise((resolve, reject) => {
portfinder.basePort = process.env.PORT || config.dev.port
portfinder.getPort((err, port) => {
if (err) {
reject(err)
} else {
// publish the new Port, necessary for e2e tests
process.env.PORT = port
// add port to devServer config
devWebpackConfig.devServer.port = port
// Add FriendlyErrorsPlugin
devWebpackConfig.plugins.push(new FriendlyErrorsPlugin({
compilationSuccessInfo: {
messages: [`Your application is running here: http://${devWebpackConfig.devServer.host}:${port}`],
},
onErrors: config.dev.notifyOnErrors
? utils.createNotifierCallback()
: undefined
}))
resolve(devWebpackConfig)
}
})
})
编辑:经过一番挖掘,在Webpack开发者的帮助下,我们得出结论,这不是Webpack的问题。这很可能是sass加载程序导致的内存泄漏。我仍然没有找到解决方案,但会保持更新。
这种内存泄漏的后果是,当您多次编辑同一个文件时,每次保存文件时,dev服务器都会以小增量填充内存。当达到内存限制时,节点崩溃。
