when my project was on the update line a few days ago, there were 4 errors in the production environment. It was strange that there were no errors in the development environment, and then I began to jump into the pit and debug to find the reason.
this project is created by the vue-cli2 version, not cli3,. Here are the webpack-related configurations:
config-index.js
build: {
productionSourceMap: true,
devtool: "source-map",
}webpack.base.conf.js
"use strict"
const path = require("path")
const utils = require("./utils")
const config = require("../config")
const vueLoaderConfig = require("./vue-loader.conf")
function resolve(dir) {
return path.join(__dirname, "..", dir)
}
module.exports = {
context: path.resolve(__dirname, "../"),
entry: {
app: "./src/main.js"
},
output: {
path: config.build.assetsRoot,
filename: "[name].js",
publicPath: process.env.NODE_ENV === "production"
? config.build.assetsPublicPath
: config.dev.assetsPublicPath
},
resolve: {
extensions: [".js", ".vue", ".json"],
alias: {
"vue$": "vue/dist/vue.esm.js",
"@": resolve("src"),
}
},
module: {
rules: [
{
test: /\.vue$/,
loader: "vue-loader",
options: vueLoaderConfig
},
{
test: /\.js$/,
loader: "babel-loader",
include: [resolve("src"), resolve("test"), resolve("node_modules/webpack-dev-server/client")]
},
{
test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
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]")
}
},
{
test: /\.less$/,
loader: "style-loader!css-loader!less-loader",
},
]
},
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.prod.conf.js
"use strict"
const path = require("path")
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 HtmlWebpackPlugin = require("html-webpack-plugin")
const ExtractTextPlugin = require("extract-text-webpack-plugin")
const OptimizeCSSPlugin = require("optimize-css-assets-webpack-plugin")
const UglifyJsPlugin = require("uglifyjs-webpack-plugin")
const env = require("../config/prod.env")
const webpackConfig = merge(baseWebpackConfig, {
module: {
rules: utils.styleLoaders({
sourceMap: config.build.productionSourceMap,
extract: true,
usePostCSS: true
})
},
devtool: config.build.productionSourceMap ? config.build.devtool : false,
output: {
path: config.build.assetsRoot,
filename: utils.assetsPath("js/[name].[chunkhash].js"),
chunkFilename: utils.assetsPath("js/[id].[chunkhash].js")
},
plugins: [
// http://vuejs.github.io/vue-loader/en/workflow/production.html
new webpack.DefinePlugin({
"process.env": env
}),
new UglifyJsPlugin({
uglifyOptions: {
compress: {
warnings: false
}
},
sourceMap: config.build.productionSourceMap,
parallel: true
}),
// extract css into its own file
new ExtractTextPlugin({
filename: utils.assetsPath("css/[name].[contenthash].css"),
// Setting the following option to `false` will not extract CSS from codesplit chunks.
// Their CSS will instead be inserted dynamically with style-loader when the codesplit chunk has been loaded by webpack.
// It"s currently set to `true` because we are seeing that sourcemaps are included in the codesplit bundle as well when it"s `false`,
// increasing file size: https://github.com/vuejs-templates/webpack/issues/1110
allChunks: true,
}),
// Compress extracted CSS. We are using this plugin so that possible
// duplicated CSS from different components can be deduped.
new OptimizeCSSPlugin({
cssProcessorOptions: config.build.productionSourceMap
? {safe: true, map: {inline: false}}
: {safe: true}
}),
// generate dist index.html with correct asset hash for caching.
// you can customize output by editing /index.html
// see https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: config.build.index,
template: "index.html",
inject: true,
minify: {
removeComments: true,
collapseWhitespace: true,
removeAttributeQuotes: true
// more options:
// https://github.com/kangax/html-minifier-sharpoptions-quick-reference
},
// necessary to consistently work with multiple chunks via CommonsChunkPlugin
chunksSortMode: "dependency"
}),
// keep module.id stable when vendor modules does not change
new webpack.HashedModuleIdsPlugin(),
// enable scope hoisting
new webpack.optimize.ModuleConcatenationPlugin(),
// split vendor js into its own file
new webpack.optimize.CommonsChunkPlugin({
name: "vendor",
minChunks(module) {
// any required modules inside node_modules are extracted to vendor
return (
module.resource &&
/\.js$/.test(module.resource) &&
module.resource.indexOf(
path.join(__dirname, "../node_modules")
) === 0
)
}
}),
// extract webpack runtime and module manifest to its own file in order to
// prevent vendor hash from being updated whenever app bundle is updated
new webpack.optimize.CommonsChunkPlugin({
name: "manifest",
minChunks: Infinity
}),
// This instance extracts shared chunks from code splitted chunks and bundles them
// in a separate chunk, similar to the vendor chunk
// see: https://webpack.js.org/plugins/commons-chunk-plugin/-sharpextra-async-commons-chunk
new webpack.optimize.CommonsChunkPlugin({
name: "app",
async: "vendor-async",
children: true,
minChunks: 3
}),
// copy custom static assets
new CopyWebpackPlugin([
{
from: path.resolve(__dirname, "../static"),
to: config.build.assetsSubDirectory,
ignore: [".*"]
}
]),
]
})
if (config.build.productionGzip) {
const CompressionWebpackPlugin = require("compression-webpack-plugin")
webpackConfig.plugins.push(
new CompressionWebpackPlugin({
filename: "[path].gz[query]",
algorithm: "gzip",
test: new RegExp(
"\\.(" +
config.build.productionGzipExtensions.join("|") +
")$"
),
threshold: 10240,
// deleteOriginalAssets:true, //
minRatio: 0.8
})
)
}
if (config.build.bundleAnalyzerReport) {
const BundleAnalyzerPlugin = require("webpack-bundle-analyzer").BundleAnalyzerPlugin
webpackConfig.plugins.push(new BundleAnalyzerPlugin())
}
const BundleAnalyzerPlugin = require("webpack-bundle-analyzer").BundleAnalyzerPlugin;
module.exports = {
plugins: [
new BundleAnalyzerPlugin()
]
};
module.exports = webpackConfig the following is a screenshot of the error:
