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fix: css extraction
1 parent ce86da7 commit d293194

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5 files changed

+157
-9
lines changed

5 files changed

+157
-9
lines changed

‎lib/webpack/RemoveEmptyChunkPlugin.js

+12
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
1+
// https://github.com/webpack-contrib/mini-css-extract-plugin/issues/85
2+
module.exports = class Plugin {
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apply (compiler) {
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compiler.hooks.emit.tap('vuepress-remove-empty-chunk', compilation => {
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Object.keys(compilation.assets).forEach(name => {
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if (/_assets\/js\/styles\.\w{8}\.js$/.test(name)) {
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delete compilation.assets[name]
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}
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})
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})
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}
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}

‎lib/webpack/baseConfig.js

+38-7
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@ module.exports = function createBaseConfig ({
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publicPath,
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themePath,
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notFoundPath
10-
}, { debug } = {}) {
10+
}, { debug } = {}, isServer) {
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const markdown = require('../markdown')(siteConfig)
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const Config = require('webpack-chain')
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const { VueLoaderPlugin } = require('vue-loader')
@@ -142,10 +142,12 @@ module.exports = function createBaseConfig ({
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applyLoaders(normalRule, false)
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function applyLoaders (rule, modules) {
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if (isProd) {
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rule.use('extract-css-loader').loader(CSSExtractPlugin.loader)
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} else {
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rule.use('vue-style-loader').loader('vue-style-loader')
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if (!isServer) {
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if (isProd) {
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rule.use('extract-css-loader').loader(CSSExtractPlugin.loader)
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} else {
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rule.use('vue-style-loader').loader('vue-style-loader')
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}
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}
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rule.use('css-loader').loader('css-loader').options({
@@ -174,10 +176,39 @@ module.exports = function createBaseConfig ({
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.plugin('vue-loader')
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.use(VueLoaderPlugin)
176178

177-
if (isProd) {
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if (isProd && !isServer) {
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config
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.plugin('extract-css')
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.use(CSSExtractPlugin, [{ filename: '_assets/css/styles.[hash:8].css' }])
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.use(CSSExtractPlugin, [{
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filename: '_assets/css/styles.[chunkhash:8].css'
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}])
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// ensure all css are extracted together.
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// since most of the CSS will be from the theme and very little
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// CSS will be from async chunks
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config
190+
.set('optimization', {
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splitChunks: {
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cacheGroups: {
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chunks: 'all',
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styles: {
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name: 'styles',
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// necessary for extraction to include md files as well
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test: m => /css-extract/.test(m.type),
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chunks: 'all',
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enforce: true
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}
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}
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}
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})
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// enforcing all styles extraction leaves an empty styles chunk.
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// prevent it from being emitted.
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// this is a bug in mini-css-extract-plugin
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// https://github.com/webpack-contrib/mini-css-extract-plugin/issues/85
209+
config
210+
.plugin('remove-empty-chunk')
211+
.use(require('./RemoveEmptyChunkPlugin'))
181212
}
182213

183214
return config

‎lib/webpack/clientConfig.js

+7-1
Original file line numberDiff line numberDiff line change
@@ -29,7 +29,13 @@ module.exports = function createClientConfig (options, cliOptions) {
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// generate client manifest only during build
3131
if (process.env.NODE_ENV === 'production') {
32-
const VueSSRClientPlugin = require('vue-server-renderer/client-plugin')
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// TODO this is a temp build of vue-server-renderer/client-plugin.
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// Switch back after problems are resolved.
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// Fixes two things:
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// 1. Include CSS in preload files
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// 2. filter out useless styles.xxxxx.js chunk from mini-css-extract-plugin
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// https://github.com/webpack-contrib/mini-css-extract-plugin/issues/85
38+
const VueSSRClientPlugin = require('./clientPlugin')
3339
config
3440
.plugin('ssr-client')
3541
.use(VueSSRClientPlugin, [{

‎lib/webpack/clientPlugin.js

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@@ -0,0 +1,99 @@
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// Temporarily copied from a dev build
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'use strict'
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5+
/* */
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var isJS = function (file) { return /\.js(\?[^.]+)?$/.test(file) }
8+
9+
var isCSS = function (file) { return /\.css(\?[^.]+)?$/.test(file) }
10+
11+
var onEmit = function (compiler, name, hook) {
12+
if (compiler.hooks) {
13+
// Webpack >= 4.0.0
14+
compiler.hooks.emit.tapAsync(name, hook)
15+
} else {
16+
// Webpack < 4.0.0
17+
compiler.plugin('emit', hook)
18+
}
19+
}
20+
21+
var hash = require('hash-sum')
22+
var uniq = require('lodash.uniq')
23+
var VueSSRClientPlugin = function VueSSRClientPlugin (options) {
24+
if (options === void 0) options = {}
25+
26+
this.options = Object.assign({
27+
filename: 'vue-ssr-client-manifest.json'
28+
}, options)
29+
}
30+
31+
VueSSRClientPlugin.prototype.apply = function apply (compiler) {
32+
var this$1 = this
33+
34+
onEmit(compiler, 'vue-client-plugin', function (compilation, cb) {
35+
var stats = compilation.getStats().toJson()
36+
37+
var allFiles = uniq(stats.assets
38+
.map(function (a) { return a.name }))
39+
.filter(file => {
40+
return !/styles\.\w{8}\.js$/.test(file)
41+
})
42+
43+
var initialFiles = uniq(Object.keys(stats.entrypoints)
44+
.map(function (name) { return stats.entrypoints[name].assets })
45+
.reduce(function (assets, all) { return all.concat(assets) }, [])
46+
.filter(function (file) { return isJS(file) || isCSS(file) }))
47+
.filter(file => {
48+
return !/styles\.\w{8}\.js$/.test(file)
49+
})
50+
51+
var asyncFiles = allFiles
52+
.filter(function (file) { return isJS(file) || isCSS(file) })
53+
.filter(function (file) { return initialFiles.indexOf(file) < 0 })
54+
55+
var manifest = {
56+
publicPath: stats.publicPath,
57+
all: allFiles,
58+
initial: initialFiles,
59+
async: asyncFiles,
60+
modules: { /* [identifier: string]: Array<index: number> */ }
61+
}
62+
63+
var assetModules = stats.modules.filter(function (m) { return m.assets.length })
64+
var fileToIndex = function (file) { return manifest.all.indexOf(file) }
65+
stats.modules.forEach(function (m) {
66+
// ignore modules duplicated in multiple chunks
67+
if (m.chunks.length === 1) {
68+
var cid = m.chunks[0]
69+
var chunk = stats.chunks.find(function (c) { return c.id === cid })
70+
if (!chunk || !chunk.files) {
71+
return
72+
}
73+
var id = m.identifier.replace(/\s\w+$/, '') // remove appended hash
74+
var files = manifest.modules[hash(id)] = chunk.files.map(fileToIndex)
75+
// find all asset modules associated with the same chunk
76+
assetModules.forEach(function (m) {
77+
if (m.chunks.some(function (id) { return id === cid })) {
78+
files.push.apply(files, m.assets.map(fileToIndex))
79+
}
80+
})
81+
}
82+
})
83+
84+
// const debug = (file, obj) => {
85+
// require('fs').writeFileSync(__dirname + '/' + file, JSON.stringify(obj, null, 2))
86+
// }
87+
// debug('stats.json', stats)
88+
// debug('client-manifest.json', manifest)
89+
90+
var json = JSON.stringify(manifest, null, 2)
91+
compilation.assets[this$1.options.filename] = {
92+
source: function () { return json },
93+
size: function () { return json.length }
94+
}
95+
cb()
96+
})
97+
}
98+
99+
module.exports = VueSSRClientPlugin

‎lib/webpack/serverConfig.js

+1-1
Original file line numberDiff line numberDiff line change
@@ -6,7 +6,7 @@ module.exports = function createServerConfig (options, cliOptions) {
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const VueSSRServerPlugin = require('vue-server-renderer/server-plugin')
77
const CopyPlugin = require('copy-webpack-plugin')
88

9-
const config = createBaseConfig(options, cliOptions)
9+
const config = createBaseConfig(options, cliOptions, true /* isServer */)
1010
const { sourceDir, outDir } = options
1111

1212
config

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