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next.js/server/build/webpack.js

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import { resolve, join } from 'path'
import { createHash } from 'crypto'
import { existsSync } from 'fs'
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import webpack from 'webpack'
import glob from 'glob-promise'
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import WriteFilePlugin from 'write-file-webpack-plugin'
import FriendlyErrorsWebpackPlugin from 'friendly-errors-webpack-plugin'
import CaseSensitivePathPlugin from 'case-sensitive-paths-webpack-plugin'
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import UnlinkFilePlugin from './plugins/unlink-file-plugin'
import WatchPagesPlugin from './plugins/watch-pages-plugin'
import JsonPagesPlugin from './plugins/json-pages-plugin'
import getConfig from '../config'
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const documentPage = join('pages', '_document.js')
const defaultPages = [
'_error.js',
'_document.js'
]
const nextPagesDir = join(__dirname, '..', '..', 'pages')
const nextNodeModulesDir = join(__dirname, '..', '..', '..', 'node_modules')
const interpolateNames = new Map(defaultPages.map((p) => {
return [join(nextPagesDir, p), `dist/pages/${p}`]
}))
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export default async function createCompiler (dir, { dev = false, quiet = false } = {}) {
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dir = resolve(dir)
const config = getConfig(dir)
const defaultEntries = dev
? [join(__dirname, '..', '..', 'client/webpack-hot-middleware-client')] : []
const mainJS = dev
? require.resolve('../../client/next-dev') : require.resolve('../../client/next')
let minChunks
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const entry = async () => {
const entries = { 'main.js': mainJS }
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const pages = await glob('pages/**/*.js', { cwd: dir })
for (const p of pages) {
entries[join('bundles', p)] = [...defaultEntries, `./${p}?entry`]
}
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for (const p of defaultPages) {
const entryName = join('bundles', 'pages', p)
if (!entries[entryName]) {
entries[entryName] = [...defaultEntries, join(nextPagesDir, p) + '?entry']
}
}
// calculate minChunks of CommonsChunkPlugin for later use
minChunks = Math.max(2, pages.filter((p) => p !== documentPage).length)
return entries
}
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const plugins = [
new webpack.LoaderOptionsPlugin({
options: {
context: dir,
customInterpolateName (url, name, opts) {
return interpolateNames.get(this.resourcePath) || url
}
}
}),
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new WriteFilePlugin({
exitOnErrors: false,
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log: false,
// required not to cache removed files
useHashIndex: false
}),
new webpack.optimize.CommonsChunkPlugin({
name: 'commons',
filename: 'commons.js',
minChunks (module, count) {
// NOTE: it depends on the fact that the entry funtion is always called
// before applying CommonsChunkPlugin
return count >= minChunks
}
}),
new JsonPagesPlugin(),
new CaseSensitivePathPlugin()
]
if (dev) {
plugins.push(
new webpack.HotModuleReplacementPlugin(),
new webpack.NoEmitOnErrorsPlugin(),
new UnlinkFilePlugin(),
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new WatchPagesPlugin(dir)
)
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if (!quiet) {
plugins.push(new FriendlyErrorsWebpackPlugin())
}
} else {
plugins.push(
new webpack.DefinePlugin({
'process.env.NODE_ENV': JSON.stringify('production')
}),
new webpack.optimize.UglifyJsPlugin({
compress: { warnings: false },
sourceMap: false
})
)
}
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const nodePathList = (process.env.NODE_PATH || '')
.split(process.platform === 'win32' ? ';' : ':')
.filter((p) => !!p)
const mainBabelOptions = {
babelrc: true,
cacheDirectory: true,
sourceMaps: dev ? 'both' : false,
presets: []
}
const hasBabelRc = existsSync(join(dir, '.babelrc'))
if (hasBabelRc) {
console.log('> Using .babelrc defined in your app root')
} else {
mainBabelOptions.presets.push(require.resolve('./babel/preset'))
}
const rules = (dev ? [{
test: /\.js(\?[^?]*)?$/,
loader: 'hot-self-accept-loader',
include: [
join(dir, 'pages'),
nextPagesDir
]
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}, {
test: /\.js(\?[^?]*)?$/,
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loader: 'react-hot-loader/webpack',
exclude: /node_modules/
}] : [])
.concat([{
test: /\.json$/,
loader: 'json-loader'
}, {
test: /\.(js|json)(\?[^?]*)?$/,
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loader: 'emit-file-loader',
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include: [dir, nextPagesDir],
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exclude (str) {
return /node_modules/.test(str) && str.indexOf(nextPagesDir) !== 0
},
options: {
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name: 'dist/[path][name].[ext]'
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}
}, {
loader: 'babel-loader',
include: nextPagesDir,
exclude (str) {
return /node_modules/.test(str) && str.indexOf(nextPagesDir) !== 0
},
options: {
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babelrc: false,
cacheDirectory: true,
sourceMaps: dev ? 'both' : false,
presets: [require.resolve('./babel/preset')]
}
}, {
test: /\.js(\?[^?]*)?$/,
loader: 'babel-loader',
include: [dir],
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exclude (str) {
return /node_modules/.test(str)
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},
options: mainBabelOptions
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}])
let webpackConfig = {
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context: dir,
entry,
output: {
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path: join(dir, '.next'),
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filename: '[name]',
libraryTarget: 'commonjs2',
publicPath: '/_webpack/',
strictModuleExceptionHandling: true,
devtoolModuleFilenameTemplate ({ resourcePath }) {
const hash = createHash('sha1')
hash.update(Date.now() + '')
const id = hash.digest('hex').slice(0, 7)
// append hash id for cache busting
return `webpack:///${resourcePath}?${id}`
}
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},
resolve: {
modules: [
nextNodeModulesDir,
'node_modules',
...nodePathList
]
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},
resolveLoader: {
modules: [
nextNodeModulesDir,
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'node_modules',
join(__dirname, 'loaders'),
...nodePathList
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]
},
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plugins,
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module: {
rules
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},
devtool: dev ? 'inline-source-map' : false,
performance: { hints: false }
}
if (config.webpack) {
console.log('> Using "webpack" config function defined in next.config.js.')
webpackConfig = await config.webpack(webpackConfig, { dev })
}
return webpack(webpackConfig)
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}