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util.js
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util.js
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const { red, yellow } = require('chalk')
const webpack = require('webpack')
const prefix = `[vue-server-renderer-webpack-plugin]`
const warn = exports.warn = msg => console.error(red(`${prefix} ${msg}\n`))
const tip = exports.tip = msg => console.log(yellow(`${prefix} ${msg}\n`))
const isWebpack5 = !!(webpack.version && webpack.version[0] > 4)
export const validate = compiler => {
if (compiler.options.target !== 'node') {
warn('webpack config `target` should be "node".')
}
if (compiler.options.output) {
if (compiler.options.output.library) {
// Webpack >= 5.0.0
if (compiler.options.output.library.type !== 'commonjs2') {
warn('webpack config `output.library.type` should be "commonjs2".')
}
} else if (compiler.options.output.libraryTarget !== 'commonjs2') {
// Webpack < 5.0.0
warn('webpack config `output.libraryTarget` should be "commonjs2".')
}
}
if (!compiler.options.externals) {
tip(
'It is recommended to externalize dependencies in the server build for ' +
'better build performance.'
)
}
}
export const onEmit = (compiler, name, stageName, hook) => {
if (isWebpack5) {
// Webpack >= 5.0.0
compiler.hooks.compilation.tap(name, compilation => {
if (compilation.compiler !== compiler) {
// Ignore child compilers
return
}
const stage = webpack.Compilation[stageName]
compilation.hooks.processAssets.tapAsync({ name, stage }, (assets, cb) => {
hook(compilation, cb)
})
})
} else if (compiler.hooks) {
// Webpack >= 4.0.0
compiler.hooks.emit.tapAsync(name, hook)
} else {
// Webpack < 4.0.0
compiler.plugin('emit', hook)
}
}
export const stripModuleIdHash = id => {
if (isWebpack5) {
// Webpack >= 5.0.0
return id.replace(/\|\w+$/, '')
}
// Webpack < 5.0.0
return id.replace(/\s\w+$/, '')
}
export const getAssetName = asset => {
if (typeof asset === 'string') {
return asset
}
return asset.name
}
export { isJS, isCSS } from '../util'