Nuxt/lib/builder/webpack/plugins/vue/server.js

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2018-03-16 16:12:06 +00:00
import { validate, isJS, onEmit } from './util'
2018-03-16 16:12:06 +00:00
export default class VueSSRServerPlugin {
constructor(options = {}) {
this.options = Object.assign({
filename: 'vue-ssr-server-bundle.json'
}, options)
}
apply(compiler) {
validate(compiler)
onEmit(compiler, 'vue-server-plugin', (compilation, cb) => {
const stats = compilation.getStats().toJson()
const entryName = Object.keys(stats.entrypoints)[0]
const entryInfo = stats.entrypoints[entryName]
if (!entryInfo) {
// #5553
return cb()
}
const entryAssets = entryInfo.assets.filter(isJS)
if (entryAssets.length > 1) {
throw new Error(
`Server-side bundle should have one single entry file. ` +
`Avoid using CommonsChunkPlugin in the server config.`
)
}
const entry = entryAssets[0]
if (!entry || typeof entry !== 'string') {
throw new Error(
`Entry "${entryName}" not found. Did you specify the correct entry option?`
)
}
const bundle = {
entry,
files: {},
maps: {}
}
stats.assets.forEach(asset => {
if (asset.name.match(/\.js$/)) {
bundle.files[asset.name] = compilation.assets[asset.name].source()
} else if (asset.name.match(/\.js\.map$/)) {
bundle.maps[asset.name.replace(/\.map$/, '')] = JSON.parse(compilation.assets[asset.name].source())
}
// do not emit anything else for server
delete compilation.assets[asset.name]
})
const json = JSON.stringify(bundle, null, 2)
const filename = this.options.filename
compilation.assets[filename] = {
source: () => json,
size: () => json.length
}
cb()
})
}
}