rsnext/packages/next/build/webpack/plugins/pages-manifest-plugin.ts
Tim Neutkens c5cc6072d0
Use single webpack runtimeChunk for Node.js compilation (#14722)
Webpack 5 supports a single runtimechunk for the Node.js compilation, this solves sharing modules between entrypoints.
2020-07-01 15:34:00 +00:00

57 lines
1.8 KiB
TypeScript

import { Compiler, Plugin } from 'webpack'
import { RawSource } from 'webpack-sources'
import { PAGES_MANIFEST } from '../../../next-server/lib/constants'
import getRouteFromEntrypoint from '../../../next-server/server/get-route-from-entrypoint'
export type PagesManifest = { [page: string]: string }
// This plugin creates a pages-manifest.json from page entrypoints.
// This is used for mapping paths like `/` to `.next/server/static/<buildid>/pages/index.js` when doing SSR
// It's also used by next export to provide defaultPathMap
export default class PagesManifestPlugin implements Plugin {
serverless: boolean
constructor(serverless: boolean) {
this.serverless = serverless
}
apply(compiler: Compiler): void {
compiler.hooks.emit.tap('NextJsPagesManifest', (compilation) => {
const entrypoints = compilation.entrypoints
const pages: PagesManifest = {}
for (const entrypoint of entrypoints.values()) {
const pagePath = getRouteFromEntrypoint(
entrypoint.name,
this.serverless
)
if (!pagePath) {
continue
}
const files = entrypoint
.getFiles()
.filter(
(file: string) =>
!file.includes('webpack-runtime') && file.endsWith('.js')
)
if (files.length > 1) {
console.log(
`Found more than one file in server entrypoint ${entrypoint.name}`,
files
)
continue
}
// Write filename, replace any backslashes in path (on windows) with forwardslashes for cross-platform consistency.
pages[pagePath] = files[0].replace(/\\/g, '/')
}
compilation.assets[PAGES_MANIFEST] = new RawSource(
JSON.stringify(pages, null, 2)
)
})
}
}