78 lines
2.5 KiB
TypeScript
78 lines
2.5 KiB
TypeScript
import webpack, { Compiler, Plugin } from 'webpack'
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import sources from 'webpack-sources'
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import { PAGES_MANIFEST } from '../../../next-server/lib/constants'
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import getRouteFromEntrypoint from '../../../next-server/server/get-route-from-entrypoint'
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export type PagesManifest = { [page: string]: string }
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// @ts-ignore: TODO: remove ignore when webpack 5 is stable
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const { RawSource } = webpack.sources || sources
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const isWebpack5 = parseInt(webpack.version!) === 5
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// This plugin creates a pages-manifest.json from page entrypoints.
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// This is used for mapping paths like `/` to `.next/server/static/<buildid>/pages/index.js` when doing SSR
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// It's also used by next export to provide defaultPathMap
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export default class PagesManifestPlugin implements Plugin {
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serverless: boolean
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constructor(serverless: boolean) {
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this.serverless = serverless
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}
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createAssets(compilation: any, assets: any) {
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const entrypoints = compilation.entrypoints
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const pages: PagesManifest = {}
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for (const entrypoint of entrypoints.values()) {
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const pagePath = getRouteFromEntrypoint(entrypoint.name, this.serverless)
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if (!pagePath) {
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continue
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}
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const files = entrypoint
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.getFiles()
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.filter(
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(file: string) =>
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!file.includes('webpack-runtime') && file.endsWith('.js')
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)
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if (files.length > 1) {
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console.log(
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`Found more than one file in server entrypoint ${entrypoint.name}`,
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files
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)
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continue
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}
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// Write filename, replace any backslashes in path (on windows) with forwardslashes for cross-platform consistency.
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pages[pagePath] = files[0].replace(/\\/g, '/')
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}
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assets[PAGES_MANIFEST] = new RawSource(JSON.stringify(pages, null, 2))
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}
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apply(compiler: Compiler): void {
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if (isWebpack5) {
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compiler.hooks.make.tap('NextJsPagesManifest', (compilation) => {
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// @ts-ignore TODO: Remove ignore when webpack 5 is stable
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compilation.hooks.processAssets.tap(
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{
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name: 'NextJsPagesManifest',
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// @ts-ignore TODO: Remove ignore when webpack 5 is stable
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stage: webpack.Compilation.PROCESS_ASSETS_STAGE_ADDITIONS,
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},
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(assets: any) => {
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this.createAssets(compilation, assets)
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}
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)
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})
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return
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}
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compiler.hooks.emit.tap('NextJsPagesManifest', (compilation: any) => {
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this.createAssets(compilation, compilation.assets)
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})
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}
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}
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