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client-entry-plugin.ts
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client-entry-plugin.ts
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import { stringify } from 'querystring'
import { webpack } from 'next/dist/compiled/webpack/webpack'
import {
EDGE_RUNTIME_WEBPACK,
NEXT_CLIENT_SSR_ENTRY_SUFFIX,
} from '../../../shared/lib/constants'
import { clientComponentRegex } from '../loaders/utils'
import { normalizePagePath } from '../../../shared/lib/page-path/normalize-page-path'
import { denormalizePagePath } from '../../../shared/lib/page-path/denormalize-page-path'
import {
getInvalidator,
entries,
} from '../../../server/dev/on-demand-entry-handler'
import { getPageStaticInfo } from '../../analysis/get-page-static-info'
import { SERVER_RUNTIME } from '../../../lib/constants'
type Options = {
dev: boolean
isEdgeServer: boolean
}
const PLUGIN_NAME = 'ClientEntryPlugin'
export const injectedClientEntries = new Map()
const regexCssGlobal = /(?<!\.module)\.css$/
export class ClientEntryPlugin {
dev: boolean = false
isEdgeServer: boolean
constructor(options: Options) {
if (typeof options.dev === 'boolean') {
this.dev = options.dev
}
this.isEdgeServer = options.isEdgeServer
}
apply(compiler: any) {
compiler.hooks.compilation.tap(
PLUGIN_NAME,
(compilation: any, { normalModuleFactory }: any) => {
compilation.dependencyFactories.set(
(webpack as any).dependencies.ModuleDependency,
normalModuleFactory
)
compilation.dependencyTemplates.set(
(webpack as any).dependencies.ModuleDependency,
new (webpack as any).dependencies.NullDependency.Template()
)
}
)
// Only for webpack 5
compiler.hooks.finishMake.tapAsync(
PLUGIN_NAME,
async (compilation: any, callback: any) => {
this.createClientEndpoints(compilation, callback)
}
)
}
async createClientEndpoints(compilation: any, callback: () => void) {
const context = (this as any).context
const promises: any = []
// For each SC server compilation entry, we need to create its corresponding
// client component entry.
for (const [name, entry] of compilation.entries.entries()) {
// Check if the page entry is a server component or not.
const entryDependency = entry.dependencies?.[0]
const request = entryDependency?.request
if (request && entry.options?.layer === 'sc_server') {
const visited = new Set()
const clientComponentImports: string[] = []
function filterClientComponents(dependency: any) {
const module = compilation.moduleGraph.getResolvedModule(dependency)
if (!module) return
const modRequest = module.userRequest
if (visited.has(modRequest)) return
visited.add(modRequest)
if (
clientComponentRegex.test(modRequest) ||
regexCssGlobal.test(modRequest)
) {
clientComponentImports.push(modRequest)
}
compilation.moduleGraph
.getOutgoingConnections(module)
.forEach((connection: any) => {
filterClientComponents(connection.dependency)
})
}
// Traverse the module graph to find all client components.
filterClientComponents(entryDependency)
const entryModule =
compilation.moduleGraph.getResolvedModule(entryDependency)
const routeInfo = entryModule.buildInfo.route || {
page: denormalizePagePath(name.replace(/^pages/, '')),
absolutePagePath: entryModule.resource,
}
// Parse gSSP and gSP exports from the page source.
const pageStaticInfo = this.isEdgeServer
? {}
: await getPageStaticInfo({
pageFilePath: routeInfo.absolutePagePath,
nextConfig: {},
isDev: this.dev,
})
const clientLoader = `next-flight-client-entry-loader?${stringify({
modules: clientComponentImports,
runtime: this.isEdgeServer
? SERVER_RUNTIME.edge
: SERVER_RUNTIME.nodejs,
ssr: pageStaticInfo.ssr,
// Adding name here to make the entry key unique.
name,
})}!`
const bundlePath = 'app' + normalizePagePath(routeInfo.page)
// Inject the entry to the client compiler.
if (this.dev) {
const pageKey = 'client' + routeInfo.page
if (!entries[pageKey]) {
entries[pageKey] = {
bundlePath,
absolutePagePath: routeInfo.absolutePagePath,
clientLoader,
dispose: false,
lastActiveTime: Date.now(),
} as any
const invalidator = getInvalidator()
if (invalidator) {
invalidator.invalidate()
}
}
} else {
injectedClientEntries.set(
bundlePath,
`next-client-pages-loader?${stringify({
isServerComponent: true,
page: denormalizePagePath(bundlePath.replace(/^pages/, '')),
absolutePagePath: clientLoader,
})}!` + clientLoader
)
}
// Inject the entry to the server compiler (__sc_client__).
const clientComponentEntryDep = (
webpack as any
).EntryPlugin.createDependency(clientLoader, {
name: name + NEXT_CLIENT_SSR_ENTRY_SUFFIX,
})
promises.push(
new Promise<void>((res, rej) => {
compilation.addEntry(
context,
clientComponentEntryDep,
this.isEdgeServer
? {
name: name + NEXT_CLIENT_SSR_ENTRY_SUFFIX,
library: {
name: ['self._CLIENT_ENTRY'],
type: 'assign',
},
runtime: EDGE_RUNTIME_WEBPACK,
asyncChunks: false,
}
: {
name: name + NEXT_CLIENT_SSR_ENTRY_SUFFIX,
runtime: 'webpack-runtime',
},
(err: any) => {
if (err) {
rej(err)
} else {
res()
}
}
)
})
)
}
}
Promise.all(promises)
.then(() => callback())
.catch(callback)
}
}