71 lines
2 KiB
TypeScript
71 lines
2 KiB
TypeScript
import path from 'path'
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import { Worker } from 'jest-worker'
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import * as Log from '../build/output/log'
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import { CheckReasons, CheckResult } from './config-utils-worker'
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import { install, shouldLoadWithWebpack5 } from './config-utils-worker'
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import { PHASE_PRODUCTION_SERVER } from '../shared/lib/constants'
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import { getNodeOptionsWithoutInspect } from './lib/utils'
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export { install, shouldLoadWithWebpack5 }
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function reasonMessage(reason: CheckReasons) {
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switch (reason) {
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case 'default':
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return 'Enabled by default'
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case 'flag-disabled':
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return 'webpack5 flag is set to false in next.config.js'
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case 'test-mode':
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return 'internal test mode'
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default:
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return ''
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}
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}
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export async function loadWebpackHook(phase: string, dir: string) {
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let useWebpack5 = true
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let usesRemovedFlag = false
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const worker = new Worker(
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path.resolve(__dirname, './config-utils-worker.js'),
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{
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enableWorkerThreads: false,
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numWorkers: 1,
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forkOptions: {
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env: {
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...process.env,
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NODE_OPTIONS: getNodeOptionsWithoutInspect(),
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},
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},
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}
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) as Worker & {
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shouldLoadWithWebpack5: typeof import('./config-utils-worker').shouldLoadWithWebpack5
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}
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try {
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const result: CheckResult = await worker.shouldLoadWithWebpack5(phase, dir)
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if (result.reason === 'future-flag') {
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usesRemovedFlag = true
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} else {
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if (phase !== PHASE_PRODUCTION_SERVER) {
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Log.info(
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`Using webpack ${result.enabled ? '5' : '4'}. Reason: ${reasonMessage(
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result.reason
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)} https://nextjs.org/docs/messages/webpack5`
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)
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}
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}
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useWebpack5 = Boolean(result.enabled)
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} catch {
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// If this errors, it likely will do so again upon boot, so we just swallow
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// it here.
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} finally {
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worker.end()
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}
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if (usesRemovedFlag) {
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throw new Error(
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'`future.webpack5` in `next.config.js` has moved to the top level `webpack5` flag https://nextjs.org/docs/messages/future-webpack5-moved-to-webpack5'
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)
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}
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install(useWebpack5)
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}
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