7e380e3967
### What? Compiles Next.js core files using the same default target as client-side files, ensuring that `async`/`await` and such are not turned into generators. The client-side files are all opted into compilation during dev/build already so if you create a browserslist config that will still apply in the same way. This change only changes the output of the core files. ### How? Moved the default we use in Next.js into a separate `.js` file so that it can be imported from the taskfile-swc plugin, this way we're using the same defaults. <!-- Thanks for opening a PR! Your contribution is much appreciated. To make sure your PR is handled as smoothly as possible we request that you follow the checklist sections below. Choose the right checklist for the change(s) that you're making: ## For Contributors ### Improving Documentation or adding/fixing Examples - The "examples guidelines" are followed from our contributing doc https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md - Make sure the linting passes by running `pnpm build && pnpm lint`. See https://github.com/vercel/next.js/blob/canary/contributing/repository/linting.md ### Fixing a bug - Related issues linked using `fixes #number` - Tests added. See: https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs - Errors have a helpful link attached, see https://github.com/vercel/next.js/blob/canary/contributing.md ### Adding a feature - Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR. (A discussion must be opened, see https://github.com/vercel/next.js/discussions/new?category=ideas) - Related issues/discussions are linked using `fixes #number` - e2e tests added (https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs - Documentation added - Telemetry added. In case of a feature if it's used or not. - Errors have a helpful link attached, see https://github.com/vercel/next.js/blob/canary/contributing.md ## For Maintainers - Minimal description (aim for explaining to someone not on the team to understand the PR) - When linking to a Slack thread, you might want to share details of the conclusion - Link both the Linear (Fixes NEXT-xxx) and the GitHub issues - Add review comments if necessary to explain to the reviewer the logic behind a change ### What? ### Why? ### How? Closes NEXT- Fixes # -->
184 lines
5.3 KiB
JavaScript
184 lines
5.3 KiB
JavaScript
// taskr babel plugin with Babel 7 support
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// https://github.com/lukeed/taskr/pull/305
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const MODERN_BROWSERSLIST_TARGET = require('./src/shared/lib/modern-browserslist-target')
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const path = require('path')
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// eslint-disable-next-line import/no-extraneous-dependencies
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const transform = require('@swc/core').transform
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module.exports = function (task) {
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// eslint-disable-next-line require-yield
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task.plugin(
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'swc',
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{},
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function* (
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file,
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serverOrClient,
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{
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stripExtension,
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keepImportAssertions = false,
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interopClientDefaultExport = false,
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esm = false,
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} = {}
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) {
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// Don't compile .d.ts
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if (file.base.endsWith('.d.ts') || file.base.endsWith('.json')) return
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const isClient = serverOrClient === 'client'
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/** @type {import('@swc/core').Options} */
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const swcClientOptions = {
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module: {
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type: esm ? 'es6' : 'commonjs',
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ignoreDynamic: true,
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},
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env: {
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targets: MODERN_BROWSERSLIST_TARGET,
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},
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jsc: {
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loose: true,
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externalHelpers: true,
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parser: {
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syntax: 'typescript',
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dynamicImport: true,
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importAssertions: true,
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tsx: file.base.endsWith('.tsx'),
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},
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experimental: {
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keepImportAssertions,
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},
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transform: {
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react: {
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pragma: 'React.createElement',
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pragmaFrag: 'React.Fragment',
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throwIfNamespace: true,
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development: false,
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useBuiltins: true,
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},
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},
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},
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}
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/** @type {import('@swc/core').Options} */
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const swcServerOptions = {
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module: {
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type: esm ? 'es6' : 'commonjs',
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ignoreDynamic: true,
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},
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env: {
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targets: {
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// follow the version defined in packages/next/package.json#engine
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node: '14.18.0',
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},
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},
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jsc: {
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loose: true,
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// Do not enable external helpers on server-side files build
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// _is_native_funtion helper is not compatible with edge runtime (need investigate)
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externalHelpers: false,
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parser: {
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syntax: 'typescript',
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dynamicImport: true,
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importAssertions: true,
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tsx: file.base.endsWith('.tsx'),
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},
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experimental: {
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keepImportAssertions,
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},
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transform: {
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react: {
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pragma: 'React.createElement',
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pragmaFrag: 'React.Fragment',
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throwIfNamespace: true,
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development: false,
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useBuiltins: true,
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},
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},
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},
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}
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const swcOptions = isClient ? swcClientOptions : swcServerOptions
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const filePath = path.join(file.dir, file.base)
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const fullFilePath = path.join(__dirname, filePath)
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const distFilePath = path.dirname(
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// we must strip src from filePath as it isn't carried into
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// the dist file path
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path.join(__dirname, 'dist', filePath.replace(/^src[/\\]/, ''))
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)
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const options = {
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filename: path.join(file.dir, file.base),
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sourceMaps: true,
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inlineSourcesContent: false,
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sourceFileName: path.relative(distFilePath, fullFilePath),
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...swcOptions,
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}
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const source = file.data.toString('utf-8')
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const output = yield transform(source, options)
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const ext = path.extname(file.base)
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// Make sure the output content keeps the `"use client"` directive.
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// TODO: Remove this once SWC fixes the issue.
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if (/^['"]use client['"]/.test(source)) {
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output.code =
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'"use client";\n' +
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output.code
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.split('\n')
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.map((l) => (/^['"]use client['"]/.test(l) ? '' : l))
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.join('\n')
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}
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// Replace `.ts|.tsx` with `.js` in files with an extension
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if (ext) {
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const extRegex = new RegExp(ext.replace('.', '\\.') + '$', 'i')
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// Remove the extension if stripExtension is enabled or replace it with `.js`
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file.base = file.base.replace(extRegex, stripExtension ? '' : '.js')
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}
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if (output.map) {
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if (interopClientDefaultExport && !esm) {
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output.code += `
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if ((typeof exports.default === 'function' || (typeof exports.default === 'object' && exports.default !== null)) && typeof exports.default.__esModule === 'undefined') {
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Object.defineProperty(exports.default, '__esModule', { value: true });
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Object.assign(exports.default, exports);
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module.exports = exports.default;
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}
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`
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}
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const map = `${file.base}.map`
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output.code += Buffer.from(`\n//# sourceMappingURL=${map}`)
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// add sourcemap to `files` array
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this._.files.push({
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base: map,
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dir: file.dir,
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data: Buffer.from(output.map),
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})
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}
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file.data = Buffer.from(setNextVersion(output.code))
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}
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)
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}
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function setNextVersion(code) {
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return code
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.replace(
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/process\.env\.__NEXT_VERSION/g,
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`"${require('./package.json').version}"`
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)
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.replace(
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/process\.env\.REQUIRED_APP_REACT_VERSION/,
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`"${
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require('../../package.json').devDependencies[
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'react-server-dom-webpack'
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]
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}"`
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)
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}
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