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Build: Prepare build for more script modules (WordPress#65064)
- Rename the "interactivity" webpack build to "script modules". - Output script-modules builds to `build-module` folder (adjacent to the `build` folder currently used for scripts). - Add `wpScriptModulesExports` package.json field to packages with script modules and use it for script module builds. This follows the same basic syntax as [package.json `exports` fields](https://nodejs.org/api/packages.html#exports). Multiple module entrypoints can be exposed per package. However, it remains a custom field, so it is clear that these entrypoints are not intended for general consumption. In the future, module-only packages (interactivity, interactivity-router) can switch to using exports directly and likely add `type: module`. - There are some difficulties with webpack recognizing `wpScriptModulesExports` directly, so packages are inspected programmatically in order to generate webpack script modules entrypoints. - Adjust script module registration accordingly to find the generated script modules. --- Co-authored-by: sirreal <[email protected]> Co-authored-by: gziolo <[email protected]> Co-authored-by: t-hamano <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| /** | ||
| * External dependencies | ||
| */ | ||
| const { join } = require( 'path' ); | ||
|
|
||
| /** | ||
| * WordPress dependencies | ||
| */ | ||
| const DependencyExtractionWebpackPlugin = require( '@wordpress/dependency-extraction-webpack-plugin' ); | ||
|
|
||
| /** | ||
| * Internal dependencies | ||
| */ | ||
| const { baseConfig, plugins } = require( './shared' ); | ||
|
|
||
| const WORDPRESS_NAMESPACE = '@wordpress/'; | ||
| const { createRequire } = require( 'node:module' ); | ||
|
|
||
| const rootURL = new URL( '..', `file://${ __dirname }` ); | ||
| const fromRootRequire = createRequire( rootURL ); | ||
|
|
||
| /** @type {Iterable<[string, string]>} */ | ||
| const iterableDeps = Object.entries( | ||
| fromRootRequire( './package.json' ).dependencies | ||
| ); | ||
|
|
||
| /** @type {Map<string, string>} */ | ||
| const gutenbergScriptModules = new Map(); | ||
| for ( const [ packageName, versionSpecifier ] of iterableDeps ) { | ||
| if ( | ||
| ! packageName.startsWith( WORDPRESS_NAMESPACE ) || | ||
| ! versionSpecifier.startsWith( 'file:' ) || | ||
| packageName.startsWith( WORDPRESS_NAMESPACE + 'react-native' ) | ||
| ) { | ||
| continue; | ||
| } | ||
|
|
||
| const packageRequire = createRequire( | ||
| // Remove the leading "file:" specifier to build a package URL. | ||
| new URL( `${ versionSpecifier.substring( 5 ) }/`, rootURL ) | ||
| ); | ||
|
|
||
| const depPackageJson = packageRequire( './package.json' ); | ||
| if ( ! Object.hasOwn( depPackageJson, 'wpScriptModuleExports' ) ) { | ||
| continue; | ||
| } | ||
|
|
||
| const moduleName = packageName.substring( WORDPRESS_NAMESPACE.length ); | ||
| let { wpScriptModuleExports } = depPackageJson; | ||
|
|
||
| // Special handling for { "wpScriptModuleExports": "./build-module/index.js" }. | ||
| if ( typeof wpScriptModuleExports === 'string' ) { | ||
| wpScriptModuleExports = { '.': wpScriptModuleExports }; | ||
| } | ||
|
|
||
| if ( Object.getPrototypeOf( wpScriptModuleExports ) !== Object.prototype ) { | ||
| throw new Error( 'wpScriptModuleExports must be an object' ); | ||
| } | ||
|
|
||
| for ( const [ exportName, exportPath ] of Object.entries( | ||
| wpScriptModuleExports | ||
| ) ) { | ||
| if ( typeof exportPath !== 'string' ) { | ||
| throw new Error( 'wpScriptModuleExports paths must be strings' ); | ||
| } | ||
|
|
||
| if ( ! exportPath.startsWith( './' ) ) { | ||
| throw new Error( | ||
| 'wpScriptModuleExports paths must start with "./"' | ||
| ); | ||
| } | ||
|
|
||
| const name = | ||
| exportName === '.' ? 'index' : exportName.replace( /^\.\/?/, '' ); | ||
|
|
||
| gutenbergScriptModules.set( | ||
| `${ moduleName }/${ name }`, | ||
| packageRequire.resolve( exportPath ) | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| module.exports = { | ||
| ...baseConfig, | ||
| name: 'script-modules', | ||
| entry: Object.fromEntries( gutenbergScriptModules.entries() ), | ||
| experiments: { | ||
| outputModule: true, | ||
| }, | ||
| output: { | ||
| devtoolNamespace: 'wp', | ||
| filename: './build-module/[name].min.js', | ||
| library: { | ||
| type: 'module', | ||
| }, | ||
| path: join( __dirname, '..', '..' ), | ||
| environment: { module: true }, | ||
| module: true, | ||
| chunkFormat: 'module', | ||
| asyncChunks: false, | ||
| }, | ||
| resolve: { | ||
| extensions: [ '.js', '.ts', '.tsx' ], | ||
| }, | ||
| module: { | ||
| rules: [ | ||
| { | ||
| test: /\.(j|t)sx?$/, | ||
| exclude: /node_modules/, | ||
| use: [ | ||
| { | ||
| loader: require.resolve( 'babel-loader' ), | ||
| options: { | ||
| cacheDirectory: | ||
| process.env.BABEL_CACHE_DIRECTORY || true, | ||
| babelrc: false, | ||
| configFile: false, | ||
| presets: [ | ||
| '@babel/preset-typescript', | ||
| '@babel/preset-react', | ||
| ], | ||
| }, | ||
| }, | ||
| ], | ||
| }, | ||
| ], | ||
| }, | ||
| plugins: [ ...plugins, new DependencyExtractionWebpackPlugin() ], | ||
| watchOptions: { | ||
| ignored: [ '**/node_modules' ], | ||
| aggregateTimeout: 500, | ||
| }, | ||
| }; |
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