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<title>[54307] trunk/tools/webpack: Tools: Fix running `build` scripts on Windows does not generate CSS files for blocks</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/54307">54307</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/54307","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>gziolo</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2022-09-26 11:20:43 +0000 (Mon, 26 Sep 2022)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Tools: Fix running `build` scripts on Windows does not generate CSS files for blocks

Starting with WordPress 6.0, when running `npm run build` or `npm run build:dev`, no CSS files were generated for the blocks within `wp-includes/blocks/**`.

Props wildworks, clorith, sergeybiryukov.
Fixes <a href="https://core.trac.wordpress.org/ticket/56616">#56616</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunktoolswebpackblocksjs">trunk/tools/webpack/blocks.js</a></li>
<li><a href="#trunktoolswebpackpackagesjs">trunk/tools/webpack/packages.js</a></li>
<li><a href="#trunktoolswebpacksharedjs">trunk/tools/webpack/shared.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunktoolswebpackblocksjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tools/webpack/blocks.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tools/webpack/blocks.js     2022-09-26 10:15:17 UTC (rev 54306)
+++ trunk/tools/webpack/blocks.js       2022-09-26 11:20:43 UTC (rev 54307)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3,7 +3,6 @@
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span><span class="cx" style="display: block; padding: 0 10px"> const { DefinePlugin } = require( 'webpack' );
</span><span class="cx" style="display: block; padding: 0 10px"> const CopyWebpackPlugin = require( 'copy-webpack-plugin' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-const { join } = require( 'path' );
</del><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px">  * WordPress dependencies
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -13,7 +12,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px">  * Internal dependencies
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-const { stylesTransform, baseConfig, baseDir } = require( './shared' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+const { normalizeJoin, stylesTransform, baseConfig, baseDir } = require( './shared' );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> module.exports = function( env = { environment: 'production', watch: false, buildTarget: false } ) {
</span><span class="cx" style="display: block; padding: 0 10px">        const mode = env.environment;
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -131,18 +130,18 @@
</span><span class="cx" style="display: block; padding: 0 10px">        };
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        const blockPHPCopies = Object.keys( blockPHPFiles ).map( ( filename ) => ( {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                from: join( baseDir, `node_modules/@wordpress/${ filename }` ),
-               to: join( baseDir, `src/${ blockPHPFiles[ filename ] }` ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         from: normalizeJoin(baseDir, `node_modules/@wordpress/${ filename }` ),
+               to: normalizeJoin(baseDir, `src/${ blockPHPFiles[ filename ] }` ),
</ins><span class="cx" style="display: block; padding: 0 10px">         } ) );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        const blockMetadataCopies = Object.keys( blockMetadataFiles ).map( ( filename ) => ( {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                from: join( baseDir, `node_modules/@wordpress/${ filename }` ),
-               to: join( baseDir, `src/${ blockMetadataFiles[ filename ] }` ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         from: normalizeJoin(baseDir, `node_modules/@wordpress/${ filename }` ),
+               to: normalizeJoin(baseDir, `src/${ blockMetadataFiles[ filename ] }` ),
</ins><span class="cx" style="display: block; padding: 0 10px">         } ) );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        const blockStylesheetCopies = blockFolders.map( ( blockName ) => ( {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                from: join( baseDir, `node_modules/@wordpress/block-library/build-style/${ blockName }/*.css` ),
-               to: join( baseDir, `${ buildTarget }/blocks/${ blockName }/[name]${ suffix }.css` ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         from: normalizeJoin(baseDir, `node_modules/@wordpress/block-library/build-style/${ blockName }/*.css` ),
+               to: normalizeJoin(baseDir, `${ buildTarget }/blocks/${ blockName }/[name]${ suffix }.css` ),
</ins><span class="cx" style="display: block; padding: 0 10px">                 transform: stylesTransform( mode ),
</span><span class="cx" style="display: block; padding: 0 10px">                noErrorOnMissing: true,
</span><span class="cx" style="display: block; padding: 0 10px">        } ) );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -150,14 +149,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">        const config = {
</span><span class="cx" style="display: block; padding: 0 10px">                ...baseConfig( env ),
</span><span class="cx" style="display: block; padding: 0 10px">                entry: {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        'file/view': join( baseDir, `node_modules/@wordpress/block-library/build-module/file/view` ),
-                       'navigation/view': join( baseDir, `node_modules/@wordpress/block-library/build-module/navigation/view` ),
-                       'navigation/view-modal': join( baseDir, `node_modules/@wordpress/block-library/build-module/navigation/view-modal` ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 'file/view': normalizeJoin(baseDir, `node_modules/@wordpress/block-library/build-module/file/view` ),
+                       'navigation/view': normalizeJoin(baseDir, `node_modules/@wordpress/block-library/build-module/navigation/view` ),
+                       'navigation/view-modal': normalizeJoin(baseDir, `node_modules/@wordpress/block-library/build-module/navigation/view-modal` ),
</ins><span class="cx" style="display: block; padding: 0 10px">                 },
</span><span class="cx" style="display: block; padding: 0 10px">                output: {
</span><span class="cx" style="display: block; padding: 0 10px">                        devtoolNamespace: 'wp',
</span><span class="cx" style="display: block; padding: 0 10px">                        filename: `[name]${ suffix }.js`,
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        path: join( baseDir, `${ buildTarget }/blocks` ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 path: normalizeJoin(baseDir, `${ buildTarget }/blocks` ),
</ins><span class="cx" style="display: block; padding: 0 10px">                 },
</span><span class="cx" style="display: block; padding: 0 10px">                plugins: [
</span><span class="cx" style="display: block; padding: 0 10px">                        new DefinePlugin( {
</span></span></pre></div>
<a id="trunktoolswebpackpackagesjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tools/webpack/packages.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tools/webpack/packages.js   2022-09-26 10:15:17 UTC (rev 54306)
+++ trunk/tools/webpack/packages.js     2022-09-26 11:20:43 UTC (rev 54307)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -5,7 +5,6 @@
</span><span class="cx" style="display: block; padding: 0 10px"> const CopyWebpackPlugin = require( 'copy-webpack-plugin' );
</span><span class="cx" style="display: block; padding: 0 10px"> const LiveReloadPlugin = require( 'webpack-livereload-plugin' );
</span><span class="cx" style="display: block; padding: 0 10px"> const UglifyJS = require( 'uglify-js' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-const { join } = require( 'path' );
</del><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px">  * WordPress dependencies
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -18,7 +17,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px">  * Internal dependencies
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-const { stylesTransform, baseConfig, baseDir } = require( './shared' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+const { normalizeJoin, stylesTransform, baseConfig, baseDir } = require( './shared' );
</ins><span class="cx" style="display: block; padding: 0 10px"> const { dependencies } = require( '../../package' );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> const exportDefaultPackages = [
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -42,8 +41,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span><span class="cx" style="display: block; padding: 0 10px"> function mapVendorCopies( vendors, buildTarget ) {
</span><span class="cx" style="display: block; padding: 0 10px">        return Object.keys( vendors ).map( ( filename ) => ( {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                from: join( baseDir, `node_modules/${ vendors[ filename ] }` ),
-               to: join( baseDir, `${ buildTarget }/js/dist/vendor/${ filename }` ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         from: normalizeJoin(baseDir, `node_modules/${ vendors[ filename ] }` ),
+               to: normalizeJoin(baseDir, `${ buildTarget }/js/dist/vendor/${ filename }` ),
</ins><span class="cx" style="display: block; padding: 0 10px">         } ) );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -115,15 +114,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">        let vendorCopies = mode === "development" ? developmentCopies : [ ...minifiedCopies, ...minifyCopies ];
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        let cssCopies = packages.map( ( packageName ) => ( {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                from: join( baseDir, `node_modules/@wordpress/${ packageName }/build-style/*.css` ),
-               to: join( baseDir, `${ buildTarget }/css/dist/${ packageName }/[name]${ suffix }.css` ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         from: normalizeJoin(baseDir, `node_modules/@wordpress/${ packageName }/build-style/*.css` ),
+               to: normalizeJoin(baseDir, `${ buildTarget }/css/dist/${ packageName }/[name]${ suffix }.css` ),
</ins><span class="cx" style="display: block; padding: 0 10px">                 transform: stylesTransform( mode ),
</span><span class="cx" style="display: block; padding: 0 10px">                noErrorOnMissing: true,
</span><span class="cx" style="display: block; padding: 0 10px">        } ) );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        const phpCopies = Object.keys( phpFiles ).map( ( filename ) => ( {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                from: join( baseDir, `node_modules/@wordpress/${ filename }` ),
-               to: join( baseDir, `src/${ phpFiles[ filename ] }` ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         from: normalizeJoin(baseDir, `node_modules/@wordpress/${ filename }` ),
+               to: normalizeJoin(baseDir, `src/${ phpFiles[ filename ] }` ),
</ins><span class="cx" style="display: block; padding: 0 10px">         } ) );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        const config = {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -130,7 +129,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                ...baseConfig( env ),
</span><span class="cx" style="display: block; padding: 0 10px">                entry: packages.reduce( ( memo, packageName ) => {
</span><span class="cx" style="display: block; padding: 0 10px">                        memo[ packageName ] = {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                import: join( baseDir, `node_modules/@wordpress/${ packageName }` ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         import: normalizeJoin(baseDir, `node_modules/@wordpress/${ packageName }` ),
</ins><span class="cx" style="display: block; padding: 0 10px">                                 library: {
</span><span class="cx" style="display: block; padding: 0 10px">                                        name: [ 'wp', camelCaseDash( packageName ) ],
</span><span class="cx" style="display: block; padding: 0 10px">                                        type: 'window',
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -145,7 +144,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                output: {
</span><span class="cx" style="display: block; padding: 0 10px">                        devtoolNamespace: 'wp',
</span><span class="cx" style="display: block; padding: 0 10px">                        filename: `[name]${ suffix }.js`,
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        path: join( baseDir, `${ buildTarget }/js/dist` ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 path: normalizeJoin(baseDir, `${ buildTarget }/js/dist` ),
</ins><span class="cx" style="display: block; padding: 0 10px">                 },
</span><span class="cx" style="display: block; padding: 0 10px">                plugins: [
</span><span class="cx" style="display: block; padding: 0 10px">                        new DefinePlugin( {
</span></span></pre></div>
<a id="trunktoolswebpacksharedjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tools/webpack/shared.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tools/webpack/shared.js     2022-09-26 10:15:17 UTC (rev 54306)
+++ trunk/tools/webpack/shared.js       2022-09-26 11:20:43 UTC (rev 54307)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -69,8 +69,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">        return content;
</span><span class="cx" style="display: block; padding: 0 10px"> };
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+const normalizeJoin = ( ...paths ) => join( ...paths ).replace( /\\/g, '/' );
+
+
</ins><span class="cx" style="display: block; padding: 0 10px"> module.exports = {
</span><span class="cx" style="display: block; padding: 0 10px">        baseDir,
</span><span class="cx" style="display: block; padding: 0 10px">        baseConfig,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        normalizeJoin,
</ins><span class="cx" style="display: block; padding: 0 10px">         stylesTransform,
</span><span class="cx" style="display: block; padding: 0 10px"> };
</span></span></pre>
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