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libraries/splide-4.0.6/scripts/build-css.js

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+const sass         = require( 'sass' );
+const fs           = require( 'fs' ).promises;
+const path         = require( 'path' );
+const postcss      = require( 'postcss' );
+const cssnano      = require( 'cssnano' );
+const autoprefixer = require( 'autoprefixer' );
+const name         = 'splide';
+
+const files = [
+  './src/css/core/index.scss',
+  './src/css/themes/default/index.scss',
+  './src/css/themes/sea-green/index.scss',
+  './src/css/themes/skyblue/index.scss',
+];
+
+function buildCss( file ) {
+  const result  = sass.renderSync( { file, outputStyle: 'compressed' } );
+  const outFile = rename( file );
+
+  return postcss( [
+    cssnano( { reduceIdents: false } ),
+    autoprefixer(),
+  ] )
+    .process( result.css, { from: undefined } )
+    .then( result => {
+      result.warnings().forEach( warn => {
+        console.warn( warn.toString() );
+      } );
+
+      return fs.writeFile( outFile, result.css ).then( () => result );
+    } )
+    .then( result => {
+      if ( outFile.includes( 'splide-default' ) ) {
+        const dir = path.dirname( outFile ).split( '/' ).slice( 0, -1 ).join( '/' );
+        return fs.writeFile( `${ dir }/${ name }.min.css`, result.css ).then( () => result );
+      }
+    } );
+}
+
+function rename( file ) {
+  file = file.replace( './src/', '' );
+
+  const fragments = path.dirname( file ).split( '/' );
+  const dirname   = fragments.slice( 0, -1 ).join( '/' );
+  return `./dist/${ dirname }/${ name }-${ fragments[ fragments.length - 1 ] }.min.css`;
+}
+
+Promise.all( files.map( buildCss ) ).catch( e => console.error( e ) );
+
+exports.buildCss = () => {
+  files.forEach( buildCss );
+};