Switch from UglifyJS to Terser to build the polyfill script (#65278)

Co-authored-by: jsnajdr <jsnajdr@git.wordpress.org>
Co-authored-by: tyxla <tyxla@git.wordpress.org>
Co-authored-by: sgomes <sergiomdgomes@git.wordpress.org>

package.json

@@ -257,9 +257,9 @@
 		"storybook-source-link": "2.0.9",
 		"strip-json-comments": "5.0.0",
 		"style-loader": "3.2.1",
+		"terser": "5.32.0",
 		"terser-webpack-plugin": "5.3.9",
 		"typescript": "5.5.3",
-		"uglify-js": "3.13.7",
 		"uuid": "9.0.1",
 		"webdriverio": "8.16.20",
 		"webpack": "5.88.2",

packages/babel-preset-default/bin/index.js

@@ -4,7 +4,7 @@
  * External dependencies
  */
 const builder = require( 'core-js-builder' );
-const { minify } = require( 'uglify-js' );
+const { minify } = require( 'terser' );
 const { writeFile } = require( 'fs' ).promises;
 
 builder( {
@@ -18,15 +18,15 @@ builder( {
 	targets: require( '@wordpress/browserslist-config' ),
 	filename: './build/polyfill.js',
 } )
-	.then( async ( code ) => {
-		const output = minify( code, {
+	.then( ( code ) =>
+		minify( code, {
 			output: {
 				comments: ( node, comment ) =>
-					comment.value.indexOf( 'License' ) >= 0,
+					comment.value.toLowerCase().includes( 'license' ),
 			},
-		} );
-		await writeFile( './build/polyfill.min.js', output.code );
-	} )
+		} )
+	)
+	.then( ( output ) => writeFile( './build/polyfill.min.js', output.code ) )
 	.catch( ( error ) => {
 		// eslint-disable-next-line no-console
 		console.log( error );