Add uglify:emoji-loader to force top-level symbol minification

Author: westonruter

Gruntfile.js

@@ -838,8 +838,17 @@ module.exports = function(grunt) {
 					'!**/*.min.js',
 					'!wp-admin/js/custom-header.js', // Why? We should minify this.
 					'!wp-admin/js/farbtastic.js',
+					'!wp-includes/js/wp-emoji-loader.js', // This is a module. See the emoji-loader task below.
 				]
 			},
+			'emoji-loader': {
+				options: {
+					module: true,
+					toplevel: true,
+				},
+				src: WORKING_DIR + 'wp-includes/js/wp-emoji-loader.js',
+				dest: WORKING_DIR + 'wp-includes/js/wp-emoji-loader.min.js',
+			},
 			'jquery-ui': {
 				options: {
 					// Preserve comments that start with a bang.
@@ -1549,6 +1558,7 @@ module.exports = function(grunt) {
 
 	grunt.registerTask( 'uglify:all', [
 		'uglify:core',
+		'uglify:emoji-loader',
 		'uglify:jquery-ui',
 		'uglify:imgareaselect',
 		'uglify:jqueryform',