Move from UglifyJS to Terser for JavaScript minification

Author: philwareham

Gruntfile.js

@@ -216,8 +216,8 @@ module.exports = function (grunt)
             src: ['<%= paths.src.sass %>**/*.{css,scss}']
         },
 
-        // Uglify and copy JavaScript files from `node_modules` and from `src/js/` to `public/assets/js/`.
-        uglify: {
+        // Minify and copy JavaScript files from `node_modules` and from `src/js/` to `public/assets/js/`.
+        terser: {
             dist: {
                 files: [
                     {
@@ -274,7 +274,7 @@ module.exports = function (grunt)
     });
 
     // Register tasks.
-    grunt.registerTask('build', ['clean', 'concurrent', 'replace', 'uglify']);
+    grunt.registerTask('build', ['clean', 'concurrent', 'replace', 'terser']);
     grunt.registerTask('css', ['stylelint', 'sass', 'postcss']);
     grunt.registerTask('default', ['watch']);
     grunt.registerTask('travis', ['build']);

package.json

@@ -19,12 +19,12 @@
     "grunt-contrib-clean": "2.0.0",
     "grunt-contrib-copy": "1.0.0",
     "grunt-contrib-jshint": "3.0.0",
-    "grunt-contrib-uglify": "5.0.0",
     "grunt-contrib-watch": "1.1.0",
     "grunt-postcss": "0.9.0",
     "grunt-replace-regex": "1.0.3",
     "grunt-sass": "3.1.0",
     "grunt-stylelint": "0.16.0",
+    "grunt-terser": "1.0.0",
     "load-grunt-tasks": "5.1.0",
     "sass": "1.32.5",
     "stylelint": "13.9.0",