Fine-tune Terser to save some bytes

Author: philwareham

Gruntfile.js

@@ -218,6 +218,16 @@ module.exports = function (grunt)
 
         // Minify and copy JavaScript files from `node_modules` and from `src/js/` to `public/assets/js/`.
         terser: {
+            options: {
+                ecma: 2015,
+                compress: {
+                    booleans_as_integers: true,
+                    drop_console: true
+                },
+                format: {
+                    comments: false
+                }
+            },
             dist: {
                 files: [
                     {

package.json

@@ -24,7 +24,7 @@
     "grunt-replace-regex": "1.0.3",
     "grunt-sass": "3.1.0",
     "grunt-stylelint": "0.16.0",
-    "grunt-terser": "1.0.0",
+    "grunt-terser": "2.0.0",
     "load-grunt-tasks": "5.1.0",
     "sass": "1.32.5",
     "stylelint": "13.9.0",