Enable JS minifier compatibility options

alphagov · Dec 23, 2022 · b60dac3 · b60dac3
1 parent 8d54c23
commit b60dac3
Showing 1 changed file with 11 additions and 2 deletions.
diff --git a/tasks/compile-javascripts.mjs b/tasks/compile-javascripts.mjs
@@ -97,7 +97,6 @@ export async function compileJavaScript ([modulePath, { srcPath, destPath, minif
  */
 export function minifyJavaScript (modulePath, result) {
   const minified = minify({ [modulePath]: result.code }, {
-    ie8: true,
     warnings: true,
 
     // Include source maps
@@ -106,7 +105,17 @@ export function minifyJavaScript (modulePath, result) {
       filename: result.map.file,
       url: `${result.map.file}.map`,
       includeSources: true
-    }
+    },
+
+    // Compatibility workarounds
+    module: false,
+    ie8: true,
+    webkit: true,
+    v8: true,
+
+    // Preserve names
+    // e.g. Accordion.prototype.isExpanded()
+    keep_fnames: true
   })
 
   if (minified.warnings) {