fix(gatsby): Prevent minifier from compressing output using ES6+ synt…

…ax (#9135)
gatsbyjs · Oct 16, 2018 · fed6d35 · fed6d35
1 parent 2707953
commit fed6d35
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/packages/gatsby/src/utils/webpack-utils.js b/packages/gatsby/src/utils/webpack-utils.js
@@ -445,8 +445,16 @@ module.exports = async ({
       exclude: /\.min\.js/,
       sourceMap: true,
       terserOptions: {
-        ecma: 8,
         ie8: false,
+        parse: {
+          ecma: 8,
+        },
+        compress: {
+          ecma: 5,
+        },
+        output: {
+          ecma: 5,
+        },
         ...terserOptions,
       },
       ...options,