Compile Babylon with Gulp (#7240)

scripts/gulp-tasks.js

@@ -37,7 +37,6 @@ function webpackBuild(opts) {
       rules: [
         {
           test: /\.js$/,
-          include: /node_modules/,
           loader: "babel-loader",
           options: {
             // Some of the node_modules may have their own "babel" section in
@@ -53,32 +52,15 @@ function webpackBuild(opts) {
                 },
               ],
             ],
-          },
-        },
-        {
-          test: /\.js$/,
-          exclude: /node_modules/,
-          loader: "babel-loader",
-          options: {
-            // Some of the node_modules may have their own "babel" section in
-            // their project.json (or a ".babelrc" file). We need to ignore
-            // those as we're using our own Babel options.
-            babelrc: false,
-            presets: [
-              [
-                "@babel/env",
-                {
-                  loose: true,
-                  exclude: ["transform-typeof-symbol"],
-                },
-              ],
-              ["@babel/stage-0", { loose: true }],
+            overrides: [
+              {
+                exclude: /node_modules/,
+                presets: [["@babel/stage-0", { loose: true }]],
+              },
             ],
           },
         },
       ],
-      // babylon is already bundled and does not require parsing
-      noParse: [/babylon\/lib/],
     },
     node: {
       // Mock Node.js modules that Babel require()s but that we don't