webpack: explicitly ignore certain dirs when watching for changes

webpack/webpack.common.js

@@ -30,7 +30,15 @@ module.exports = {
         "window": "window"
     }],
     watchOptions: {
-        ignored: /dist/,
+        ignored: [
+            path.posix.resolve(__dirname, '../develop-eggs'),
+            path.posix.resolve(__dirname, '../dist'),
+            path.posix.resolve(__dirname, '../docs'),
+            path.posix.resolve(__dirname, '../node_modules'),
+            path.posix.resolve(__dirname, '../src/headless/dist'),
+            path.posix.resolve(__dirname, '../src/headless/node_modules'),
+            path.posix.resolve(__dirname, '../webpack'),
+        ],
     },
     module: {
         rules: [{