Fix 'npm run package' in addon-unicode-graphemes

Author: PerBothner

addons/addon-unicode-graphemes/webpack.config.js

@@ -25,7 +25,8 @@ module.exports = {
     modules: ['./node_modules'],
     extensions: [ '.js' ],
     alias: {
-      common: path.resolve('../../out/common')
+      common: path.resolve('../../out/common'),
+      vs: path.resolve('../../out/vs')
     }
   },
   output: {