fix(@angular/cli): Reenable node global

Author: Brocco

packages/@angular/cli/models/webpack-configs/browser.ts

@@ -116,7 +116,7 @@ export function getBrowserConfig(wco: WebpackConfigOptions) {
     ].concat(extraPlugins),
     node: {
       fs: 'empty',
-      global: false,
+      global: true,
       crypto: 'empty',
       tls: 'empty',
       net: 'empty',