Remove 'ELECTRON_RUN_AS_NODE' env var on fork

src/vs/workbench/parts/debug/node/debugAdapter.ts

@@ -285,7 +285,8 @@ export class DebugAdapter extends StreamDebugAdapter {
 			if (this.adapterExecutable.command === 'node' && this.outputService) {
 				if (Array.isArray(this.adapterExecutable.args) && this.adapterExecutable.args.length > 0) {
 					const child = cp.fork(this.adapterExecutable.args[0], this.adapterExecutable.args.slice(1), {
-						stdio: ['pipe', 'pipe', 'pipe', 'ipc']
+						execArgv: [ '-e', 'delete process.env.ELECTRON_RUN_AS_NODE;require(process.argv[1])' ].concat(process.execArgv || []),
+						silent: true
 					});
 					if (!child.pid) {
 						e(new Error(nls.localize('unableToLaunchDebugAdapter', "Unable to launch debug adapter from '{0}'.", this.adapterExecutable.args[0])));