Inline webpack hack

Author: aminya

src/master/implementation.node.ts

@@ -10,8 +10,12 @@ import {
   ThreadsWorkerOptions,
   WorkerImplementation
 } from "../types/master"
-import { isWebpack, requireFunction } from "../webpack-hack"
-export declare const __non_webpack_require__: typeof require
+
+// TODO remove webpack hacks. These hurt the performance for non-web-pack situations
+// Webpack hack
+declare const __non_webpack_require__: typeof require
+const isWebpack = typeof __non_webpack_require__ === "function"
+const requireFunction: typeof require = isWebpack ? __non_webpack_require__ : eval("require")
 
 interface WorkerGlobalScope {
   addEventListener(eventName: string, listener: (event: Event) => void): void