TEST: Add a NS2 test (finally) (#458)

src/NetscriptJSEvaluator.ts

@@ -18,6 +18,22 @@ function makeScriptBlob(code: string): Blob {
   return new Blob([code], { type: "text/javascript" });
 }
 
+// Webpack likes to turn the import into a require, which sort of
+// but not really behaves like import. So we use a "magic comment"
+// to disable that and leave it as a dynamic import.
+//
+// However, we need to be able to replace this implementation in tests. Ideally
+// it would be fine, but Jest causes segfaults when using dynamic import: see
+// https://github.com/nodejs/node/issues/35889 and
+// https://github.com/facebook/jest/issues/11438
+// import() is not a function, so it can't be replaced. We need this separate
+// config object to provide a hook point.
+export const config = {
+  doImport(url: string): Promise<ScriptModule> {
+    return import(/*webpackIgnore:true*/ url);
+  },
+};
+
 export async function compile(script: Script, scripts: Script[]): Promise<ScriptModule> {
   //!shouldCompile ensures that script.module is non-null, hence the "as".
   if (!shouldCompile(script, scripts)) return script.module as Promise<ScriptModule>;
@@ -36,12 +52,7 @@ export async function compile(script: Script, scripts: Script[]): Promise<Script
   script.url = uurls[uurls.length - 1].url;
   // The URL at the top is the one we want to import. It will
   // recursively import all the other modules in the urlStack.
-  //
-  // Webpack likes to turn the import into a require, which sort of
-  // but not really behaves like import. Particularly, it cannot
-  // load fully dynamic content. So we hide the import from webpack
-  // by placing it inside an eval call.
-  script.module = new Promise((resolve) => resolve(eval("import(uurls[uurls.length - 1].url)")));
+  script.module = config.doImport(uurls[uurls.length - 1].url);
   script.dependencies = uurls;
   return script.module;
 }