diff --git a/webapp/package.json b/webapp/package.json
index 6e6c5a35..dec0ce98 100644
--- a/webapp/package.json
+++ b/webapp/package.json
@@ -1,12 +1,14 @@
 {
   "name": "noot",
   "version": "1.0.0",
-  "source": "src/index.html",
+  "source": [
+    "src/index.html"
+  ],
   "license": "MIT",
   "browserslist": "> 0.5%, last 2 versions, not dead",
   "scripts": {
-    "start": "parcel",
-    "build": "parcel build",
+    "start": "cp src/function_worker.js dist/ && parcel",
+    "build": "parcel build && cp src/function_worker.js dist/",
     "check-watch": "tsc --noEmit --watch"
   },
   "devDependencies": {
@@ -14,7 +16,11 @@
     "@types/react": "^17.0.39",
     "@types/react-dom": "^17.0.11",
     "parcel": "^2.3.2",
-    "typescript": ">=3.0.0"
+    "typescript": ">=3.0.0",
+    "uglify-js": "^3.15.1"
+  },
+  "resolutions": {
+    "@lezer/common": "git://github.com/zefhemel/common.git#046c880d1fcab713cadad327a5b7d8bb5de6522c"
   },
   "dependencies": {
     "@codemirror/basic-setup": "^0.19.1",
diff --git a/webapp/src/plugins/function_worker.ts b/webapp/src/function_worker.js
similarity index 75%
rename from webapp/src/plugins/function_worker.ts
rename to webapp/src/function_worker.js
index ec815570..191e3af7 100644
--- a/webapp/src/plugins/function_worker.ts
+++ b/webapp/src/function_worker.js
@@ -1,16 +1,16 @@
-function safeRun(fn: () => Promise<void>) {
+function safeRun(fn) {
   fn().catch((e) => {
     console.error(e);
   });
 }
 
 let func = null;
-let pendingRequests: {
-  [key: number]: any;
-} = {};
+let pendingRequests = {};
+
+console.log("hello world!");
 
 self.addEventListener("syscall", (event) => {
-  let customEvent = event as CustomEvent;
+  let customEvent = event;
   let detail = customEvent.detail;
   pendingRequests[detail.id] = detail.callback;
   self.postMessage({
@@ -22,7 +22,7 @@ self.addEventListener("syscall", (event) => {
 });
 
 self.addEventListener("result", (event) => {
-  let customEvent = event as CustomEvent;
+  let customEvent = event;
   self.postMessage({
     type: "result",
     result: customEvent.detail,
@@ -30,8 +30,8 @@ self.addEventListener("result", (event) => {
 });
 
 self.addEventListener("app-error", (event) => {
-  let customEvent = event as CustomEvent;
-  postMessage({
+  let customEvent = event;
+  self.postMessage({
     type: "error",
     reason: customEvent.detail,
   });
@@ -39,17 +39,12 @@ self.addEventListener("app-error", (event) => {
 
 self.addEventListener("message", (event) => {
   safeRun(async () => {
-    let messageEvent = event as MessageEvent;
+    let messageEvent = event;
     let data = messageEvent.data;
     switch (data.type) {
       case "boot":
         console.log("Booting", `./${data.prefix}/function/${data.name}`);
         importScripts(`./${data.prefix}/function/${data.name}`);
-        // if (data.userAgent && data.userAgent.indexOf("Firefox") !== -1) {
-        //   // @ts-ignore
-        // } else {
-        // await import(`./${data.prefix}/function/${data.name}`);
-        // }
         self.postMessage({
           type: "inited",
         });
diff --git a/webapp/src/plugins/runtime.ts b/webapp/src/plugins/runtime.ts
index 04f5920a..461e6bdb 100644
--- a/webapp/src/plugins/runtime.ts
+++ b/webapp/src/plugins/runtime.ts
@@ -22,7 +22,12 @@ export class FunctionWorker {
   private cartridge: Cartridge;
 
   constructor(cartridge: Cartridge, pathPrefix: string, name: string) {
-    this.worker = new Worker(new URL("function_worker.ts", import.meta.url));
+    // this.worker = new Worker(new URL("function_worker.ts", import.meta.url), {
+    //   type: "classic",
+    // });
+    let worker = window.Worker;
+    this.worker = new worker("function_worker.js");
+
     // console.log("Starting worker", this.worker);
     this.worker.onmessage = this.onmessage.bind(this);
     this.worker.postMessage({
diff --git a/webapp/yarn.lock b/webapp/yarn.lock
index cf8f71dd..ec2cbaac 100644
--- a/webapp/yarn.lock
+++ b/webapp/yarn.lock
@@ -280,10 +280,9 @@
     style-mod "^4.0.0"
     w3c-keyname "^2.2.4"
 
-"@lezer/common@^0.15.0", "@lezer/common@^0.15.5":
+"@lezer/common@^0.15.0", "@lezer/common@^0.15.5", "@lezer/common@git://github.com/zefhemel/common.git#046c880d1fcab713cadad327a5b7d8bb5de6522c":
   version "0.15.11"
-  resolved "https://registry.yarnpkg.com/@lezer/common/-/common-0.15.11.tgz#965b5067036305f12e8a3efc344076850be1d3a8"
-  integrity sha512-vv0nSdIaVCRcJ8rPuDdsrNVfBOYe/4Szr/LhF929XyDmBndLDuWiCCHooGlGlJfzELyO608AyDhVsuX/ZG36NA==
+  resolved "git://github.com/zefhemel/common.git#046c880d1fcab713cadad327a5b7d8bb5de6522c"
 
 "@lezer/css@^0.15.2":
   version "0.15.2"
@@ -1889,6 +1888,11 @@ typescript@>=3.0.0:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.5.5.tgz#d8c953832d28924a9e3d37c73d729c846c5896f3"
   integrity sha512-TCTIul70LyWe6IJWT8QSYeA54WQe8EjQFU4wY52Fasj5UKx88LNYKCgBEHcOMOrFF1rKGbD8v/xcNWVUq9SymA==
 
+uglify-js@^3.15.1:
+  version "3.15.1"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.15.1.tgz#9403dc6fa5695a6172a91bc983ea39f0f7c9086d"
+  integrity sha512-FAGKF12fWdkpvNJZENacOH0e/83eG6JyVQyanIJaBXCN1J11TUQv1T1/z8S+Z0CG0ZPk1nPcreF/c7lrTd0TEQ==
+
 util-deprecate@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"