Code golfing

Author: squidfunk

src/worker/index.ts

@@ -75,10 +75,10 @@ export class IFrameWorker extends EventTarget implements Worker {
           "<script>" +
             `postMessage=${postMessage};` +
             `importScripts=${importScripts};` +
-            "addEventListener(\"error\",ev=>{" +
+            "addEventListener(\"error\",({error})=>{" +
               "parent.dispatchEvent(new ErrorEvent(\"error\",{" +
                 `filename:"${url}",` +
-                "error:ev.error" +
+                "error" +
               "}))" +
             "})" +
           "</script>" +

tsconfig.json

@@ -23,7 +23,7 @@
     "strictNullChecks": true,
     "strictPropertyInitialization": true,
     "stripInternal": true,
-    "target": "es2017"
+    "target": "es2020"
   },
   "include": [
     "src",