webWorker support async

Author: Weedshaker

src/WebWorker.js

@@ -41,7 +41,9 @@ export const WebWorker = (ChosenHTMLElement = HTMLElement) => class WebWorker ex
     func = func.replace(/this\./g, '')
     func = func.replace(new RegExp(`${this.constructor.name}\\.`, 'g'), '')
     func = /^.*?=>.*?/.test(func) ? `(${func})` : !/^function/.test(func) ? `function ${func}` : func
-    const response = `onmessage=(event)=>{postMessage(${func}(...event.data))}`
+    func = func.replace(/(.*)async\s(.*)/s, 'await async $1$2') // fix async function
+    func = func.replace(/function\s#/, 'function ') // fix private functions
+    const response = `onmessage=async (event)=>{postMessage(${func}(...event.data))}`
     let blob
     try {
       blob = new Blob([response], { type: 'application/javascript' })