Fix function usage, add workaround for a Bun bug

index.ts

@@ -45,10 +45,11 @@ const getScreenshots = async function (resp: object, path: string): Promise<any>
 export default {
     port: 3000,
     async fetch(request: Request) {
+        await new Promise((r) => setTimeout(r, 1)); // https://github.com/oven-sh/bun/issues/1600
         let reqUrl = await parseUrl(request.url)
         let req = await request.json();
-        let promises = getScreenshots(req, reqUrl.path)
-        return Promise.all(promises).then((r) => {
+
+        return Promise.all(await getScreenshots(req, reqUrl.path)).then((r) => {
             let resp = Object.assign({}, req)
             resp.screenshots = r
             return resp