chromium/src/third_party/blink/web_tests/external/wpt/service-workers/service-worker/resources/postmessage-fetched-text.js - manifest_repos/chromium_src - Git at Google

 self.onmessage = async (e) => {
   const response = await fetch(e.data);
   const text = await response.text();
   self.postMessage(text);
 };
	self.onmessage = async (e) => {
	const response = await fetch(e.data);
	const text = await response.text();
	self.postMessage(text);
	};