test/emscripten_throw_string_pre.js - external/github.com/kripken/emscripten - Git at Google

 addEventListener('error', (event) => {
   globalThis.disableErrorReporting = true;
   var result = event.error === 'Hello!' ? 0 : 1;
   fetch('/report_result?' + result);
 });
	addEventListener('error', (event) => {
	globalThis.disableErrorReporting = true;
	var result = event.error === 'Hello!' ? 0 : 1;
	fetch('/report_result?' + result);
	});