[test] Use JS string templates in test/browser_reporting.js. NFC (#22599)

Author: sbc100

test/browser_reporting.js

@@ -7,14 +7,14 @@ function reportResultToServer(result, port) {
   port = port || 8888;
   if (reportResultToServer.reported) {
     // Only report one result per test, even if the test misbehaves and tries to report more.
-    reportErrorToServer("excessive reported results, sending " + result + ", test will fail");
+    reportErrorToServer(`excessive reported results, sending ${result}, test will fail`);
   }
   reportResultToServer.reported = true;
   if ((typeof ENVIRONMENT_IS_NODE !== 'undefined' && ENVIRONMENT_IS_NODE) || (typeof ENVIRONMENT_IS_AUDIO_WORKLET !== 'undefined' && ENVIRONMENT_IS_AUDIO_WORKLET)) {
-    out('RESULT: ' + result);
+    out(`RESULT: ${result}`);
   } else {
     let doFetch = typeof origFetch != 'undefined' ? origFetch : fetch;
-    doFetch('http://localhost:' + port + '/report_result?' + result).then(() => {
+    doFetch(`http://localhost:${port}/report_result?${result}`).then(() => {
       if (typeof window === 'object' && window && hasModule && !Module['pageThrewException']) {
         /* for easy debugging, don't close window on failure */
         window.close();
@@ -35,15 +35,15 @@ function reportErrorToServer(message) {
   if (typeof ENVIRONMENT_IS_NODE !== 'undefined' && ENVIRONMENT_IS_NODE) {
     err(message);
   } else {
-    fetch(encodeURI('http://localhost:8888?stderr=' + message));
+    fetch(encodeURI(`http://localhost:8888?stderr=${message}`));
   }
 }
 
 function report_error(e) {
   // MINIMAL_RUNTIME doesn't handle exit or call the below onExit handler
   // so we detect the exit by parsing the uncaught exception message.
   var message = e.message || e;
-  console.error("got top level error: " + message);
+  console.error(`got top level error: ${message}`);
   if (window.disableErrorReporting) return;
   if (message.includes('unwind')) return;
   var offset = message.indexOf('exit(');
@@ -52,10 +52,10 @@ function report_error(e) {
     offset = status.indexOf(')')
     status = status.substr(0, offset)
     console.error(status);
-    var result = 'exit:' + status;
+    var result = `exit:${status}`;
   } else {
     if (hasModule) Module['pageThrewException'] = true;
-    result = 'exception:' + message + ' / ' + e.stack;
+    result = `exception:${message} / ${e.stack}`;
   }
   // FIXME: Ideally we would just reportResultToServer rather than the `maybe`
   // form but some browser tests currently report exceptions after exit.
@@ -75,7 +75,7 @@ if (hasModule) {
       // If Module['REPORT_EXIT'] is set to false, do not report the result of
       // onExit.
       if (Module['REPORT_EXIT'] !== false) {
-        maybeReportResultToServer('exit:' + status);
+        maybeReportResultToServer(`exit:${status}`);
       }
     }
     // Force these handlers to be proxied back to the main thread.
@@ -87,7 +87,7 @@ if (hasModule) {
 
   if (!Module['onAbort']) {
     Module['onAbort'] = function(reason) {
-      maybeReportResultToServer('abort:' + reason);
+      maybeReportResultToServer(`abort:${reason}`);
     }
     Module['onAbort'].proxy = true;
   }