The Tor Browser / file revision

 /* Any copyright is dedicated to the Public Domain.

  * http://creativecommons.org/publicdomain/zero/1.0/ */

 // A for-of loop in Web Console code can loop over a content NodeList.

 const TEST_URI = "http://example.com/browser/browser/devtools/webconsole/test/test-for-of.html";

 function test() {

   addTab(TEST_URI);

   browser.addEventListener("load", function onLoad() {

     browser.removeEventListener("load", onLoad, true);

     openConsole(null, testForOf);

   }, true);

 }

 function testForOf(hud) {

   var jsterm = hud.jsterm;

   jsterm.execute("{ [x.tagName for (x of document.body.childNodes) if (x.nodeType === 1)].join(' '); }",

     (node) => {

       ok(/H1 DIV H2 P/.test(node.textContent),

         "for-of loop should find all top-level nodes");

       finishTest();

     });

 }