tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Frame-script-05.js (776B)

      1 // Frame.prototype.script for async function frames.
      2 
      3 load(libdir + "asserts.js");
      4 
      5 var g = newGlobal({ newCompartment: true });
      6 var dbg = new Debugger(g);
      7 g.eval(`
      8 async function f() {
      9  await Promise.resolve()
     10 }
     11 `);
     12 
     13 let frame;
     14 let script;
     15 dbg.onEnterFrame = function(f) {
     16  frame = f;
     17  script = frame.script;
     18 };
     19 
     20 const promise = g.f();
     21 
     22 assertEq(frame instanceof Debugger.Frame, true);
     23 assertEq(script instanceof Debugger.Script, true);
     24 assertEq(frame.script, script);
     25 
     26 const lastFrame = frame;
     27 const lastScript = script;
     28 frame = null;
     29 script = null;
     30 
     31 promise.then(() => {
     32  assertEq(frame, lastFrame);
     33  assertEq(script, lastScript);
     34 
     35  // The frame has finished evaluating, so the script is no longer accessible.
     36  assertThrowsInstanceOf(() => frame.script, Error);
     37 });