tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Frame-constructing-01.js (501B)

      1 // Debugger.Frame.prototype.constructing on a generator.
      2 
      3 load(libdir + "asserts.js");
      4 
      5 const g = newGlobal({ newCompartment: true });
      6 const dbg = Debugger(g);
      7 
      8 g.eval(`
      9 function* f() {}
     10 `);
     11 
     12 let frame;
     13 dbg.onEnterFrame = function(f) {
     14  frame = f;
     15  assertEq(frame.constructing, false);
     16 };
     17 
     18 const it = g.f();
     19 
     20 assertEq(frame.constructing, false);
     21 frame = null;
     22 
     23 it.next();
     24 
     25 assertEq(!!frame, true);
     26 // Throws because the frame has terminated.
     27 assertThrowsInstanceOf(() => frame.constructing, Error);