Frame-callee-04.js

Enable keyboard shortcuts

// Frame.prototype.callee for an async generator function frame.

load(libdir + "asserts.js");

var g = newGlobal({ newCompartment: true });

var dbg = new Debugger(g);

g.eval(`

async function* f() { await Promise.resolve(); }

`);

const fObj = dbg.makeGlobalObjectReference(g).makeDebuggeeValue(g.f);

let frame;

let callee;

dbg.onEnterFrame = function(f) {

  frame = f;

  callee = frame.callee;

};

const it = g.f();

assertEq(frame instanceof Debugger.Frame, true);

assertEq(callee instanceof Debugger.Object, true);

assertEq(callee, fObj);

assertEq(frame.callee, callee);

let lastFrame = frame;

let lastCallee = callee;

frame = null;

callee = null;

const promise = it.next();

assertEq(callee, fObj);

assertEq(frame.callee, callee);

lastFrame = frame;

lastCallee = callee;

frame = null;

callee = null;

promise.then(() => {

  assertEq(frame, lastFrame);

  assertEq(callee, lastCallee);

  // The frame has finished evaluating, so the callee is no longer accessible.

  assertThrowsInstanceOf(() => frame.callee, Error);

});