Frame-type-03.js - mozsearch

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// Debugger.Frame.prototype.type on an async function.

load(libdir + "asserts.js");

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

const dbg = Debugger(g);

g.eval(`

async function f() {

  await Promise.resolve();

`);

let frame;

dbg.onEnterFrame = function(f) {

  frame = f;

  assertEq(frame.type, "call");

};

(async () => {

  const promise = g.f();

  assertEq(frame.type, "call");

  frame = null;

  await promise;

  assertEq(!!frame, true);

  // Throws because the frame has terminated.

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

})();