Frame-script-05.js

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// Frame.prototype.script for async function frames.

load(libdir + "asserts.js");

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

var dbg = new Debugger(g);

g.eval(`

async function f() {

  await Promise.resolve()

`);

let frame;

let script;

dbg.onEnterFrame = function(f) {

  frame = f;

  script = frame.script;

};

const promise = g.f();

assertEq(frame instanceof Debugger.Frame, true);

assertEq(script instanceof Debugger.Script, true);

assertEq(frame.script, script);

const lastFrame = frame;

const lastScript = script;

frame = null;

script = null;

promise.then(() => {

  assertEq(frame, lastFrame);

  assertEq(script, lastScript);

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

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

});