Frame-type-02.js - mozsearch

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// Debugger.Frame.prototype.type on a generator.

load(libdir + "asserts.js");

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

const dbg = Debugger(g);

g.eval(`

function* f() {}

`);

let frame;

dbg.onEnterFrame = function(f) {

  frame = f;

  assertEq(frame.type, "call");

};

const it = g.f();

assertEq(frame.type, "call");

frame = null;

it.next();

assertEq(!!frame, true);

// Throws because the frame has terminated.

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