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// Test the promise property on generator function frames.
load(libdir + 'asserts.js');
var g = newGlobal({ newCompartment: true });
var dbg = Debugger(g);
g.eval(`
function* f() {
debugger;
yield;
debugger;
}
`);
let frame;
const promises = [];
dbg.onDebuggerStatement = function(f) {
frame = f;
promises.push(frame.asyncPromise);
};
const it = g.f();
assertEq(promises.length, 0);
it.next();
assertEq(frame.asyncPromise, undefined);
assertEq(promises.length, 1);
assertEq(promises[0], undefined);
it.next();
// Frame has terminated, so accessing the property throws.
assertThrowsInstanceOf(() => frame.asyncPromise, Error);
assertEq(promises.length, 2);
assertEq(promises[1], undefined);
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