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// Test that Debugger.Frame.prototype.older works on suspended async generators.
load(libdir + "asserts.js");
const g = newGlobal({ newCompartment: true });
const dbg = new Debugger(g);
g.eval(`
async function* f() {
await Promise.resolve();
}
`);
let frame;
dbg.onEnterFrame = f => {
frame = f;
dbg.onEnterFrame = undefined;
};
(async () => {
const it = g.f();
assertEq(frame.older, null);
const promise = it.next();
assertEq(frame.older, null);
await promise;
assertThrowsInstanceOf(() => frame.older, Error);
})();
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