clearTimeout undefined cost (v3)

Revision 3 of this benchmark created on

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clearTimeout undefined cost
// attempt to prevent the optimizer from knowing t is certainly undefined
const t = Math.random() > .5 ? undefined : setTimeout(()=>{});
clearTimeout(t);
ready
clearTimeout undefined cost bail
// attempt to prevent the optimizer from knowing t is certainly undefined
const t = Math.random() > .5 ? undefined : setTimeout(()=>{});
if (t) clearTimeout(t)
ready

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