Diffusion Ant (mir/gc) Code

ant/tests/repro_async_generator_reentrant_then.cjs
445f58992868mir/gc

repro_async_generator_reentrant_then.cjs
View Options

			function assert(cond, msg) {
			if (!cond) throw new Error(msg);
			}

			async function* delayedPair(tag) {
			await new Promise((resolve) => setTimeout(resolve, 0));
			yield tag + ":one";
			await new Promise((resolve) => setTimeout(resolve, 0));
			yield tag + ":two";
			}

			function runChain(iteration) {
			const it = delayedPair("chain:" + iteration);

			return it.next().then((first) => {
			console.log("first", iteration, JSON.stringify(first));
			assert(first.done === false, "first result should not be done");
			assert(first.value === "chain:" + iteration + ":one", "first result should yield first value");
			return it.next().then((second) => {
			console.log("second", iteration, JSON.stringify(second));
			assert(second.done === false, "second result should not be done");
			assert(second.value === "chain:" + iteration + ":two", "second result should yield second value");
			return it.next().then((third) => {
			console.log("third", iteration, JSON.stringify(third));
			assert(third.done === true, "third result should finish the iterator");
			});
			});
			});
			}

			async function main() {
			for (let i = 0; i < 128; i++) {
			if ((i & 31) === 0) console.log("iter", i);
			await runChain(i);
			}
			console.log("async generator reentrant then repro completed");
			}

			main().catch((err) => {
			console.error(err && err.stack ? err.stack : String(err));
			throw err;
			});

Owner Packages

No Owners