Function mapper

test/basic.ts:47–50

([value, ms]: readonly number[])

	const queue = new PQueue({concurrency: 1});

	const mapper = async ([value, ms]: readonly number[]) => queue.add(async () => {
		await delay(ms!);
		return value!;
	});

	// eslint-disable-next-line unicorn/no-array-callback-reference
	assert.deepEqual(await Promise.all(input.map(mapper)), [10, 20, 30]);