Function source1

test/parallel/test-stream-iter-consumers-merge.js:114–120

()

  let source1Return = false;
  let source2Return = false;
  async function* source1() {
    try {
      while (true) yield [new TextEncoder().encode('a')];
    } finally {
      source1Return = true;
    }
  }

  async function* source2() {
    try {