Function withFlushSync

lib/internal/streams/iter/pull.js:504–507

* Apply a single stateful sync transform to a source. * @yields {Uint8Array[]}

(source)

 * @yields {Uint8Array[]}
 */
function* withFlushSync(source) {
  yield* source;
  yield null;
}

function* applyStatefulSyncTransform(source, transform) {
  const output = transform(withFlushSync(source));