Function pull

deps/undici/undici.js:1962–1978

(controller)

            iterator = iterable[Symbol.asyncIterator]();
          },
          pull(controller) {
            return iterator.next().then(({ done, value }) => {
              if (done) {
                return queueMicrotask(() => {
                  controller.close();
                  controller.byobRequest?.respond(0);
                });
              } else {
                const buf = Buffer.isBuffer(value) ? value : Buffer.from(value);
                if (buf.byteLength) {
                  return controller.enqueue(new Uint8Array(buf));
                } else {
                  return this.pull(controller);
                }
              }
            });
          },
          cancel() {
            return iterator.return();
          },