Function transform

packages/csv-parse/lib/stream.js:19–24

(chunk)

        controller = ctr;
      },
      transform(chunk) {
        const error = api.parse(chunk, false, enqueue, terminate);
        if (error) {
          controller.error(error);
        }
      },
      flush() {
        const error = api.parse(undefined, true, enqueue, terminate);
        if (error) {