Function createSpinner

src/output/progress.ts:9–39

(label: string)

}

export function createSpinner(label: string): Spinner {
  const isTTY = process.stderr.isTTY;
  let frame = 0;
  let interval: ReturnType<typeof setInterval> | null = null;
  let currentLabel = label;

  return {
    start() {
      if (!isTTY) return;
      interval = setInterval(() => {
        process.stderr.write(`\r${SPINNER_FRAMES[frame % SPINNER_FRAMES.length]} ${currentLabel}`);
        frame++;
      }, 80);
    },
    update(text: string) {
      currentLabel = text;
    },
    stop(finalText?: string) {
      if (interval) {
        clearInterval(interval);
        interval = null;
      }
      if (isTTY) {
        process.stderr.write('\r\x1b[K');
        if (finalText) {
          process.stderr.write(`${finalText}\n`);
        }
      }
    },
  };
}

export interface ProgressBar {
  update(current: number): void;