export const SPINNER_FRAMES = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"] as const;

/**
 * 返回指定帧的 spinner 字符.
 *
 * @param frame 帧索引
 * @returns spinner 字符
 */
export function spinnerFrame(frame: number): string {
	const index = ((frame % SPINNER_FRAMES.length) + SPINNER_FRAMES.length) % SPINNER_FRAMES.length;
	return SPINNER_FRAMES[index] ?? SPINNER_FRAMES[0];
}