/** Monotonic tick for animated components. Returns 0 and never starts a timer when inactive. */
export declare function useAnimationTick(active: boolean, intervalMs: number): number;
/**
 * Seconds since this became active.
 *
 * Deliberately not gated on CAPS.animation. A once-per-second counter is a status readout,
 * not decoration, and it matters most exactly where animation is switched off — CI, a
 * non-TTY pipe, a dumb terminal — because there a frozen number is the only clue left that
 * a run has hung. Gating it through the animation check froze it at mount in those cases.
 */
export declare function useElapsedSeconds(active: boolean): number;
/** Pulsing glyph shown while the agent is thinking. */
export declare function useThinkingAnimation(active: boolean, intervalMs?: number): string;
/**
 * A block that sweeps back and forth with a short trail behind it, pausing at each end.
 * Reads as sustained effort rather than an undifferentiated twirl, which is the point:
 * a spinner that looks identical at second 1 and second 90 tells you nothing.
 */
export declare function useScanner(active: boolean, width?: number, intervalMs?: number): string;
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