/**
 * Performance timing utility for measuring execution time.
 *
 * @example
 * ```typescript
 * const timer = new Timer("render", true);
 * // ... do some work ...
 * timer.split("tessellation complete");
 * // ... do more work ...
 * timer.stop();
 * ```
 *
 * @public
 */
declare class Timer {
    private prefix;
    private timeit;
    private start;
    private last;
    /**
     * Create a new Timer instance.
     *
     * @param prefix - Label prefix for log messages
     * @param timeit - If false, all timing operations are no-ops
     */
    constructor(prefix: string, timeit: boolean);
    /**
     * Log a split time (time since last split or start).
     *
     * @param msg - Message to include in the log output
     */
    split(msg: string): void;
    /**
     * Log total elapsed time and stop the timer.
     */
    stop(): void;
}
export { Timer };