import type { FrameDriver } from './driver';
/**
 * Test-only frame driver: frames are produced by calling `frame(timestampMs)`
 * manually, with full control over timestamps (and therefore deltas).
 * Not exported from the package entry point.
 */
export interface ManualDriver extends FrameDriver {
    /** Run all callbacks scheduled for the next frame, at the given timestamp. */
    frame(timestampMs: number): void;
    /** Number of callbacks currently waiting for the next frame. */
    pendingCount(): number;
    /** Total number of schedule() calls since creation (batching assertions). */
    scheduleCalls(): number;
}
export declare function createManualDriver(): ManualDriver;
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