export interface FixedStepAdvance {
    readonly steps: number;
    readonly interpolation: number;
    readonly droppedMilliseconds: number;
}
/** Deterministic bounded scheduler shared by the host loop and simulation backend. */
export declare class FixedStepScheduler {
    #private;
    constructor(stepMilliseconds: number, maxSubsteps: number);
    advance(timestamp: number): FixedStepAdvance;
    reset(timestamp?: number): void;
}
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