import type { PhysicsWorld } from "./PhysicsWorld.js";
export type PhysicsStepperResult = {
    readonly steps: number;
    readonly alpha: number;
    readonly droppedTime: number;
};
export declare class PhysicsStepper {
    readonly fixedDelta: number;
    readonly maxSubSteps: number;
    private accumulator;
    constructor(fixedDelta: number, maxSubSteps?: number);
    advance(deltaSeconds: number, world: Pick<PhysicsWorld, "step">): PhysicsStepperResult;
    reset(): void;
}
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