export type CrankSample = {
    revolutions: number;
    time: number;
};
export declare class CrankCadenceCalculator {
    protected seedOnFirstSample: boolean;
    protected prev: {
        revolutions: number;
        time: number;
        cntUpdateMissing: number;
    } | undefined;
    protected timeOffset: number;
    protected rpm: number | undefined;
    constructor(seedOnFirstSample?: boolean);
    update(sample: CrankSample): {
        rpm: number | undefined;
        time: number | undefined;
    };
    reset(): void;
}