/** Base keyframe track - stores a sequence of timed values and interpolates between them. */
export declare class Track {
    #private;
    constructor(name: string, times: Float32Array | number[], values: Float32Array | number[], itemSize?: number);
    get name(): string;
    get times(): Float32Array;
    get values(): Float32Array;
    get itemSize(): number;
    /**
     * Linear interpolation between keyframes at index and index+1.
     * @param index Index of the keyframe just before time t
     * @param t0 Time of keyframe at index
     * @param t Current time
     * @param t1 Time of keyframe at index+1
     */
    interpolate(index: number, t0: number, t: number, t1: number): number[];
    /** Returns interpolated values at the given time using binary search. */
    getValueAtTime(time: number): number[];
}
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