export declare class SimplexNoise3D {
    private readonly _NORM_3D;
    private readonly _SQUISH_3D;
    private readonly _STRETCH_3D;
    private readonly _base3D;
    private readonly _gradients3D;
    private _lookup;
    private readonly _lookupPairs3D;
    private readonly _p3D;
    private _perm;
    private _perm3D;
    constructor();
    noise(x: number, y: number, z: number): number;
    seed(clientSeed: number): void;
    private _contribution3D;
}