declare class Quaternion {
    x: number;
    y: number;
    z: number;
    w: number;
    constructor({ x, y, z, w }?: {
        x?: number;
        y?: number;
        z?: number;
        w?: number;
    });
    conjugate(): void;
    norm(): number;
    normalize(): void;
    invert(): void;
    multiply(q: Quaternion): void;
    clone(): Quaternion;
}
export default Quaternion;
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