/**
 * Modified version of XORShift 64 bit PRNG. This is designed more for speed
 * rather than randomness, however it is still more random than the standard
 * Math.random() function and is faster too
 *
 * Based on XORShift 64 bit Java Implementation at https://jvm-gaming.org/t/random-number-generator/39968
 */
export declare class Random64 {
    private static readonly _instance;
    private _seed;
    constructor(seed?: number);
    /**
     * Get the next random number
     */
    next(): number;
    /**
     * Get the next random number from a static instance of the PRNG
     */
    static next(): number;
    /**
     * Returns a random number between min and max
     *
     * @param min - the minimum value to use
     * @param max - the maximum value to use
     */
    rand(min: number, max: number): number;
    /**
     * Returns a random number between min and max from a static instance of the PRNG
     *
     * @param min - the minimum value to use
     * @param max - the maximum value to use
     */
    static rand(min: number, max: number): number;
}