declare global {
    interface NumberConstructor {
        /**
         * Generates a random number based on mean and sd (normal distribution)
         *
         * @param {number} mean
         * - Mean for normal distribution
         *
         * @param {number} sd
         * - Standard deviation for normal distribution
         *
         * @return {number}
         * - A random number base on normal distribution
         *
         * @example
         * Number.randomND(3, 1)  // might return 3.5
         * Number.randomND(3.2, 0)  // might return 3.2
         */
        randomND(mean: number, sd: number): number;
    }
}
export {};