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import { Utils } from './Utils';
export class NumberUtils {
     * @param {number} number
     * @returns {string}
    public static toHex(number: number | bigint): string {
        const radix: number = 16;
        const basePart: string = typeof number === 'number' ? number.toString(radix) : `${number.toString(radix)}n`;
        return `${Utils.hexadecimalPrefix}${basePart}`;
     * @param {number} number
     * @returns {[number, (number | null)]}
    public static extractIntegerAndDecimalParts(number: number): [number, number | null] {
        const integerPart: number = Math.trunc(number);
        const decimalPart: number | null = number !== integerPart ? number % 1 : null;
        return [integerPart, decimalPart];
     * @param {number} number
     * @returns {boolean}
    public static isCeil(number: number | bigint): boolean {
        return typeof number === 'number' ? number % 1 === 0 : true;
     * @param {number} number
     * @returns {boolean}
    public static isPositive(number: number): boolean {
        if (isNaN(number)) {
            throw new Error('Given value is NaN');
        if (number > 0) {
            return true;
        if (number < 0) {
            return false;
        if (1 / number === Number.POSITIVE_INFINITY) {
            return true;
        return false;
     * @param {number} number
     * @returns {boolean}
    public static isUnsafeNumber(number: number): boolean {
        if (isNaN(number)) {
            throw new Error('Given value is NaN');
        return number < Number.MIN_SAFE_INTEGER || number > Number.MAX_SAFE_INTEGER;
     * Returns all factors of a number
     * Based on https://stackoverflow.com/a/43204663
     * @param {number} number
     * @returns {number[]}
    public static getFactors(number: number): number[] {
        if (number === 0) {
            throw new Error('Invalid number. Allowed only non-zero number');
        number = Math.abs(number);
        // special case for 1
        if (number === 1) {
            return [-number, number];
        const factors: number[] = [];
        const root: number = Math.sqrt(number);
        const isEven: boolean = number % 2 === 0;
        const incrementValue: number = isEven ? 1 : 2;
        for (let currentFactor = 1; currentFactor <= root; currentFactor += incrementValue) {
            const compliment: number = number / currentFactor;
            const check = number - Math.floor(compliment) * currentFactor !== 0;
            if (check) {
                continue;
            factors.push(...[-currentFactor, currentFactor]);
            if (compliment !== currentFactor) {
                factors.push(...[-compliment, compliment]);
        return factors.sort((a: number, b: number) => a - b);

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