RepositorySys/wwwroot/cropperjs-main/src/js/utilities.js

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import { IS_BROWSER, WINDOW } from './constants';

/**
 * Check if the given value is not a number.
 */
export const isNaN = Number.isNaN || WINDOW.isNaN;

/**
 * Check if the given value is a number.
 * @param {*} value - The value to check.
 * @returns {boolean} Returns `true` if the given value is a number, else `false`.
 */
export function isNumber(value) {
  return typeof value === 'number' && !isNaN(value);
}

/**
 * Check if the given value is a positive number.
 * @param {*} value - The value to check.
 * @returns {boolean} Returns `true` if the given value is a positive number, else `false`.
 */
export const isPositiveNumber = (value) => value > 0 && value < Infinity;

/**
 * Check if the given value is undefined.
 * @param {*} value - The value to check.
 * @returns {boolean} Returns `true` if the given value is undefined, else `false`.
 */
export function isUndefined(value) {
  return typeof value === 'undefined';
}

/**
 * Check if the given value is an object.
 * @param {*} value - The value to check.
 * @returns {boolean} Returns `true` if the given value is an object, else `false`.
 */
export function isObject(value) {
  return typeof value === 'object' && value !== null;
}

const { hasOwnProperty } = Object.prototype;

/**
 * Check if the given value is a plain object.
 * @param {*} value - The value to check.
 * @returns {boolean} Returns `true` if the given value is a plain object, else `false`.
 */
export function isPlainObject(value) {
  if (!isObject(value)) {
    return false;
  }

  try {
    const { constructor } = value;
    const { prototype } = constructor;

    return constructor && prototype && hasOwnProperty.call(prototype, 'isPrototypeOf');
  } catch (error) {
    return false;