/**
 * @fileoverview Check whether the given variable is existing or not.
 * @author NHN FE Development Lab <dl_javascript@nhn.com>
 */

'use strict';

var isUndefined = require('./isUndefined');
var isNull = require('./isNull');

/**
 * Check whether the given variable is existing or not.
 * If the given variable is not null and not undefined, returns true.
 * @param {*} param - Target for checking
 * @returns {boolean} Is existy?
 * @memberof module:type
 * @example
 * // ES6
 * import isExisty from 'tui-code-snippet/type/isExisty');
 * 
 * // CommonJS
 * const isExisty = require('tui-code-snippet/type/isExisty');
 *
 * isExisty(''); //true
 * isExisty(0); //true
 * isExisty([]); //true
 * isExisty({}); //true
 * isExisty(null); //false
 * isExisty(undefined); //false
*/
function isExisty(param) {
  return !isUndefined(param) && !isNull(param);
}

module.exports = isExisty;