use-form/lib/helpers/isEmpty.js

use-form

"use strict";
exports.__esModule = true;
var typeOf_1 = require("./typeOf");
/**
 * isEmpty
 * @param {any} val
 * @return {Boolean}
 */
function isEmpty(val) {
    // Undefined...
    if ('undefined' === typeof val) {
        return true;
    }
    // Strings...
    if ('string' === typeof val) {
        return val.length === 0;
    }
    // Objects...
    if (typeOf_1.isObject(val)) {
        switch (val.toString()) {
            // Maps, Sets, Files and Errors...
            case '[object File]':
            case '[object Map]':
            case '[object Set]': {
                return val.size === 0;
            }
            // Plain objects...
            case '[object Object]': {
                for (var key in val) {
                    if (Object.prototype.hasOwnProperty.call(val, key)) {
                        return false;
                    }
                }
                return true;
            }
        }
    }
    // Anything else...
    return false;
}
exports["default"] = isEmpty;