1  /*!
 2   * has-values <https://github.com/jonschlinkert/has-values>
 3   *
 4   * Copyright (c) 2014-2015, 2017, Jon Schlinkert.
 5   * Released under the MIT License.
 6   */
 7  
 8  'use strict';
 9  
10  var typeOf = require('kind-of');
11  var isNumber = require('is-number');
12  
13  module.exports = function hasValue(val) {
14    // is-number checks for NaN and other edge cases
15    if (isNumber(val)) {
16      return true;
17    }
18  
19    switch (typeOf(val)) {
20      case 'null':
21      case 'boolean':
22      case 'function':
23        return true;
24      case 'string':
25      case 'arguments':
26        return val.length !== 0;
27      case 'error':
28        return val.message !== '';
29      case 'array':
30        var len = val.length;
31        if (len === 0) {
32          return false;
33        }
34        for (var i = 0; i < len; i++) {
35          if (hasValue(val[i])) {
36            return true;
37          }
38        }
39        return false;
40      case 'file':
41      case 'map':
42      case 'set':
43        return val.size !== 0;
44      case 'object':
45        var keys = Object.keys(val);
46        if (keys.length === 0) {
47          return false;
48        }
49        for (var i = 0; i < keys.length; i++) {
50          var key = keys[i];
51          if (hasValue(val[key])) {
52            return true;
53          }
54        }
55        return false;
56      default: {
57        return false;
58      }
59    }
60  };