Newer
Older
CVSS_3.0_GUI / node_modules / nwjs-builder-phoenix / node_modules / request / node_modules / extend / index.js
root on 7 May 2019 2 KB Initial commit
  1. 'use strict';
  2.  
  3. var hasOwn = Object.prototype.hasOwnProperty;
  4. var toStr = Object.prototype.toString;
  5.  
  6. var isArray = function isArray(arr) {
  7. if (typeof Array.isArray === 'function') {
  8. return Array.isArray(arr);
  9. }
  10.  
  11. return toStr.call(arr) === '[object Array]';
  12. };
  13.  
  14. var isPlainObject = function isPlainObject(obj) {
  15. if (!obj || toStr.call(obj) !== '[object Object]') {
  16. return false;
  17. }
  18.  
  19. var hasOwnConstructor = hasOwn.call(obj, 'constructor');
  20. var hasIsPrototypeOf = obj.constructor && obj.constructor.prototype && hasOwn.call(obj.constructor.prototype, 'isPrototypeOf');
  21. // Not own constructor property must be Object
  22. if (obj.constructor && !hasOwnConstructor && !hasIsPrototypeOf) {
  23. return false;
  24. }
  25.  
  26. // Own properties are enumerated firstly, so to speed up,
  27. // if last one is own, then all properties are own.
  28. var key;
  29. for (key in obj) { /**/ }
  30.  
  31. return typeof key === 'undefined' || hasOwn.call(obj, key);
  32. };
  33.  
  34. module.exports = function extend() {
  35. var options, name, src, copy, copyIsArray, clone;
  36. var target = arguments[0];
  37. var i = 1;
  38. var length = arguments.length;
  39. var deep = false;
  40.  
  41. // Handle a deep copy situation
  42. if (typeof target === 'boolean') {
  43. deep = target;
  44. target = arguments[1] || {};
  45. // skip the boolean and the target
  46. i = 2;
  47. }
  48. if (target == null || (typeof target !== 'object' && typeof target !== 'function')) {
  49. target = {};
  50. }
  51.  
  52. for (; i < length; ++i) {
  53. options = arguments[i];
  54. // Only deal with non-null/undefined values
  55. if (options != null) {
  56. // Extend the base object
  57. for (name in options) {
  58. src = target[name];
  59. copy = options[name];
  60.  
  61. // Prevent never-ending loop
  62. if (target !== copy) {
  63. // Recurse if we're merging plain objects or arrays
  64. if (deep && copy && (isPlainObject(copy) || (copyIsArray = isArray(copy)))) {
  65. if (copyIsArray) {
  66. copyIsArray = false;
  67. clone = src && isArray(src) ? src : [];
  68. } else {
  69. clone = src && isPlainObject(src) ? src : {};
  70. }
  71.  
  72. // Never move original objects, clone them
  73. target[name] = extend(deep, clone, copy);
  74.  
  75. // Don't bring in undefined values
  76. } else if (typeof copy !== 'undefined') {
  77. target[name] = copy;
  78. }
  79. }
  80. }
  81. }
  82. }
  83.  
  84. // Return the modified object
  85. return target;
  86. };
Buy Me A Coffee