1var arrayMap = require('./_arrayMap'),
2    baseClone = require('./_baseClone'),
3    baseUnset = require('./_baseUnset'),
4    castPath = require('./_castPath'),
5    copyObject = require('./_copyObject'),
6    customOmitClone = require('./_customOmitClone'),
7    flatRest = require('./_flatRest'),
8    getAllKeysIn = require('./_getAllKeysIn');
9
10/** Used to compose bitmasks for cloning. */
11var CLONE_DEEP_FLAG = 1,
12    CLONE_FLAT_FLAG = 2,
13    CLONE_SYMBOLS_FLAG = 4;
14
15/**
16 * The opposite of `_.pick`; this method creates an object composed of the
17 * own and inherited enumerable property paths of `object` that are not omitted.
18 *
19 * **Note:** This method is considerably slower than `_.pick`.
20 *
21 * @static
22 * @since 0.1.0
23 * @memberOf _
24 * @category Object
25 * @param {Object} object The source object.
26 * @param {...(string|string[])} [paths] The property paths to omit.
27 * @returns {Object} Returns the new object.
28 * @example
29 *
30 * var object = { 'a': 1, 'b': '2', 'c': 3 };
31 *
32 * _.omit(object, ['a', 'c']);
33 * // => { 'b': '2' }
34 */
35var omit = flatRest(function(object, paths) {
36  var result = {};
37  if (object == null) {
38    return result;
39  }
40  var isDeep = false;
41  paths = arrayMap(paths, function(path) {
42    path = castPath(path, object);
43    isDeep || (isDeep = path.length > 1);
44    return path;
45  });
46  copyObject(object, getAllKeysIn(object), result);
47  if (isDeep) {
48    result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
49  }
50  var length = paths.length;
51  while (length--) {
52    baseUnset(result, paths[length]);
53  }
54  return result;
55});
56
57module.exports = omit;
58