omit.js (1629B)
1 var 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. */ 11 var 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 */ 35 var 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 57 module.exports = omit;