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