Bump to v3.0.0.

object/assign.js

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+import baseAssign from '../internal/baseAssign';
+import createAssigner from '../internal/createAssigner';
+
+/**
+ * Assigns own enumerable properties of source object(s) to the destination
+ * object. Subsequent sources overwrite property assignments of previous sources.
+ * If `customizer` is provided it is invoked to produce the assigned values.
+ * The `customizer` is bound to `thisArg` and invoked with five arguments;
+ * (objectValue, sourceValue, key, object, source).
+ *
+ * @static
+ * @memberOf _
+ * @alias extend
+ * @category Object
+ * @param {Object} object The destination object.
+ * @param {...Object} [sources] The source objects.
+ * @param {Function} [customizer] The function to customize assigning values.
+ * @param {*} [thisArg] The `this` binding of `customizer`.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * _.assign({ 'user': 'barney' }, { 'age': 40 }, { 'user': 'fred' });
+ * // => { 'user': 'fred', 'age': 40 }
+ *
+ * // using a customizer callback
+ * var defaults = _.partialRight(_.assign, function(value, other) {
+ *   return typeof value == 'undefined' ? other : value;
+ * });
+ *
+ * defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' });
+ * // => { 'user': 'barney', 'age': 36 }
+ */
+var assign = createAssigner(baseAssign);
+
+export default assign;

object/create.js

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+import baseCopy from '../internal/baseCopy';
+import baseCreate from '../internal/baseCreate';
+import isIterateeCall from '../internal/isIterateeCall';
+import keys from './keys';
+
+/**
+ * Creates an object that inherits from the given `prototype` object. If a
+ * `properties` object is provided its own enumerable properties are assigned
+ * to the created object.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} prototype The object to inherit from.
+ * @param {Object} [properties] The properties to assign to the object.
+ * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
+ * @returns {Object} Returns the new object.
+ * @example
+ *
+ * function Shape() {
+ *   this.x = 0;
+ *   this.y = 0;
+ * }
+ *
+ * function Circle() {
+ *   Shape.call(this);
+ * }
+ *
+ * Circle.prototype = _.create(Shape.prototype, { 'constructor': Circle });
+ *
+ * var circle = new Circle;
+ * circle instanceof Circle;
+ * // => true
+ *
+ * circle instanceof Shape;
+ * // => true
+ */
+function create(prototype, properties, guard) {
+  var result = baseCreate(prototype);
+  if (guard && isIterateeCall(prototype, properties, guard)) {
+    properties = null;
+  }
+  return properties ? baseCopy(properties, result, keys(properties)) : result;
+}
+
+export default create;

object/defaults.js

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+import arrayCopy from '../internal/arrayCopy';
+import assign from './assign';
+import assignDefaults from '../internal/assignDefaults';
+
+/**
+ * Assigns own enumerable properties of source object(s) to the destination
+ * object for all destination properties that resolve to `undefined`. Once a
+ * property is set, additional defaults of the same property are ignored.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The destination object.
+ * @param {...Object} [sources] The source objects.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * _.defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' });
+ * // => { 'user': 'barney', 'age': 36 }
+ */
+function defaults(object) {
+  if (object == null) {
+    return object;
+  }
+  var args = arrayCopy(arguments);
+  args.push(assignDefaults);
+  return assign.apply(undefined, args);
+}
+
+export default defaults;

object/extend.js

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+import assign from './assign'
+export default assign;

object/findKey.js

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+import baseCallback from '../internal/baseCallback';
+import baseFind from '../internal/baseFind';
+import baseForOwn from '../internal/baseForOwn';
+
+/**
+ * This method is like `_.findIndex` except that it returns the key of the
+ * first element `predicate` returns truthy for, instead of the element itself.
+ *
+ * If a property name is provided for `predicate` the created "_.property"
+ * style callback returns the property value of the given element.
+ *
+ * If an object is provided for `predicate` the created "_.matches" style
+ * callback returns `true` for elements that have the properties of the given
+ * object, else `false`.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to search.
+ * @param {Function|Object|string} [predicate=_.identity] The function invoked
+ *  per iteration. If a property name or object is provided it is used to
+ *  create a "_.property" or "_.matches" style callback respectively.
+ * @param {*} [thisArg] The `this` binding of `predicate`.
+ * @returns {string|undefined} Returns the key of the matched element, else `undefined`.
+ * @example
+ *
+ * var users = {
+ *   'barney':  { 'age': 36, 'active': true },
+ *   'fred':    { 'age': 40, 'active': false },
+ *   'pebbles': { 'age': 1,  'active': true }
+ * };
+ *
+ * _.findKey(users, function(chr) { return chr.age < 40; });
+ * // => 'barney' (iteration order is not guaranteed)
+ *
+ * // using the "_.matches" callback shorthand
+ * _.findKey(users, { 'age': 1 });
+ * // => 'pebbles'
+ *
+ * // using the "_.property" callback shorthand
+ * _.findKey(users, 'active');
+ * // => 'barney'
+ */
+function findKey(object, predicate, thisArg) {
+  predicate = baseCallback(predicate, thisArg, 3);
+  return baseFind(object, predicate, baseForOwn, true);
+}
+
+export default findKey;

object/findLastKey.js

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+import baseCallback from '../internal/baseCallback';
+import baseFind from '../internal/baseFind';
+import baseForOwnRight from '../internal/baseForOwnRight';
+
+/**
+ * This method is like `_.findKey` except that it iterates over elements of
+ * a collection in the opposite order.
+ *
+ * If a property name is provided for `predicate` the created "_.property"
+ * style callback returns the property value of the given element.
+ *
+ * If an object is provided for `predicate` the created "_.matches" style
+ * callback returns `true` for elements that have the properties of the given
+ * object, else `false`.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to search.
+ * @param {Function|Object|string} [predicate=_.identity] The function invoked
+ *  per iteration. If a property name or object is provided it is used to
+ *  create a "_.property" or "_.matches" style callback respectively.
+ * @param {*} [thisArg] The `this` binding of `predicate`.
+ * @returns {string|undefined} Returns the key of the matched element, else `undefined`.
+ * @example
+ *
+ * var users = {
+ *   'barney':  { 'age': 36, 'active': true },
+ *   'fred':    { 'age': 40, 'active': false },
+ *   'pebbles': { 'age': 1,  'active': true }
+ * };
+ *
+ * _.findLastKey(users, function(chr) { return chr.age < 40; });
+ * // => returns `pebbles` assuming `_.findKey` returns `barney`
+ *
+ * // using the "_.matches" callback shorthand
+ * _.findLastKey(users, { 'age': 36 });
+ * // => 'barney'
+ *
+ * // using the "_.property" callback shorthand
+ * _.findLastKey(users, 'active');
+ * // => 'pebbles'
+ */
+function findLastKey(object, predicate, thisArg) {
+  predicate = baseCallback(predicate, thisArg, 3);
+  return baseFind(object, predicate, baseForOwnRight, true);
+}
+
+export default findLastKey;

object/forIn.js

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+import baseFor from '../internal/baseFor';
+import bindCallback from '../internal/bindCallback';
+import keysIn from './keysIn';
+
+/**
+ * Iterates over own and inherited enumerable properties of an object invoking
+ * `iteratee` for each property. The `iteratee` is bound to `thisArg` and invoked
+ * with three arguments; (value, key, object). Iterator functions may exit
+ * iteration early by explicitly returning `false`.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to iterate over.
+ * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+ * @param {*} [thisArg] The `this` binding of `iteratee`.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * function Foo() {
+ *   this.a = 1;
+ *   this.b = 2;
+ * }
+ *
+ * Foo.prototype.c = 3;
+ *
+ * _.forIn(new Foo, function(value, key) {
+ *   console.log(key);
+ * });
+ * // => logs 'a', 'b', and 'c' (iteration order is not guaranteed)
+ */
+function forIn(object, iteratee, thisArg) {
+  if (typeof iteratee != 'function' || typeof thisArg != 'undefined') {
+    iteratee = bindCallback(iteratee, thisArg, 3);
+  }
+  return baseFor(object, iteratee, keysIn);
+}
+
+export default forIn;

object/forInRight.js

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+import baseForRight from '../internal/baseForRight';
+import bindCallback from '../internal/bindCallback';
+import keysIn from './keysIn';
+
+/**
+ * This method is like `_.forIn` except that it iterates over properties of
+ * `object` in the opposite order.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to iterate over.
+ * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+ * @param {*} [thisArg] The `this` binding of `iteratee`.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * function Foo() {
+ *   this.a = 1;
+ *   this.b = 2;
+ * }
+ *
+ * Foo.prototype.c = 3;
+ *
+ * _.forInRight(new Foo, function(value, key) {
+ *   console.log(key);
+ * });
+ * // => logs 'c', 'b', and 'a' assuming `_.forIn ` logs 'a', 'b', and 'c'
+ */
+function forInRight(object, iteratee, thisArg) {
+  iteratee = bindCallback(iteratee, thisArg, 3);
+  return baseForRight(object, iteratee, keysIn);
+}
+
+export default forInRight;

object/forOwn.js

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+import baseForOwn from '../internal/baseForOwn';
+import bindCallback from '../internal/bindCallback';
+
+/**
+ * Iterates over own enumerable properties of an object invoking `iteratee`
+ * for each property. The `iteratee` is bound to `thisArg` and invoked with
+ * three arguments; (value, key, object). Iterator functions may exit iteration
+ * early by explicitly returning `false`.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to iterate over.
+ * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+ * @param {*} [thisArg] The `this` binding of `iteratee`.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * _.forOwn({ '0': 'zero', '1': 'one', 'length': 2 }, function(n, key) {
+ *   console.log(key);
+ * });
+ * // => logs '0', '1', and 'length' (iteration order is not guaranteed)
+ */
+function forOwn(object, iteratee, thisArg) {
+  if (typeof iteratee != 'function' || typeof thisArg != 'undefined') {
+    iteratee = bindCallback(iteratee, thisArg, 3);
+  }
+  return baseForOwn(object, iteratee);
+}
+
+export default forOwn;

object/forOwnRight.js

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+import baseForRight from '../internal/baseForRight';
+import bindCallback from '../internal/bindCallback';
+import keys from './keys';
+
+/**
+ * This method is like `_.forOwn` except that it iterates over properties of
+ * `object` in the opposite order.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to iterate over.
+ * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+ * @param {*} [thisArg] The `this` binding of `iteratee`.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * _.forOwnRight({ '0': 'zero', '1': 'one', 'length': 2 }, function(n, key) {
+ *   console.log(key);
+ * });
+ * // => logs 'length', '1', and '0' assuming `_.forOwn` logs '0', '1', and 'length'
+ */
+function forOwnRight(object, iteratee, thisArg) {
+  iteratee = bindCallback(iteratee, thisArg, 3);
+  return baseForRight(object, iteratee, keys);
+}
+
+export default forOwnRight;

object/functions.js

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+import baseFunctions from '../internal/baseFunctions';
+import keysIn from './keysIn';
+
+/**
+ * Creates an array of function property names from all enumerable properties,
+ * own and inherited, of `object`.
+ *
+ * @static
+ * @memberOf _
+ * @alias methods
+ * @category Object
+ * @param {Object} object The object to inspect.
+ * @returns {Array} Returns the new array of property names.
+ * @example
+ *
+ * _.functions(_);
+ * // => ['all', 'any', 'bind', ...]
+ */
+function functions(object) {
+  return baseFunctions(object, keysIn(object));
+}
+
+export default functions;

object/has.js

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+/** Used for native method references. */
+var objectProto = Object.prototype;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
+/**
+ * Checks if `key` exists as a direct property of `object` instead of an
+ * inherited property.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to inspect.
+ * @param {string} key The key to check.
+ * @returns {boolean} Returns `true` if `key` is a direct property, else `false`.
+ * @example
+ *
+ * _.has({ 'a': 1, 'b': 2, 'c': 3 }, 'b');
+ * // => true
+ */
+function has(object, key) {
+  return object ? hasOwnProperty.call(object, key) : false;
+}
+
+export default has;

object/invert.js

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+import isIterateeCall from '../internal/isIterateeCall';
+import keys from './keys';
+
+/** Used for native method references. */
+var objectProto = Object.prototype;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
+/**
+ * Creates an object composed of the inverted keys and values of `object`.
+ * If `object` contains duplicate values, subsequent values overwrite property
+ * assignments of previous values unless `multiValue` is `true`.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to invert.
+ * @param {boolean} [multiValue] Allow multiple values per key.
+ * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
+ * @returns {Object} Returns the new inverted object.
+ * @example
+ *
+ * _.invert({ 'first': 'fred', 'second': 'barney' });
+ * // => { 'fred': 'first', 'barney': 'second' }
+ *
+ * // without `multiValue`
+ * _.invert({ 'first': 'fred', 'second': 'barney', 'third': 'fred' });
+ * // => { 'fred': 'third', 'barney': 'second' }
+ *
+ * // with `multiValue`
+ * _.invert({ 'first': 'fred', 'second': 'barney', 'third': 'fred' }, true);
+ * // => { 'fred': ['first', 'third'], 'barney': ['second'] }
+ */
+function invert(object, multiValue, guard) {
+  if (guard && isIterateeCall(object, multiValue, guard)) {
+    multiValue = null;
+  }
+  var index = -1,
+      props = keys(object),
+      length = props.length,
+      result = {};
+
+  while (++index < length) {
+    var key = props[index],
+        value = object[key];
+
+    if (multiValue) {
+      if (hasOwnProperty.call(result, value)) {
+        result[value].push(key);
+      } else {
+        result[value] = [key];
+      }
+    }
+    else {
+      result[value] = key;
+    }
+  }
+  return result;
+}
+
+export default invert;

object/keys.js

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+import isLength from '../internal/isLength';
+import isNative from '../lang/isNative';
+import isObject from '../lang/isObject';
+import shimKeys from '../internal/shimKeys';
+
+/* Native method references for those with the same name as other `lodash` methods. */
+var nativeKeys = isNative(nativeKeys = Object.keys) && nativeKeys;
+
+/**
+ * Creates an array of the own enumerable property names of `object`.
+ *
+ * **Note:** Non-object values are coerced to objects. See the
+ * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.keys)
+ * for more details.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to inspect.
+ * @returns {Array} Returns the array of property names.
+ * @example
+ *
+ * function Foo() {
+ *   this.a = 1;
+ *   this.b = 2;
+ * }
+ *
+ * Foo.prototype.c = 3;
+ *
+ * _.keys(new Foo);
+ * // => ['a', 'b'] (iteration order is not guaranteed)
+ *
+ * _.keys('hi');
+ * // => ['0', '1']
+ */
+var keys = !nativeKeys ? shimKeys : function(object) {
+  if (object) {
+    var Ctor = object.constructor,
+        length = object.length;
+  }
+  if ((typeof Ctor == 'function' && Ctor.prototype === object) ||
+     (typeof object != 'function' && (length && isLength(length)))) {
+    return shimKeys(object);
+  }
+  return isObject(object) ? nativeKeys(object) : [];
+};
+
+export default keys;

object/keysIn.js

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+import isArguments from '../lang/isArguments';
+import isArray from '../lang/isArray';
+import isIndex from '../internal/isIndex';
+import isLength from '../internal/isLength';
+import isObject from '../lang/isObject';
+import support from '../support';
+
+/** Used for native method references. */
+var objectProto = Object.prototype;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
+/**
+ * Creates an array of the own and inherited enumerable property names of `object`.
+ *
+ * **Note:** Non-object values are coerced to objects.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to inspect.
+ * @returns {Array} Returns the array of property names.
+ * @example
+ *
+ * function Foo() {
+ *   this.a = 1;
+ *   this.b = 2;
+ * }
+ *
+ * Foo.prototype.c = 3;
+ *
+ * _.keysIn(new Foo);
+ * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
+ */
+function keysIn(object) {
+  if (object == null) {
+    return [];
+  }
+  if (!isObject(object)) {
+    object = Object(object);
+  }
+  var length = object.length;
+  length = (length && isLength(length) &&
+    (isArray(object) || (support.nonEnumArgs && isArguments(object))) && length) || 0;
+
+  var Ctor = object.constructor,
+      index = -1,
+      isProto = typeof Ctor == 'function' && Ctor.prototype == object,
+      result = Array(length),
+      skipIndexes = length > 0;
+
+  while (++index < length) {
+    result[index] = (index + '');
+  }
+  for (var key in object) {
+    if (!(skipIndexes && isIndex(key, length)) &&
+        !(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
+      result.push(key);
+    }
+  }
+  return result;
+}
+
+export default keysIn;

object/mapValues.js

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+import baseCallback from '../internal/baseCallback';
+import baseForOwn from '../internal/baseForOwn';
+
+/**
+ * Creates an object with the same keys as `object` and values generated by
+ * running each own enumerable property of `object` through `iteratee`. The
+ * iteratee function is bound to `thisArg` and invoked with three arguments;
+ * (value, key, object).
+ *
+ * If a property name is provided for `iteratee` the created "_.property"
+ * style callback returns the property value of the given element.
+ *
+ * If an object is provided for `iteratee` the created "_.matches" style
+ * callback returns `true` for elements that have the properties of the given
+ * object, else `false`.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to iterate over.
+ * @param {Function|Object|string} [iteratee=_.identity] The function invoked
+ *  per iteration. If a property name or object is provided it is used to
+ *  create a "_.property" or "_.matches" style callback respectively.
+ * @param {*} [thisArg] The `this` binding of `iteratee`.
+ * @returns {Object} Returns the new mapped object.
+ * @example
+ *
+ * _.mapValues({ 'a': 1, 'b': 2, 'c': 3} , function(n) { return n * 3; });
+ * // => { 'a': 3, 'b': 6, 'c': 9 }
+ *
+ * var users = {
+ *   'fred':    { 'user': 'fred',    'age': 40 },
+ *   'pebbles': { 'user': 'pebbles', 'age': 1 }
+ * };
+ *
+ * // using the "_.property" callback shorthand
+ * _.mapValues(users, 'age');
+ * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
+ */
+function mapValues(object, iteratee, thisArg) {
+  var result = {};
+  iteratee = baseCallback(iteratee, thisArg, 3);
+
+  baseForOwn(object, function(value, key, object) {
+    result[key] = iteratee(value, key, object);
+  });
+  return result;
+}
+
+export default mapValues;

object/merge.js

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+import baseMerge from '../internal/baseMerge';
+import createAssigner from '../internal/createAssigner';
+
+/**
+ * Recursively merges own enumerable properties of the source object(s), that
+ * don't resolve to `undefined` into the destination object. Subsequent sources
+ * overwrite property assignments of previous sources. If `customizer` is
+ * provided it is invoked to produce the merged values of the destination and
+ * source properties. If `customizer` returns `undefined` merging is handled
+ * by the method instead. The `customizer` is bound to `thisArg` and invoked
+ * with five arguments; (objectValue, sourceValue, key, object, source).
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The destination object.
+ * @param {...Object} [sources] The source objects.
+ * @param {Function} [customizer] The function to customize merging properties.
+ * @param {*} [thisArg] The `this` binding of `customizer`.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * var users = {
+ *   'data': [{ 'user': 'barney' }, { 'user': 'fred' }]
+ * };
+ *
+ * var ages = {
+ *   'data': [{ 'age': 36 }, { 'age': 40 }]
+ * };
+ *
+ * _.merge(users, ages);
+ * // => { 'data': [{ 'user': 'barney', 'age': 36 }, { 'user': 'fred', 'age': 40 }] }
+ *
+ * // using a customizer callback
+ * var object = {
+ *   'fruits': ['apple'],
+ *   'vegetables': ['beet']
+ * };
+ *
+ * var other = {
+ *   'fruits': ['banana'],
+ *   'vegetables': ['carrot']
+ * };
+ *
+ * _.merge(object, other, function(a, b) {
+ *   return _.isArray(a) ? a.concat(b) : undefined;
+ * });
+ * // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot'] }
+ */
+var merge = createAssigner(baseMerge);
+
+export default merge;

object/methods.js

@@ -0,0 +1,2 @@
+import functions from './functions'
+export default functions;

object/omit.js

@@ -0,0 +1,51 @@
+import arrayMap from '../internal/arrayMap';
+import baseDifference from '../internal/baseDifference';
+import baseFlatten from '../internal/baseFlatten';
+import bindCallback from '../internal/bindCallback';
+import keysIn from './keysIn';
+import pickByArray from '../internal/pickByArray';
+import pickByCallback from '../internal/pickByCallback';
+
+/**
+ * The opposite of `_.pick`; this method creates an object composed of the
+ * own and inherited enumerable properties of `object` that are not omitted.
+ * Property names may be specified as individual arguments or as arrays of
+ * property names. If `predicate` is provided it is invoked for each property
+ * of `object` omitting the properties `predicate` returns truthy for. The
+ * predicate is bound to `thisArg` and invoked with three arguments;
+ * (value, key, object).
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The source object.
+ * @param {Function|...(string|string[])} [predicate] The function invoked per
+ *  iteration or property names to omit, specified as individual property
+ *  names or arrays of property names.
+ * @param {*} [thisArg] The `this` binding of `predicate`.
+ * @returns {Object} Returns the new object.
+ * @example
+ *
+ * var object = { 'user': 'fred', 'age': 40 };
+ *
+ * _.omit(object, 'age');
+ * // => { 'user': 'fred' }
+ *
+ * _.omit(object, _.isNumber);
+ * // => { 'user': 'fred' }
+ */
+function omit(object, predicate, thisArg) {
+  if (object == null) {
+    return {};
+  }
+  if (typeof predicate != 'function') {
+    var props = arrayMap(baseFlatten(arguments, false, false, 1), String);
+    return pickByArray(object, baseDifference(keysIn(object), props));
+  }
+  predicate = bindCallback(predicate, thisArg, 3);
+  return pickByCallback(object, function(value, key, object) {
+    return !predicate(value, key, object);
+  });
+}
+
+export default omit;

object/pairs.js

@@ -0,0 +1,30 @@
+import keys from './keys';
+
+/**
+ * Creates a two dimensional array of the key-value pairs for `object`,
+ * e.g. `[[key1, value1], [key2, value2]]`.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to inspect.
+ * @returns {Array} Returns the new array of key-value pairs.
+ * @example
+ *
+ * _.pairs({ 'barney': 36, 'fred': 40 });
+ * // => [['barney', 36], ['fred', 40]] (iteration order is not guaranteed)
+ */
+function pairs(object) {
+  var index = -1,
+      props = keys(object),
+      length = props.length,
+      result = Array(length);
+
+  while (++index < length) {
+    var key = props[index];
+    result[index] = [key, object[key]];
+  }
+  return result;
+}
+
+export default pairs;

object/pick.js

@@ -0,0 +1,41 @@
+import baseFlatten from '../internal/baseFlatten';
+import bindCallback from '../internal/bindCallback';
+import pickByArray from '../internal/pickByArray';
+import pickByCallback from '../internal/pickByCallback';
+
+/**
+ * Creates an object composed of the picked `object` properties. Property
+ * names may be specified as individual arguments or as arrays of property
+ * names. If `predicate` is provided it is invoked for each property of `object`
+ * picking the properties `predicate` returns truthy for. The predicate is
+ * bound to `thisArg` and invoked with three arguments; (value, key, object).
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The source object.
+ * @param {Function|...(string|string[])} [predicate] The function invoked per
+ *  iteration or property names to pick, specified as individual property
+ *  names or arrays of property names.
+ * @param {*} [thisArg] The `this` binding of `predicate`.
+ * @returns {Object} Returns the new object.
+ * @example
+ *
+ * var object = { 'user': 'fred', 'age': 40 };
+ *
+ * _.pick(object, 'user');
+ * // => { 'user': 'fred' }
+ *
+ * _.pick(object, _.isString);
+ * // => { 'user': 'fred' }
+ */
+function pick(object, predicate, thisArg) {
+  if (object == null) {
+    return {};
+  }
+  return typeof predicate == 'function'
+    ? pickByCallback(object, bindCallback(predicate, thisArg, 3))
+    : pickByArray(object, baseFlatten(arguments, false, false, 1));
+}
+
+export default pick;

object/result.js

@@ -0,0 +1,41 @@
+import isFunction from '../lang/isFunction';
+
+/**
+ * Resolves the value of property `key` on `object`. If the value of `key` is
+ * a function it is invoked with the `this` binding of `object` and its result
+ * is returned, else the property value is returned. If the property value is
+ * `undefined` the `defaultValue` is used in its place.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to query.
+ * @param {string} key The key of the property to resolve.
+ * @param {*} [defaultValue] The value returned if the property value
+ *  resolves to `undefined`.
+ * @returns {*} Returns the resolved value.
+ * @example
+ *
+ * var object = { 'user': 'fred', 'age': _.constant(40) };
+ *
+ * _.result(object, 'user');
+ * // => 'fred'
+ *
+ * _.result(object, 'age');
+ * // => 40
+ *
+ * _.result(object, 'status', 'busy');
+ * // => 'busy'
+ *
+ * _.result(object, 'status', _.constant('busy'));
+ * // => 'busy'
+ */
+function result(object, key, defaultValue) {
+  var value = object == null ? undefined : object[key];
+  if (typeof value == 'undefined') {
+    value = defaultValue;
+  }
+  return isFunction(value) ? value.call(object) : value;
+}
+
+export default result;

object/transform.js

@@ -0,0 +1,62 @@
+import arrayEach from '../internal/arrayEach';
+import baseCallback from '../internal/baseCallback';
+import baseCreate from '../internal/baseCreate';
+import baseForOwn from '../internal/baseForOwn';
+import isArray from '../lang/isArray';
+import isObject from '../lang/isObject';
+import isTypedArray from '../lang/isTypedArray';
+
+/**
+ * An alternative to `_.reduce`; this method transforms `object` to a new
+ * `accumulator` object which is the result of running each of its own enumerable
+ * properties through `iteratee`, with each invocation potentially mutating
+ * the `accumulator` object. The `iteratee` is bound to `thisArg` and invoked
+ * with four arguments; (accumulator, value, key, object). Iterator functions
+ * may exit iteration early by explicitly returning `false`.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Array|Object} object The object to iterate over.
+ * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+ * @param {*} [accumulator] The custom accumulator value.
+ * @param {*} [thisArg] The `this` binding of `iteratee`.
+ * @returns {*} Returns the accumulated value.
+ * @example
+ *
+ * var squares = _.transform([1, 2, 3, 4, 5, 6], function(result, n) {
+ *   n *= n;
+ *   if (n % 2) {
+ *     return result.push(n) < 3;
+ *   }
+ * });
+ * // => [1, 9, 25]
+ *
+ * var mapped = _.transform({ 'a': 1, 'b': 2, 'c': 3 }, function(result, n, key) {
+ *   result[key] = n * 3;
+ * });
+ * // => { 'a': 3, 'b': 6, 'c': 9 }
+ */
+function transform(object, iteratee, accumulator, thisArg) {
+  var isArr = isArray(object) || isTypedArray(object);
+  iteratee = baseCallback(iteratee, thisArg, 4);
+
+  if (accumulator == null) {
+    if (isArr || isObject(object)) {
+      var Ctor = object.constructor;
+      if (isArr) {
+        accumulator = isArray(object) ? new Ctor : [];
+      } else {
+        accumulator = baseCreate(typeof Ctor == 'function' && Ctor.prototype);
+      }
+    } else {
+      accumulator = {};
+    }
+  }
+  (isArr ? arrayEach : baseForOwn)(object, function(value, index, object) {
+    return iteratee(accumulator, value, index, object);
+  });
+  return accumulator;
+}
+
+export default transform;

object/values.js

@@ -0,0 +1,33 @@
+import baseValues from '../internal/baseValues';
+import keys from './keys';
+
+/**
+ * Creates an array of the own enumerable property values of `object`.
+ *
+ * **Note:** Non-object values are coerced to objects.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to query.
+ * @returns {Array} Returns the array of property values.
+ * @example
+ *
+ * function Foo() {
+ *   this.a = 1;
+ *   this.b = 2;
+ * }
+ *
+ * Foo.prototype.c = 3;
+ *
+ * _.values(new Foo);
+ * // => [1, 2] (iteration order is not guaranteed)
+ *
+ * _.values('hi');
+ * // => ['h', 'i']
+ */
+function values(object) {
+  return baseValues(object, keys(object));
+}
+
+export default values;

object/valuesIn.js

@@ -0,0 +1,31 @@
+import baseValues from '../internal/baseValues';
+import keysIn from './keysIn';
+
+/**
+ * Creates an array of the own and inherited enumerable property values
+ * of `object`.
+ *
+ * **Note:** Non-object values are coerced to objects.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to query.
+ * @returns {Array} Returns the array of property values.
+ * @example
+ *
+ * function Foo() {
+ *   this.a = 1;
+ *   this.b = 2;
+ * }
+ *
+ * Foo.prototype.c = 3;
+ *
+ * _.valuesIn(new Foo);
+ * // => [1, 2, 3] (iteration order is not guaranteed)
+ */
+function valuesIn(object) {
+  return baseValues(object, keysIn(object));
+}
+
+export default valuesIn;