lodash.clone - npm Package Compare versions

Comparing version 3.0.3 to 4.0.0

index.js

 /**
- * lodash 3.0.3 (Custom Build) <https://lodash.com/>
- * Build: `lodash modern modularize exports="npm" -o ./`
- * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
+ * lodash 4.0.0 (Custom Build) <https://lodash.com/>
+ * Build: `lodash modularize exports="npm" -o ./`
+ * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
- * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+ * Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  * Available under MIT license <https://lodash.com/license>
  */
-var baseClone = require('lodash._baseclone'),
-    bindCallback = require('lodash._bindcallback'),
-    isIterateeCall = require('lodash._isiterateecall');
+var Stack = require('lodash._stack'),
+    arrayEach = require('lodash._arrayeach'),
+    baseFor = require('lodash._basefor'),
+    keys = require('lodash.keys');
 
+/** `Object#toString` result references. */
+var argsTag = '[object Arguments]',
+    arrayTag = '[object Array]',
+    boolTag = '[object Boolean]',
+    dateTag = '[object Date]',
+    errorTag = '[object Error]',
+    funcTag = '[object Function]',
+    genTag = '[object GeneratorFunction]',
+    mapTag = '[object Map]',
+    numberTag = '[object Number]',
+    objectTag = '[object Object]',
+    regexpTag = '[object RegExp]',
+    setTag = '[object Set]',
+    stringTag = '[object String]',
+    symbolTag = '[object Symbol]',
+    weakMapTag = '[object WeakMap]';
+
+var arrayBufferTag = '[object ArrayBuffer]',
+    float32Tag = '[object Float32Array]',
+    float64Tag = '[object Float64Array]',
+    int8Tag = '[object Int8Array]',
+    int16Tag = '[object Int16Array]',
+    int32Tag = '[object Int32Array]',
+    uint8Tag = '[object Uint8Array]',
+    uint8ClampedTag = '[object Uint8ClampedArray]',
+    uint16Tag = '[object Uint16Array]',
+    uint32Tag = '[object Uint32Array]';
+
+/** Used to match `RegExp` [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns). */
+var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
+
+/** Used to match `RegExp` flags from their coerced string values. */
+var reFlags = /\w*$/;
+
+/** Used to detect host constructors (Safari > 5). */
+var reIsHostCtor = /^\[object .+?Constructor\]$/;
+
+/** Used to identify `toStringTag` values supported by `_.clone`. */
+var cloneableTags = {};
+cloneableTags[argsTag] = cloneableTags[arrayTag] =
+cloneableTags[arrayBufferTag] = cloneableTags[boolTag] =
+cloneableTags[dateTag] = cloneableTags[float32Tag] =
+cloneableTags[float64Tag] = cloneableTags[int8Tag] =
+cloneableTags[int16Tag] = cloneableTags[int32Tag] =
+cloneableTags[mapTag] = cloneableTags[numberTag] =
+cloneableTags[objectTag] = cloneableTags[regexpTag] =
+cloneableTags[setTag] = cloneableTags[stringTag] =
+cloneableTags[symbolTag] = cloneableTags[uint8Tag] =
+cloneableTags[uint8ClampedTag] = cloneableTags[uint16Tag] =
+cloneableTags[uint32Tag] = true;
+cloneableTags[errorTag] = cloneableTags[funcTag] =
+cloneableTags[weakMapTag] = false;
+
 /**
- * Creates a clone of `value`. If `isDeep` is `true` nested objects are cloned,
- * otherwise they are assigned by reference. If `customizer` is provided it's
- * invoked to produce the cloned values. If `customizer` returns `undefined`
- * cloning is handled by the method instead. The `customizer` is bound to
- * `thisArg` and invoked with up to three argument; (value [, index|key, object]).
+ * Adds the key-value `pair` to `map`.
  *
+ * @private
+ * @param {Object} map The map to modify.
+ * @param {Array} pair The key-value pair to add.
+ * @returns {Object} Returns `map`.
+ */
+function addMapEntry(map, pair) {
+  map.set(pair[0], pair[1]);
+  return map;
+}
+
+/**
+ * Adds `value` to `set`.
+ *
+ * @private
+ * @param {Object} set The set to modify.
+ * @param {*} value The value to add.
+ * @returns {Object} Returns `set`.
+ */
+function addSetEntry(set, value) {
+  set.add(value);
+  return set;
+}
+
+/**
+ * A specialized version of `_.reduce` for arrays without support for
+ * iteratee shorthands.
+ *
+ * @private
+ * @param {Array} array The array to iterate over.
+ * @param {Function} iteratee The function invoked per iteration.
+ * @param {*} [accumulator] The initial value.
+ * @param {boolean} [initFromArray] Specify using the first element of `array` as the initial value.
+ * @returns {*} Returns the accumulated value.
+ */
+function arrayReduce(array, iteratee, accumulator, initFromArray) {
+  var index = -1,
+      length = array.length;
+
+  if (initFromArray && length) {
+    accumulator = array[++index];
+  }
+  while (++index < length) {
+    accumulator = iteratee(accumulator, array[index], index, array);
+  }
+  return accumulator;
+}
+
+/**
+ * Checks if `value` is a host object in IE < 9.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a host object, else `false`.
+ */
+function isHostObject(value) {
+  // Many host objects are `Object` objects that can coerce to strings
+  // despite having improperly defined `toString` methods.
+  var result = false;
+  if (value != null && typeof value.toString != 'function') {
+    try {
+      result = !!(value + '');
+    } catch (e) {}
+  }
+  return result;
+}
+
+/**
+ * Converts `map` to an array.
+ *
+ * @private
+ * @param {Object} map The map to convert.
+ * @returns {Array} Returns the converted array.
+ */
+function mapToArray(map) {
+  var index = -1,
+      result = Array(map.size);
+
+  map.forEach(function(value, key) {
+    result[++index] = [key, value];
+  });
+  return result;
+}
+
+/**
+ * Converts `set` to an array.
+ *
+ * @private
+ * @param {Object} set The set to convert.
+ * @returns {Array} Returns the converted array.
+ */
+function setToArray(set) {
+  var index = -1,
+      result = Array(set.size);
+
+  set.forEach(function(value) {
+    result[++index] = value;
+  });
+  return result;
+}
+
+/** Used for built-in method references. */
+var objectProto = global.Object.prototype;
+
+/** Used to resolve the decompiled source of functions. */
+var funcToString = global.Function.prototype.toString;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
+/**
+ * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+ * of values.
+ */
+var objectToString = objectProto.toString;
+
+/** Used to detect if a method is native. */
+var reIsNative = RegExp('^' +
+  funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
+  .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
+);
+
+/** Built-in value references. */
+var _Symbol = global.Symbol,
+    Uint8Array = global.Uint8Array,
+    getOwnPropertySymbols = Object.getOwnPropertySymbols;
+
+/* Built-in method references that are verified to be native. */
+var Map = getNative(global, 'Map'),
+    Set = getNative(global, 'Set');
+
+/** Used to detect maps and sets. */
+var mapCtorString = Map ? funcToString.call(Map) : '',
+    setCtorString = Set ? funcToString.call(Set) : '';
+
+/** Used to convert symbols to primitives and strings. */
+var symbolProto = _Symbol ? _Symbol.prototype : undefined,
+    symbolValueOf = _Symbol ? symbolProto.valueOf : undefined;
+
+/**
+ * Assigns `value` to `key` of `object` if the existing value is not equivalent
+ * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+ * for equality comparisons.
+ *
+ * @private
+ * @param {Object} object The object to modify.
+ * @param {string} key The key of the property to assign.
+ * @param {*} value The value to assign.
+ */
+function assignValue(object, key, value) {
+  var objValue = object[key];
+  if ((!eq(objValue, value) ||
+        (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) ||
+      (value === undefined && !(key in object))) {
+    object[key] = value;
+  }
+}
+
+/**
+ * The base implementation of `_.assign` without support for multiple sources
+ * or `customizer` functions.
+ *
+ * @private
+ * @param {Object} object The destination object.
+ * @param {Object} source The source object.
+ * @returns {Object} Returns `object`.
+ */
+function baseAssign(object, source) {
+  return object && copyObject(source, keys(source), object);
+}
+
+/**
+ * The base implementation of `_.clone` and `_.cloneDeep` which tracks
+ * traversed objects.
+ *
+ * @private
+ * @param {*} value The value to clone.
+ * @param {boolean} [isDeep] Specify a deep clone.
+ * @param {Function} [customizer] The function to customize cloning.
+ * @param {string} [key] The key of `value`.
+ * @param {Object} [object] The parent object of `value`.
+ * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
+ * @returns {*} Returns the cloned value.
+ */
+function baseClone(value, isDeep, customizer, key, object, stack) {
+  var result;
+  if (customizer) {
+    result = object ? customizer(value, key, object, stack) : customizer(value);
+  }
+  if (result !== undefined) {
+    return result;
+  }
+  if (!isObject(value)) {
+    return value;
+  }
+  var isArr = isArray(value);
+  if (isArr) {
+    result = initCloneArray(value);
+    if (!isDeep) {
+      return copyArray(value, result);
+    }
+  } else {
+    var tag = getTag(value),
+        isFunc = tag == funcTag || tag == genTag;
+
+    if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
+      if (isHostObject(value)) {
+        return object ? value : {};
+      }
+      result = initCloneObject(isFunc ? {} : value);
+      if (!isDeep) {
+        return copySymbols(value, baseAssign(result, value));
+      }
+    } else {
+      return cloneableTags[tag]
+        ? initCloneByTag(value, tag, isDeep)
+        : (object ? value : {});
+    }
+  }
+  // Check for circular references and return its corresponding clone.
+  stack || (stack = new Stack);
+  var stacked = stack.get(value);
+  if (stacked) {
+    return stacked;
+  }
+  stack.set(value, result);
+
+  // Recursively populate clone (susceptible to call stack limits).
+  (isArr ? arrayEach : baseForOwn)(value, function(subValue, key) {
+    assignValue(result, key, baseClone(subValue, isDeep, customizer, key, value, stack));
+  });
+  return isArr ? result : copySymbols(value, result);
+}
+
+/**
+ * The base implementation of `_.create` without support for assigning
+ * properties to the created object.
+ *
+ * @private
+ * @param {Object} prototype The object to inherit from.
+ * @returns {Object} Returns the new object.
+ */
+var baseCreate = (function() {
+  function object() {}
+  return function(prototype) {
+    if (isObject(prototype)) {
+      object.prototype = prototype;
+      var result = new object;
+      object.prototype = undefined;
+    }
+    return result || {};
+  };
+}());
+
+/**
+ * The base implementation of `_.forOwn` without support for iteratee shorthands.
+ *
+ * @private
+ * @param {Object} object The object to iterate over.
+ * @param {Function} iteratee The function invoked per iteration.
+ * @returns {Object} Returns `object`.
+ */
+function baseForOwn(object, iteratee) {
+  return object && baseFor(object, iteratee, keys);
+}
+
+/**
+ * Creates a clone of `buffer`.
+ *
+ * @private
+ * @param {ArrayBuffer} buffer The array buffer to clone.
+ * @returns {ArrayBuffer} Returns the cloned array buffer.
+ */
+function cloneBuffer(buffer) {
+  var Ctor = buffer.constructor,
+      result = new Ctor(buffer.byteLength),
+      view = new Uint8Array(result);
+
+  view.set(new Uint8Array(buffer));
+  return result;
+}
+
+/**
+ * Creates a clone of `map`.
+ *
+ * @private
+ * @param {Object} map The map to clone.
+ * @returns {Object} Returns the cloned map.
+ */
+function cloneMap(map) {
+  var Ctor = map.constructor;
+  return arrayReduce(mapToArray(map), addMapEntry, new Ctor);
+}
+
+/**
+ * Creates a clone of `regexp`.
+ *
+ * @private
+ * @param {Object} regexp The regexp to clone.
+ * @returns {Object} Returns the cloned regexp.
+ */
+function cloneRegExp(regexp) {
+  var Ctor = regexp.constructor,
+      result = new Ctor(regexp.source, reFlags.exec(regexp));
+
+  result.lastIndex = regexp.lastIndex;
+  return result;
+}
+
+/**
+ * Creates a clone of `set`.
+ *
+ * @private
+ * @param {Object} set The set to clone.
+ * @returns {Object} Returns the cloned set.
+ */
+function cloneSet(set) {
+  var Ctor = set.constructor;
+  return arrayReduce(setToArray(set), addSetEntry, new Ctor);
+}
+
+/**
+ * Creates a clone of the `symbol` object.
+ *
+ * @private
+ * @param {Object} symbol The symbol object to clone.
+ * @returns {Object} Returns the cloned symbol object.
+ */
+function cloneSymbol(symbol) {
+  return _Symbol ? Object(symbolValueOf.call(symbol)) : {};
+}
+
+/**
+ * Creates a clone of `typedArray`.
+ *
+ * @private
+ * @param {Object} typedArray The typed array to clone.
+ * @param {boolean} [isDeep] Specify a deep clone.
+ * @returns {Object} Returns the cloned typed array.
+ */
+function cloneTypedArray(typedArray, isDeep) {
+  var buffer = typedArray.buffer,
+      Ctor = typedArray.constructor;
+
+  return new Ctor(isDeep ? cloneBuffer(buffer) : buffer, typedArray.byteOffset, typedArray.length);
+}
+
+/**
+ * Copies the values of `source` to `array`.
+ *
+ * @private
+ * @param {Array} source The array to copy values from.
+ * @param {Array} [array=[]] The array to copy values to.
+ * @returns {Array} Returns `array`.
+ */
+function copyArray(source, array) {
+  var index = -1,
+      length = source.length;
+
+  array || (array = Array(length));
+  while (++index < length) {
+    array[index] = source[index];
+  }
+  return array;
+}
+
+/**
+ * Copies properties of `source` to `object`.
+ *
+ * @private
+ * @param {Object} source The object to copy properties from.
+ * @param {Array} props The property names to copy.
+ * @param {Object} [object={}] The object to copy properties to.
+ * @returns {Object} Returns `object`.
+ */
+function copyObject(source, props, object) {
+  return copyObjectWith(source, props, object);
+}
+
+/**
+ * This function is like `copyObject` except that it accepts a function to
+ * customize copied values.
+ *
+ * @private
+ * @param {Object} source The object to copy properties from.
+ * @param {Array} props The property names to copy.
+ * @param {Object} [object={}] The object to copy properties to.
+ * @param {Function} [customizer] The function to customize copied values.
+ * @returns {Object} Returns `object`.
+ */
+function copyObjectWith(source, props, object, customizer) {
+  object || (object = {});
+
+  var index = -1,
+      length = props.length;
+
+  while (++index < length) {
+    var key = props[index],
+        newValue = customizer ? customizer(object[key], source[key], key, object, source) : source[key];
+
+    assignValue(object, key, newValue);
+  }
+  return object;
+}
+
+/**
+ * Copies own symbol properties of `source` to `object`.
+ *
+ * @private
+ * @param {Object} source The object to copy symbols from.
+ * @param {Object} [object={}] The object to copy symbols to.
+ * @returns {Object} Returns `object`.
+ */
+function copySymbols(source, object) {
+  return copyObject(source, getSymbols(source), object);
+}
+
+/**
+ * Gets the native function at `key` of `object`.
+ *
+ * @private
+ * @param {Object} object The object to query.
+ * @param {string} key The key of the method to get.
+ * @returns {*} Returns the function if it's native, else `undefined`.
+ */
+function getNative(object, key) {
+  var value = object == null ? undefined : object[key];
+  return isNative(value) ? value : undefined;
+}
+
+/**
+ * Creates an array of the own symbol properties of `object`.
+ *
+ * @private
+ * @param {Object} object The object to query.
+ * @returns {Array} Returns the array of symbols.
+ */
+var getSymbols = getOwnPropertySymbols || function() {
+  return [];
+};
+
+/**
+ * Gets the `toStringTag` of `value`.
+ *
+ * @private
+ * @param {*} value The value to query.
+ * @returns {string} Returns the `toStringTag`.
+ */
+function getTag(value) {
+  return objectToString.call(value);
+}
+
+// Fallback for IE 11 providing `toStringTag` values for maps and sets.
+if ((Map && getTag(new Map) != mapTag) || (Set && getTag(new Set) != setTag)) {
+  getTag = function(value) {
+    var result = objectToString.call(value),
+        Ctor = result == objectTag ? value.constructor : null,
+        ctorString = typeof Ctor == 'function' ? funcToString.call(Ctor) : '';
+
+    if (ctorString) {
+      if (ctorString == mapCtorString) {
+        return mapTag;
+      }
+      if (ctorString == setCtorString) {
+        return setTag;
+      }
+    }
+    return result;
+  };
+}
+
+/**
+ * Initializes an array clone.
+ *
+ * @private
+ * @param {Array} array The array to clone.
+ * @returns {Array} Returns the initialized clone.
+ */
+function initCloneArray(array) {
+  var length = array.length,
+      result = array.constructor(length);
+
+  // Add properties assigned by `RegExp#exec`.
+  if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
+    result.index = array.index;
+    result.input = array.input;
+  }
+  return result;
+}
+
+/**
+ * Initializes an object clone.
+ *
+ * @private
+ * @param {Object} object The object to clone.
+ * @returns {Object} Returns the initialized clone.
+ */
+function initCloneObject(object) {
+  var Ctor = object.constructor;
+  return baseCreate(isFunction(Ctor) ? Ctor.prototype : undefined);
+}
+
+/**
+ * Initializes an object clone based on its `toStringTag`.
+ *
+ * **Note:** This function only supports cloning values with tags of
+ * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
+ *
+ * @private
+ * @param {Object} object The object to clone.
+ * @param {string} tag The `toStringTag` of the object to clone.
+ * @param {boolean} [isDeep] Specify a deep clone.
+ * @returns {Object} Returns the initialized clone.
+ */
+function initCloneByTag(object, tag, isDeep) {
+  var Ctor = object.constructor;
+  switch (tag) {
+    case arrayBufferTag:
+      return cloneBuffer(object);
+
+    case boolTag:
+    case dateTag:
+      return new Ctor(+object);
+
+    case float32Tag: case float64Tag:
+    case int8Tag: case int16Tag: case int32Tag:
+    case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
+      return cloneTypedArray(object, isDeep);
+
+    case mapTag:
+      return cloneMap(object);
+
+    case numberTag:
+    case stringTag:
+      return new Ctor(object);
+
+    case regexpTag:
+      return cloneRegExp(object);
+
+    case setTag:
+      return cloneSet(object);
+
+    case symbolTag:
+      return cloneSymbol(object);
+  }
+}
+
+/**
+ * Creates a shallow clone of `value`.
+ *
  * **Note:** This method is loosely based on the
- * [structured clone algorithm](http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm).
- * The enumerable properties of `arguments` objects and objects created by
- * constructors other than `Object` are cloned to plain `Object` objects. An
- * empty object is returned for uncloneable values such as functions, DOM nodes,
- * Maps, Sets, and WeakMaps.
+ * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
+ * and supports cloning arrays, array buffers, booleans, date objects, maps,
+ * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
+ * arrays. The own enumerable properties of `arguments` objects are cloned
+ * as plain objects. An empty object is returned for uncloneable values such
+ * as error objects, functions, DOM nodes, and WeakMaps.
  *
@@ -31,49 +631,182 @@ * @static
  * @param {*} value The value to clone.
- * @param {boolean} [isDeep] Specify a deep clone.
- * @param {Function} [customizer] The function to customize cloning values.
- * @param {*} [thisArg] The `this` binding of `customizer`.
  * @returns {*} Returns the cloned value.
  * @example
  *
- * var users = [
- *   { 'user': 'barney' },
- *   { 'user': 'fred' }
- * ];
+ * var objects = [{ 'a': 1 }, { 'b': 2 }];
  *
- * var shallow = _.clone(users);
- * shallow[0] === users[0];
+ * var shallow = _.clone(objects);
+ * console.log(shallow[0] === objects[0]);
  * // => true
+ */
+function clone(value) {
+  return baseClone(value);
+}
+
+/**
+ * Performs a [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+ * comparison between two values to determine if they are equivalent.
  *
- * var deep = _.clone(users, true);
- * deep[0] === users[0];
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to compare.
+ * @param {*} other The other value to compare.
+ * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
+ * @example
+ *
+ * var object = { 'user': 'fred' };
+ * var other = { 'user': 'fred' };
+ *
+ * _.eq(object, object);
+ * // => true
+ *
+ * _.eq(object, other);
  * // => false
  *
- * // using a customizer callback
- * var el = _.clone(document.body, function(value) {
- *   if (_.isElement(value)) {
- *     return value.cloneNode(false);
- *   }
- * });
+ * _.eq('a', 'a');
+ * // => true
  *
- * el === document.body
+ * _.eq('a', Object('a'));
  * // => false
- * el.nodeName
- * // => BODY
- * el.childNodes.length;
- * // => 0
+ *
+ * _.eq(NaN, NaN);
+ * // => true
  */
-function clone(value, isDeep, customizer, thisArg) {
-  if (isDeep && typeof isDeep != 'boolean' && isIterateeCall(value, isDeep, customizer)) {
-    isDeep = false;
+function eq(value, other) {
+  return value === other || (value !== value && other !== other);
+}
+
+/**
+ * Checks if `value` is classified as an `Array` object.
+ *
+ * @static
+ * @memberOf _
+ * @type Function
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
+ * @example
+ *
+ * _.isArray([1, 2, 3]);
+ * // => true
+ *
+ * _.isArray(document.body.children);
+ * // => false
+ *
+ * _.isArray('abc');
+ * // => false
+ *
+ * _.isArray(_.noop);
+ * // => false
+ */
+var isArray = Array.isArray;
+
+/**
+ * Checks if `value` is classified as a `Function` object.
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
+ * @example
+ *
+ * _.isFunction(_);
+ * // => true
+ *
+ * _.isFunction(/abc/);
+ * // => false
+ */
+function isFunction(value) {
+  // The use of `Object#toString` avoids issues with the `typeof` operator
+  // in Safari 8 which returns 'object' for typed array constructors, and
+  // PhantomJS 1.9 which returns 'function' for `NodeList` instances.
+  var tag = isObject(value) ? objectToString.call(value) : '';
+  return tag == funcTag || tag == genTag;
+}
+
+/**
+ * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
+ * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is an object, else `false`.
+ * @example
+ *
+ * _.isObject({});
+ * // => true
+ *
+ * _.isObject([1, 2, 3]);
+ * // => true
+ *
+ * _.isObject(_.noop);
+ * // => true
+ *
+ * _.isObject(null);
+ * // => false
+ */
+function isObject(value) {
+  // Avoid a V8 JIT bug in Chrome 19-20.
+  // See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
+  var type = typeof value;
+  return !!value && (type == 'object' || type == 'function');
+}
+
+/**
+ * Checks if `value` is object-like. A value is object-like if it's not `null`
+ * and has a `typeof` result of "object".
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
+ * @example
+ *
+ * _.isObjectLike({});
+ * // => true
+ *
+ * _.isObjectLike([1, 2, 3]);
+ * // => true
+ *
+ * _.isObjectLike(_.noop);
+ * // => false
+ *
+ * _.isObjectLike(null);
+ * // => false
+ */
+function isObjectLike(value) {
+  return !!value && typeof value == 'object';
+}
+
+/**
+ * Checks if `value` is a native function.
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a native function, else `false`.
+ * @example
+ *
+ * _.isNative(Array.prototype.push);
+ * // => true
+ *
+ * _.isNative(_);
+ * // => false
+ */
+function isNative(value) {
+  if (value == null) {
+    return false;
   }
-  else if (typeof isDeep == 'function') {
-    thisArg = customizer;
-    customizer = isDeep;
-    isDeep = false;
+  if (isFunction(value)) {
+    return reIsNative.test(funcToString.call(value));
   }
-  return typeof customizer == 'function'
-    ? baseClone(value, isDeep, bindCallback(customizer, thisArg, 3))
-    : baseClone(value, isDeep);
+  return isObjectLike(value) &&
+    (isHostObject(value) ? reIsNative : reIsHostCtor).test(value);
 }
 
 module.exports = clone;

package.json

 {
   "name": "lodash.clone",
-  "version": "3.0.3",
-  "description": "The modern build of lodash’s `_.clone` as a module.",
+  "version": "4.0.0",
+  "description": "The lodash method `_.clone` exported as a module.",
   "homepage": "https://lodash.com/",
   "icon": "https://lodash.com/icon.svg",
   "license": "MIT",
-  "keywords": "lodash, lodash-modularized, stdlib, util",
+  "keywords": "lodash, lodash-modularized, stdlib, util, clone",
   "author": "John-David Dalton <[e-mail]> (http://allyoucanleet.com/)",
   "contributors": [
     "John-David Dalton <[e-mail]> (http://allyoucanleet.com/)",
-    "Benjamin Tan <[e-mail]> (https://d10.github.io/)",
-    "Blaine Bublitz <[e-mail]> (http://www.iceddev.com/)",
-    "Kit Cambridge <[e-mail]> (http://kitcambridge.be/)",
+    "Blaine Bublitz <[e-mail]> (https://github.com/phated)",
     "Mathias Bynens <[e-mail]> (https://mathiasbynens.be/)"
@@ -20,6 +18,7 @@ ],
   "dependencies": {
-    "lodash._baseclone": "^3.0.0",
-    "lodash._bindcallback": "^3.0.0",
-    "lodash._isiterateecall": "^3.0.0"
+    "lodash._arrayeach": "^3.0.0",
+    "lodash._basefor": "^3.0.0",
+    "lodash._stack": "^3.0.0",
+    "lodash.keys": "^4.0.0"
   }
 }

README.md

@@ -1,4 +0,4 @@
-# lodash.clone v3.0.3
+# lodash.clone v4.0.0
 
-The [modern build](https://github.com/lodash/lodash/wiki/Build-Differences) of [lodash’s](https://lodash.com/) `_.clone` exported as a [Node.js](http://nodejs.org/)/[io.js](https://iojs.org/) module.
+The [lodash](https://lodash.com/) method `_.clone` exported as a [Node.js](https://nodejs.org/) module.
 
@@ -8,3 +8,2 @@ ## Installation
 Using npm:
-
 ```bash
@@ -15,4 +14,3 @@ $ {sudo -H} npm i -g npm
 
-In Node.js/io.js:
-
+In Node.js:
 ```js
@@ -22,2 +20,2 @@ var clone = require('lodash.clone');
 
-See the [documentation](https://lodash.com/docs#clone) or [package source](https://github.com/lodash/lodash/blob/3.0.3-npm-packages/lodash.clone) for more details.
+See the [documentation](https://lodash.com/docs#clone) or [package source](https://github.com/lodash/lodash/blob/4.0.0-npm-packages/lodash.clone) for more details.

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Improved metrics

Total package byte prevSize

24693

increased by348.64%

Lines of code

739

increased by872.37%

Worsened metrics

Dependency count

4

increased by33.33%

Number of lines in readme file

19

decreased by-9.52%

Number of medium supply chain risk alerts

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increased byInfinity%

Dependency changes

• + Addedlodash._arrayeach@^3.0.0

• + Addedlodash._basefor@^3.0.0

• + Addedlodash._stack@^3.0.0

• + Addedlodash.keys@^4.0.0

• + Addedlodash.keys@4.2.0(transitive)

• - Removedlodash._baseclone@^3.0.0

• - Removedlodash._bindcallback@^3.0.0

• - Removedlodash._isiterateecall@^3.0.0

• - Removedlodash._arraycopy@3.0.0(transitive)

• - Removedlodash._baseassign@3.2.0(transitive)

• - Removedlodash._baseclone@3.3.0(transitive)

• - Removedlodash._basecopy@3.0.1(transitive)

• - Removedlodash._bindcallback@3.0.1(transitive)

• - Removedlodash._getnative@3.9.1(transitive)

• - Removedlodash._isiterateecall@3.0.9(transitive)

• - Removedlodash.isarguments@3.1.0(transitive)

• - Removedlodash.isarray@3.0.4(transitive)

• - Removedlodash.keys@3.1.2(transitive)