lodash.assign - npm Package Compare versions

Comparing version 4.0.9 to 4.1.0

index.js

@@ -9,4 +9,2 @@ /**
  */
-var keys = require('lodash.keys'),
-    rest = require('lodash.rest');
 
@@ -17,4 +15,6 @@ /** Used as references for various `Number` constants. */
 /** `Object#toString` result references. */
-var funcTag = '[object Function]',
-    genTag = '[object GeneratorFunction]';
+var argsTag = '[object Arguments]',
+    funcTag = '[object Function]',
+    genTag = '[object GeneratorFunction]',
+    stringTag = '[object String]';
 
@@ -24,2 +24,68 @@ /** Used to detect unsigned integer values. */
 
+/**
+ * A faster alternative to `Function#apply`, this function invokes `func`
+ * with the `this` binding of `thisArg` and the arguments of `args`.
+ *
+ * @private
+ * @param {Function} func The function to invoke.
+ * @param {*} thisArg The `this` binding of `func`.
+ * @param {Array} args The arguments to invoke `func` with.
+ * @returns {*} Returns the result of `func`.
+ */
+function apply(func, thisArg, args) {
+  switch (args.length) {
+    case 0: return func.call(thisArg);
+    case 1: return func.call(thisArg, args[0]);
+    case 2: return func.call(thisArg, args[0], args[1]);
+    case 3: return func.call(thisArg, args[0], args[1], args[2]);
+  }
+  return func.apply(thisArg, args);
+}
+
+/**
+ * The base implementation of `_.property` without support for deep paths.
+ *
+ * @private
+ * @param {string} key The key of the property to get.
+ * @returns {Function} Returns the new accessor function.
+ */
+function baseProperty(key) {
+  return function(object) {
+    return object == null ? undefined : object[key];
+  };
+}
+
+/**
+ * The base implementation of `_.times` without support for iteratee shorthands
+ * or max array length checks.
+ *
+ * @private
+ * @param {number} n The number of times to invoke `iteratee`.
+ * @param {Function} iteratee The function invoked per iteration.
+ * @returns {Array} Returns the array of results.
+ */
+function baseTimes(n, iteratee) {
+  var index = -1,
+      result = Array(n);
+
+  while (++index < n) {
+    result[index] = iteratee(index);
+  }
+  return result;
+}
+
+/**
+ * Creates a function that invokes `func` with its first argument transformed.
+ *
+ * @private
+ * @param {Function} func The function to wrap.
+ * @param {Function} transform The argument transform.
+ * @returns {Function} Returns the new function.
+ */
+function overArg(func, transform) {
+  return function(arg) {
+    return func(transform(arg));
+  };
+}
+
 /** Used for built-in method references. */
@@ -41,2 +107,7 @@ var objectProto = Object.prototype;
 
+/* Built-in method references for those with the same name as other `lodash` methods. */
+var nativeGetPrototype = Object.getPrototypeOf,
+    nativeKeys = Object.keys,
+    nativeMax = Math.max;
+
 /** Detect if properties shadowing those on `Object.prototype` are non-enumerable. */
@@ -64,11 +135,54 @@ var nonEnumShadows = !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf');
 /**
- * The base implementation of `_.property` without support for deep paths.
+ * The base implementation of `_.has` without support for deep paths.
  *
  * @private
- * @param {string} key The key of the property to get.
- * @returns {Function} Returns the new accessor function.
+ * @param {Object} [object] The object to query.
+ * @param {Array|string} key The key to check.
+ * @returns {boolean} Returns `true` if `key` exists, else `false`.
  */
-function baseProperty(key) {
-  return function(object) {
-    return object == null ? undefined : object[key];
+function baseHas(object, key) {
+  // Avoid a bug in IE 10-11 where objects with a [[Prototype]] of `null`,
+  // that are composed entirely of index properties, return `false` for
+  // `hasOwnProperty` checks of them.
+  return object != null &&
+    (hasOwnProperty.call(object, key) ||
+      (typeof object == 'object' && key in object && getPrototype(object) === null));
+}
+
+/**
+ * The base implementation of `_.keys` which doesn't skip the constructor
+ * property of prototypes or treat sparse arrays as dense.
+ *
+ * @private
+ * @param {Object} object The object to query.
+ * @returns {Array} Returns the array of property names.
+ */
+var baseKeys = overArg(nativeKeys, Object);
+
+/**
+ * The base implementation of `_.rest` which doesn't validate or coerce arguments.
+ *
+ * @private
+ * @param {Function} func The function to apply a rest parameter to.
+ * @param {number} [start=func.length-1] The start position of the rest parameter.
+ * @returns {Function} Returns the new function.
+ */
+function baseRest(func, start) {
+  start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
+  return function() {
+    var args = arguments,
+        index = -1,
+        length = nativeMax(args.length - start, 0),
+        array = Array(length);
+
+    while (++index < length) {
+      array[index] = args[start + index];
+    }
+    index = -1;
+    var otherArgs = Array(start + 1);
+    while (++index < start) {
+      otherArgs[index] = args[index];
+    }
+    otherArgs[start] = array;
+    return apply(func, this, otherArgs);
   };
@@ -98,5 +212,5 @@ }
       ? customizer(object[key], source[key], key, object, source)
-      : source[key];
+      : undefined;
 
-    assignValue(object, key, newValue);
+    assignValue(object, key, newValue === undefined ? source[key] : newValue);
   }
@@ -114,3 +228,3 @@ return object;
 function createAssigner(assigner) {
-  return rest(function(object, sources) {
+  return baseRest(function(object, sources) {
     var index = -1,
@@ -154,2 +268,28 @@ length = sources.length,
 /**
+ * Gets the `[[Prototype]]` of `value`.
+ *
+ * @private
+ * @param {*} value The value to query.
+ * @returns {null|Object} Returns the `[[Prototype]]`.
+ */
+var getPrototype = overArg(nativeGetPrototype, Object);
+
+/**
+ * Creates an array of index keys for `object` values of arrays,
+ * `arguments` objects, and strings, otherwise `null` is returned.
+ *
+ * @private
+ * @param {Object} object The object to query.
+ * @returns {Array|null} Returns index keys, else `null`.
+ */
+function indexKeys(object) {
+  var length = object ? object.length : undefined;
+  if (isLength(length) &&
+      (isArray(object) || isString(object) || isArguments(object))) {
+    return baseTimes(length, String);
+  }
+  return null;
+}
+
+/**
  * Checks if `value` is a valid array-like index.
@@ -221,4 +361,4 @@ *
  *
- * var object = { 'user': 'fred' };
- * var other = { 'user': 'fred' };
+ * var object = { 'a': 1 };
+ * var other = { 'a': 1 };
  *
@@ -245,2 +385,51 @@ * _.eq(object, object);
 /**
+ * Checks if `value` is likely an `arguments` object.
+ *
+ * @static
+ * @memberOf _
+ * @since 0.1.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is an `arguments` object,
+ *  else `false`.
+ * @example
+ *
+ * _.isArguments(function() { return arguments; }());
+ * // => true
+ *
+ * _.isArguments([1, 2, 3]);
+ * // => false
+ */
+function isArguments(value) {
+  // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode.
+  return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&
+    (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);
+}
+
+/**
+ * Checks if `value` is classified as an `Array` object.
+ *
+ * @static
+ * @memberOf _
+ * @since 0.1.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is an array, 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 array-like. A value is considered array-like if it's
@@ -275,2 +464,31 @@ * not a function and has a `value.length` that's an integer greater than or
 /**
+ * This method is like `_.isArrayLike` except that it also checks if `value`
+ * is an object.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is an array-like object,
+ *  else `false`.
+ * @example
+ *
+ * _.isArrayLikeObject([1, 2, 3]);
+ * // => true
+ *
+ * _.isArrayLikeObject(document.body.children);
+ * // => true
+ *
+ * _.isArrayLikeObject('abc');
+ * // => false
+ *
+ * _.isArrayLikeObject(_.noop);
+ * // => false
+ */
+function isArrayLikeObject(value) {
+  return isObjectLike(value) && isArrayLike(value);
+}
+
+/**
  * Checks if `value` is classified as a `Function` object.
@@ -283,4 +501,3 @@ *
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified,
- *  else `false`.
+ * @returns {boolean} Returns `true` if `value` is a function, else `false`.
  * @example
@@ -365,2 +582,52 @@ *
 /**
+ * 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 _
+ * @since 4.0.0
+ * @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 classified as a `String` primitive or object.
+ *
+ * @static
+ * @since 0.1.0
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a string, else `false`.
+ * @example
+ *
+ * _.isString('abc');
+ * // => true
+ *
+ * _.isString(1);
+ * // => false
+ */
+function isString(value) {
+  return typeof value == 'string' ||
+    (!isArray(value) && isObjectLike(value) && objectToString.call(value) == stringTag);
+}
+
+/**
  * Assigns own enumerable string keyed properties of source objects to the
@@ -384,14 +651,14 @@ * destination object. Source objects are applied from left to right.
  * function Foo() {
- *   this.c = 3;
+ *   this.a = 1;
  * }
  *
  * function Bar() {
- *   this.e = 5;
+ *   this.c = 3;
  * }
  *
- * Foo.prototype.d = 4;
- * Bar.prototype.f = 6;
+ * Foo.prototype.b = 2;
+ * Bar.prototype.d = 4;
  *
- * _.assign({ 'a': 1 }, new Foo, new Bar);
- * // => { 'a': 1, 'c': 3, 'e': 5 }
+ * _.assign({ 'a': 0 }, new Foo, new Bar);
+ * // => { 'a': 1, 'c': 3 }
  */
@@ -410,2 +677,50 @@ var assign = createAssigner(function(object, source) {
 
+/**
+ * Creates an array of the own enumerable property names of `object`.
+ *
+ * **Note:** Non-object values are coerced to objects. See the
+ * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys)
+ * for more details.
+ *
+ * @static
+ * @since 0.1.0
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to query.
+ * @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']
+ */
+function keys(object) {
+  var isProto = isPrototype(object);
+  if (!(isProto || isArrayLike(object))) {
+    return baseKeys(object);
+  }
+  var indexes = indexKeys(object),
+      skipIndexes = !!indexes,
+      result = indexes || [],
+      length = result.length;
+
+  for (var key in object) {
+    if (baseHas(object, key) &&
+        !(skipIndexes && (key == 'length' || isIndex(key, length))) &&
+        !(isProto && key == 'constructor')) {
+      result.push(key);
+    }
+  }
+  return result;
+}
+
 module.exports = assign;

package.json

 {
   "name": "lodash.assign",
-  "version": "4.0.9",
+  "version": "4.1.0",
   "description": "The lodash method `_.assign` exported as a module.",
@@ -16,7 +16,3 @@ "homepage": "https://lodash.com/",
   "repository": "lodash/lodash",
-  "scripts": { "test": "echo \"See https://travis-ci.org/lodash/lodash-cli for testing details.\"" },
-  "dependencies": {
-    "lodash.keys": "^4.0.0",
-    "lodash.rest": "^4.0.0"
-  }
+  "scripts": { "test": "echo \"See https://travis-ci.org/lodash/lodash-cli for testing details.\"" }
 }

README.md

@@ -1,2 +0,2 @@
-# lodash.assign v4.0.9
+# lodash.assign v4.1.0
 
@@ -18,2 +18,2 @@ The [lodash](https://lodash.com/) method `_.assign` exported as a [Node.js](https://nodejs.org/) module.
 
-See the [documentation](https://lodash.com/docs#assign) or [package source](https://github.com/lodash/lodash/blob/4.0.9-npm-packages/lodash.assign) for more details.
+See the [documentation](https://lodash.com/docs#assign) or [package source](https://github.com/lodash/lodash/blob/4.1.0-npm-packages/lodash.assign) for more details.

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Improved metrics

Total package byte prevSize

21981

increased by58.14%

Dependency count

0

decreased by-100%

Lines of code

663

increased by81.15%

Dependency changes

• - Removedlodash.keys@^4.0.0

• - Removedlodash.rest@^4.0.0

• - Removedlodash.keys@4.2.0(transitive)

• - Removedlodash.rest@4.0.5(transitive)