lodash.isempty - npm Package Compare versions

Comparing version 4.0.0 to 4.1.0

index.js

 /**
- * lodash 4.0.0 (Custom Build) <https://lodash.com/>
+ * lodash 4.1.0 (Custom Build) <https://lodash.com/>
  * Build: `lodash modularize exports="npm" -o ./`
@@ -9,8 +9,11 @@ * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
  */
-var keys = require('lodash.keys'),
-    size = require('lodash.size');
 
+/** Used as references for various `Number` constants. */
+var MAX_SAFE_INTEGER = 9007199254740991;
+
 /** `Object#toString` result references. */
-var funcTag = '[object Function]',
-    genTag = '[object GeneratorFunction]';
+var argsTag = '[object Arguments]',
+    funcTag = '[object Function]',
+    genTag = '[object GeneratorFunction]',
+    stringTag = '[object String]';
 
@@ -20,2 +23,5 @@ /** Used for built-in method references. */
 
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
 /**
@@ -27,3 +33,136 @@ * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
 
+/** Built-in value references. */
+var propertyIsEnumerable = objectProto.propertyIsEnumerable;
+
 /**
+ * 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 function.
+ */
+function baseProperty(key) {
+  return function(object) {
+    return object == null ? undefined : object[key];
+  };
+}
+
+/**
+ * Gets the "length" property value of `object`.
+ *
+ * **Note:** This function is used to avoid a [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792)
+ * that affects Safari on at least iOS 8.1-8.3 ARM64.
+ *
+ * @private
+ * @param {Object} object The object to query.
+ * @returns {*} Returns the "length" value.
+ */
+var getLength = baseProperty('length');
+
+/**
+ * Checks if `value` is likely an `arguments` object.
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is correctly classified, 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 _
+ * @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 array-like. A value is considered array-like if it's
+ * not a function and has a `value.length` that's an integer greater than or
+ * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
+ *
+ * @static
+ * @memberOf _
+ * @type Function
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
+ * @example
+ *
+ * _.isArrayLike([1, 2, 3]);
+ * // => true
+ *
+ * _.isArrayLike(document.body.children);
+ * // => true
+ *
+ * _.isArrayLike('abc');
+ * // => true
+ *
+ * _.isArrayLike(_.noop);
+ * // => false
+ */
+function isArrayLike(value) {
+  return value != null &&
+    !(typeof value == 'function' && isFunction(value)) && isLength(getLength(value));
+}
+
+/**
+ * This method is like `_.isArrayLike` except that it also checks if `value`
+ * is an object.
+ *
+ * @static
+ * @memberOf _
+ * @type Function
+ * @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 empty. A value is considered empty unless it's an
@@ -56,5 +195,12 @@ * `arguments` object, array, string, or jQuery-like collection with a length
 function isEmpty(value) {
-  return (!isObjectLike(value) || isFunction(value.splice))
-    ? !size(value)
-    : !keys(value).length;
+  if (isArrayLike(value) &&
+      (isArray(value) || isString(value) || isFunction(value.splice) || isArguments(value))) {
+    return !value.length;
+  }
+  for (var key in value) {
+    if (hasOwnProperty.call(value, key)) {
+      return false;
+    }
+  }
+  return true;
 }
@@ -87,2 +233,30 @@
 /**
+ * Checks if `value` is a valid array-like length.
+ *
+ * **Note:** This function is loosely based on [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
+ * @example
+ *
+ * _.isLength(3);
+ * // => true
+ *
+ * _.isLength(Number.MIN_VALUE);
+ * // => false
+ *
+ * _.isLength(Infinity);
+ * // => false
+ *
+ * _.isLength('3');
+ * // => false
+ */
+function isLength(value) {
+  return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
+}
+
+/**
  * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
@@ -111,4 +285,2 @@ * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
 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;
@@ -145,2 +317,23 @@ return !!value && (type == 'object' || type == 'function');
 
+/**
+ * Checks if `value` is classified as a `String` primitive or object.
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
+ * @example
+ *
+ * _.isString('abc');
+ * // => true
+ *
+ * _.isString(1);
+ * // => false
+ */
+function isString(value) {
+  return typeof value == 'string' ||
+    (!isArray(value) && isObjectLike(value) && objectToString.call(value) == stringTag);
+}
+
 module.exports = isEmpty;

package.json

 {
   "name": "lodash.isempty",
-  "version": "4.0.0",
+  "version": "4.1.0",
   "description": "The lodash method `_.isEmpty` exported as a module.",
@@ -8,3 +8,3 @@ "homepage": "https://lodash.com/",
   "license": "MIT",
-  "keywords": "lodash, lodash-modularized, stdlib, util, isempty",
+  "keywords": "lodash-modularized, isempty",
   "author": "John-David Dalton <[e-mail]> (http://allyoucanleet.com/)",
@@ -17,7 +17,3 @@ "contributors": [
   "repository": "lodash/lodash",
-  "scripts": { "test": "echo \"See https://travis-ci.org/lodash/lodash-cli for testing details.\"" },
-  "dependencies": {
-    "lodash.keys": "^4.0.0",
-    "lodash.size": "^4.0.0"
-  }
+  "scripts": { "test": "echo \"See https://travis-ci.org/lodash/lodash-cli for testing details.\"" }
 }

README.md

@@ -1,2 +0,2 @@
-# lodash.isempty v4.0.0
+# lodash.isempty v4.1.0
 
@@ -18,2 +18,2 @@ The [lodash](https://lodash.com/) method `_.isEmpty` exported as a [Node.js](https://nodejs.org/) module.
 
-See the [documentation](https://lodash.com/docs#isEmpty) or [package source](https://github.com/lodash/lodash/blob/4.0.0-npm-packages/lodash.isempty) for more details.
+See the [documentation](https://lodash.com/docs#isEmpty) or [package source](https://github.com/lodash/lodash/blob/4.1.0-npm-packages/lodash.isempty) for more details.

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Improved metrics

Total package byte prevSize

10736

increased by74.03%

Dependency count

0

decreased by-100%

Lines of code

313

increased by138.93%

Dependency changes

• - Removedlodash.keys@^4.0.0

• - Removedlodash.size@^4.0.0

• - Removedlodash.keys@4.2.0(transitive)

• - Removedlodash.size@4.2.0(transitive)