mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-02-03 08:37:49 +00:00
Bump to v3.0.0.
This commit is contained in:
162
lodash.isarray/index.js
Normal file
162
lodash.isarray/index.js
Normal file
@@ -0,0 +1,162 @@
|
||||
/**
|
||||
* lodash 3.0.0 (Custom Build) <https://lodash.com/>
|
||||
* Build: `lodash modern modularize exports="npm" -o ./`
|
||||
* Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
|
||||
* Based on Underscore.js 1.7.0 <http://underscorejs.org/LICENSE>
|
||||
* Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
|
||||
* Available under MIT license <https://lodash.com/license>
|
||||
*/
|
||||
|
||||
/** `Object#toString` result references. */
|
||||
var arrayTag = '[object Array]',
|
||||
funcTag = '[object Function]';
|
||||
|
||||
/** Used to detect host constructors (Safari > 5). */
|
||||
var reHostCtor = /^\[object .+?Constructor\]$/;
|
||||
|
||||
/**
|
||||
* Used to match `RegExp` special characters.
|
||||
* See this [article on `RegExp` characters](http://www.regular-expressions.info/characters.html#special)
|
||||
* for more details.
|
||||
*/
|
||||
var reRegExpChars = /[.*+?^${}()|[\]\/\\]/g,
|
||||
reHasRegExpChars = RegExp(reRegExpChars.source);
|
||||
|
||||
/**
|
||||
* Converts `value` to a string if it is not one. An empty string is returned
|
||||
* for `null` or `undefined` values.
|
||||
*
|
||||
* @private
|
||||
* @param {*} value The value to process.
|
||||
* @returns {string} Returns the string.
|
||||
*/
|
||||
function baseToString(value) {
|
||||
if (typeof value == 'string') {
|
||||
return value;
|
||||
}
|
||||
return value == null ? '' : (value + '');
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if `value` is object-like.
|
||||
*
|
||||
* @private
|
||||
* @param {*} value The value to check.
|
||||
* @returns {boolean} Returns `true` if `value` is object-like, else `false`.
|
||||
*/
|
||||
function isObjectLike(value) {
|
||||
return (value && typeof value == 'object') || false;
|
||||
}
|
||||
|
||||
/** Used for native method references. */
|
||||
var objectProto = Object.prototype;
|
||||
|
||||
/** Used to resolve the decompiled source of functions. */
|
||||
var fnToString = Function.prototype.toString;
|
||||
|
||||
/**
|
||||
* Used to resolve the `toStringTag` of values.
|
||||
* See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
|
||||
* for more details.
|
||||
*/
|
||||
var objToString = objectProto.toString;
|
||||
|
||||
/** Used to detect if a method is native. */
|
||||
var reNative = RegExp('^' +
|
||||
escapeRegExp(objToString)
|
||||
.replace(/toString|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
|
||||
);
|
||||
|
||||
/* Native method references for those with the same name as other `lodash` methods. */
|
||||
var nativeIsArray = isNative(nativeIsArray = Array.isArray) && nativeIsArray;
|
||||
|
||||
/**
|
||||
* Used as the maximum length of an array-like value.
|
||||
* See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
|
||||
* for more details.
|
||||
*/
|
||||
var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;
|
||||
|
||||
/**
|
||||
* Checks if `value` is a valid array-like length.
|
||||
*
|
||||
* **Note:** This function is based on ES `ToLength`. See the
|
||||
* [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength)
|
||||
* for more details.
|
||||
*
|
||||
* @private
|
||||
* @param {*} value The value to check.
|
||||
* @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
|
||||
*/
|
||||
function isLength(value) {
|
||||
return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if `value` is classified as an `Array` object.
|
||||
*
|
||||
* @static
|
||||
* @memberOf _
|
||||
* @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(function() { return arguments; }());
|
||||
* // => false
|
||||
*/
|
||||
var isArray = nativeIsArray || function(value) {
|
||||
return (isObjectLike(value) && isLength(value.length) && objToString.call(value) == arrayTag) || false;
|
||||
};
|
||||
|
||||
/**
|
||||
* 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;
|
||||
}
|
||||
if (objToString.call(value) == funcTag) {
|
||||
return reNative.test(fnToString.call(value));
|
||||
}
|
||||
return (isObjectLike(value) && reHostCtor.test(value)) || false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Escapes the `RegExp` special characters "\", "^", "$", ".", "|", "?", "*",
|
||||
* "+", "(", ")", "[", "]", "{" and "}" in `string`.
|
||||
*
|
||||
* @static
|
||||
* @memberOf _
|
||||
* @category String
|
||||
* @param {string} [string=''] The string to escape.
|
||||
* @returns {string} Returns the escaped string.
|
||||
* @example
|
||||
*
|
||||
* _.escapeRegExp('[lodash](https://lodash.com/)');
|
||||
* // => '\[lodash\]\(https://lodash\.com/\)'
|
||||
*/
|
||||
function escapeRegExp(string) {
|
||||
string = baseToString(string);
|
||||
return (string && reHasRegExpChars.test(string))
|
||||
? string.replace(reRegExpChars, '\\$&')
|
||||
: string;
|
||||
}
|
||||
|
||||
module.exports = isArray;
|
||||
Reference in New Issue
Block a user