You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
229 lines
5.6 KiB
229 lines
5.6 KiB
/**
|
|
* lodash (Custom Build) <https://lodash.com/>
|
|
* Build: `lodash modularize exports="npm" -o ./`
|
|
* Copyright jQuery Foundation and other contributors <https://jquery.org/>
|
|
* Released under MIT license <https://lodash.com/license>
|
|
* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
|
|
* Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
|
|
*/
|
|
|
|
/** Used as references for various `Number` constants. */
|
|
var MAX_SAFE_INTEGER = 9007199254740991;
|
|
|
|
/** `Object#toString` result references. */
|
|
var argsTag = '[object Arguments]',
|
|
funcTag = '[object Function]',
|
|
genTag = '[object GeneratorFunction]';
|
|
|
|
/** Used for built-in method references. */
|
|
var objectProto = Object.prototype;
|
|
|
|
/** Used to check objects for own properties. */
|
|
var hasOwnProperty = objectProto.hasOwnProperty;
|
|
|
|
/**
|
|
* Used to resolve the
|
|
* [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
|
|
* of values.
|
|
*/
|
|
var objectToString = objectProto.toString;
|
|
|
|
/** Built-in value references. */
|
|
var propertyIsEnumerable = objectProto.propertyIsEnumerable;
|
|
|
|
/**
|
|
* 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 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 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 _
|
|
* @since 4.0.0
|
|
* @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 && isLength(value.length) && !isFunction(value);
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @since 0.1.0
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is a function, else `false`.
|
|
* @example
|
|
*
|
|
* _.isFunction(_);
|
|
* // => true
|
|
*
|
|
* _.isFunction(/abc/);
|
|
* // => false
|
|
*/
|
|
function isFunction(value) {
|
|
// The use of `Object#toString` avoids issues with the `typeof` operator
|
|
// in Safari 8-9 which returns 'object' for typed array and other constructors.
|
|
var tag = isObject(value) ? objectToString.call(value) : '';
|
|
return tag == funcTag || tag == genTag;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is a valid array-like length.
|
|
*
|
|
* **Note:** This method is loosely based on
|
|
* [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @since 4.0.0
|
|
* @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](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
|
|
* of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @since 0.1.0
|
|
* @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) {
|
|
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 _
|
|
* @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';
|
|
}
|
|
|
|
module.exports = isArguments;
|