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Diffstat (limited to 'node_modules/lodash._isiterateecall/index.js')
-rw-r--r-- | node_modules/lodash._isiterateecall/index.js | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/node_modules/lodash._isiterateecall/index.js b/node_modules/lodash._isiterateecall/index.js new file mode 100644 index 000000000..ea3761b6c --- /dev/null +++ b/node_modules/lodash._isiterateecall/index.js @@ -0,0 +1,132 @@ +/** + * lodash 3.0.9 (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 1.8.3 <http://underscorejs.org/LICENSE> + * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors + * Available under MIT license <https://lodash.com/license> + */ + +/** Used to detect unsigned integer values. */ +var reIsUint = /^\d+$/; + +/** + * Used as the [maximum length](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer) + * of an array-like value. + */ +var MAX_SAFE_INTEGER = 9007199254740991; + +/** + * 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 array-like. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is array-like, else `false`. + */ +function isArrayLike(value) { + return value != null && isLength(getLength(value)); +} + +/** + * Checks if `value` is a valid array-like index. + * + * @private + * @param {*} value The value to check. + * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index. + * @returns {boolean} Returns `true` if `value` is a valid index, else `false`. + */ +function isIndex(value, length) { + value = (typeof value == 'number' || reIsUint.test(value)) ? +value : -1; + length = length == null ? MAX_SAFE_INTEGER : length; + return value > -1 && value % 1 == 0 && value < length; +} + +/** + * Checks if the provided arguments are from an iteratee call. + * + * @private + * @param {*} value The potential iteratee value argument. + * @param {*} index The potential iteratee index or key argument. + * @param {*} object The potential iteratee object argument. + * @returns {boolean} Returns `true` if the arguments are from an iteratee call, else `false`. + */ +function isIterateeCall(value, index, object) { + if (!isObject(object)) { + return false; + } + var type = typeof index; + if (type == 'number' + ? (isArrayLike(object) && isIndex(index, object.length)) + : (type == 'string' && index in object)) { + var other = object[index]; + return value === value ? (value === other) : (other !== other); + } + return false; +} + +/** + * Checks if `value` is a valid array-like length. + * + * **Note:** This function is based on [`ToLength`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength). + * + * @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 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(1); + * // => 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'); +} + +module.exports = isIterateeCall; |