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node_modules/lodash.some/index.js 9.16 KB
f7563de62   Palak Handa   first commit
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  /**
   * lodash 4.2.0 (Custom Build) <https://lodash.com/>
   * Build: `lodash modularize exports="npm" -o ./`
   * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   * Available under MIT license <https://lodash.com/license>
   */
  var baseEach = require('lodash._baseeach'),
      baseIteratee = require('lodash._baseiteratee');
  
  /** Used as references for various `Number` constants. */
  var MAX_SAFE_INTEGER = 9007199254740991;
  
  /** `Object#toString` result references. */
  var funcTag = '[object Function]',
      genTag = '[object GeneratorFunction]';
  
  /** Used to detect unsigned integer values. */
  var reIsUint = /^(?:0|[1-9]\d*)$/;
  
  /**
   * A specialized version of `_.some` for arrays without support for iteratee
   * shorthands.
   *
   * @private
   * @param {Array} array The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {boolean} Returns `true` if any element passes the predicate check, else `false`.
   */
  function arraySome(array, predicate) {
    var index = -1,
        length = array.length;
  
    while (++index < length) {
      if (predicate(array[index], index, array)) {
        return true;
      }
    }
    return false;
  }
  
  /**
   * 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;
  }
  
  /** Used for built-in method references. */
  var objectProto = Object.prototype;
  
  /**
   * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
   * of values.
   */
  var objectToString = objectProto.toString;
  
  /**
   * 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];
    };
  }
  
  /**
   * The base implementation of `_.some` without support for iteratee shorthands.
   *
   * @private
   * @param {Array|Object} collection The collection to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {boolean} Returns `true` if any element passes the predicate check, else `false`.
   */
  function baseSome(collection, predicate) {
    var result;
  
    baseEach(collection, function(value, index, collection) {
      result = predicate(value, index, collection);
      return !result;
    });
    return !!result;
  }
  
  /**
   * 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 the given 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)) {
      return eq(object[index], value);
    }
    return false;
  }
  
  /**
   * Checks if `predicate` returns truthy for **any** element of `collection`.
   * Iteration is stopped once `predicate` returns truthy. The predicate is
   * invoked with three arguments: (value, index|key, collection).
   *
   * @static
   * @memberOf _
   * @category Collection
   * @param {Array|Object} collection The collection to iterate over.
   * @param {Function|Object|string} [predicate=_.identity] The function invoked per iteration.
   * @param- {Object} [guard] Enables use as an iteratee for functions like `_.map`.
   * @returns {boolean} Returns `true` if any element passes the predicate check, else `false`.
   * @example
   *
   * _.some([null, 0, 'yes', false], Boolean);
   * // => true
   *
   * var users = [
   *   { 'user': 'barney', 'active': true },
   *   { 'user': 'fred',   'active': false }
   * ];
   *
   * // The `_.matches` iteratee shorthand.
   * _.some(users, { 'user': 'barney', 'active': false });
   * // => false
   *
   * // The `_.matchesProperty` iteratee shorthand.
   * _.some(users, ['active', false]);
   * // => true
   *
   * // The `_.property` iteratee shorthand.
   * _.some(users, 'active');
   * // => true
   */
  function some(collection, predicate, guard) {
    var func = isArray(collection) ? arraySome : baseSome;
    if (guard && isIterateeCall(collection, predicate, guard)) {
      predicate = undefined;
    }
    return func(collection, baseIteratee(predicate, 3));
  }
  
  /**
   * Performs a [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
   * comparison between two values to determine if they are equivalent.
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to compare.
   * @param {*} other The other value to compare.
   * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
   * @example
   *
   * var object = { 'user': 'fred' };
   * var other = { 'user': 'fred' };
   *
   * _.eq(object, object);
   * // => true
   *
   * _.eq(object, other);
   * // => false
   *
   * _.eq('a', 'a');
   * // => true
   *
   * _.eq('a', Object('a'));
   * // => false
   *
   * _.eq(NaN, NaN);
   * // => true
   */
  function eq(value, other) {
    return value === other || (value !== value && other !== other);
  }
  
  /**
   * 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 _
   * @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));
  }
  
  /**
   * Checks if `value` is classified as a `Function` object.
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is correctly classified, 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 which returns 'object' for typed array constructors, and
    // PhantomJS 1.9 which returns 'function' for `NodeList` instances.
    var tag = isObject(value) ? objectToString.call(value) : '';
    return tag == funcTag || tag == genTag;
  }
  
  /**
   * 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`.
   * (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(_.noop);
   * // => true
   *
   * _.isObject(null);
   * // => false
   */
  function isObject(value) {
    var type = typeof value;
    return !!value && (type == 'object' || type == 'function');
  }
  
  module.exports = some;