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Diffstat (limited to 'node_modules/lodash/every.js')
-rw-r--r-- | node_modules/lodash/every.js | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/node_modules/lodash/every.js b/node_modules/lodash/every.js new file mode 100644 index 0000000..25080da --- /dev/null +++ b/node_modules/lodash/every.js @@ -0,0 +1,56 @@ +var arrayEvery = require('./_arrayEvery'), + baseEvery = require('./_baseEvery'), + baseIteratee = require('./_baseIteratee'), + isArray = require('./isArray'), + isIterateeCall = require('./_isIterateeCall'); + +/** + * Checks if `predicate` returns truthy for **all** elements of `collection`. + * Iteration is stopped once `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index|key, collection). + * + * **Note:** This method returns `true` for + * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because + * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of + * elements of empty collections. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false`. + * @example + * + * _.every([true, 1, null, 'yes'], Boolean); + * // => false + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': false } + * ]; + * + * // The `_.matches` iteratee shorthand. + * _.every(users, { 'user': 'barney', 'active': false }); + * // => false + * + * // The `_.matchesProperty` iteratee shorthand. + * _.every(users, ['active', false]); + * // => true + * + * // The `_.property` iteratee shorthand. + * _.every(users, 'active'); + * // => false + */ +function every(collection, predicate, guard) { + var func = isArray(collection) ? arrayEvery : baseEvery; + if (guard && isIterateeCall(collection, predicate, guard)) { + predicate = undefined; + } + return func(collection, baseIteratee(predicate, 3)); +} + +module.exports = every; |