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every.js
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import arrayEvery from './internal/arrayEvery';
import baseEvery from './internal/baseEvery';
import baseIteratee from './internal/baseIteratee';
import isArray from './isArray';
import isIterateeCall from './internal/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).
*
* @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 all elements pass the predicate check, else `false`.
* @example
*
* _.every([true, 1, null, 'yes'], Boolean);
* // => false
*
* var users = [
* { 'user': 'barney', 'active': false },
* { 'user': 'fred', 'active': false }
* ];
*
* // using the `_.matches` iteratee shorthand
* _.every(users, { 'user': 'barney', 'active': false });
* // => false
*
* // using the `_.matchesProperty` iteratee shorthand
* _.every(users, ['active', false]);
* // => true
*
* // using 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));
}
export default every;