add hw2

node_modules/lodash-es/every.js

@@ -0,0 +1,56 @@
+import arrayEvery from './_arrayEvery.js';
+import baseEvery from './_baseEvery.js';
+import baseIteratee from './_baseIteratee.js';
+import isArray from './isArray.js';
+import isIterateeCall from './_isIterateeCall.js';
+
+/**
+ * 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));
+}
+
+export default every;