feat(every): add every function

src/every.js

@@ -0,0 +1,45 @@
+// o
+import is from './is';
+import empty from './empty';
+import each from './each';
+
+/**
+ * Check every element in an object evaluate to the iterator
+ *
+ * @param {object} object The object to check
+ * @param {function(key: string, value: *)} iterator The function to evaluate
+ * @param {boolean} follow Whether to follow objects
+ *
+ * @returns {boolean} Whether all objects evaluate to the iterator
+ */
+function every(object, iterator, follow = false) {
+  // if the object is an object and is not empty
+  if (is(object) && !empty(object)) {
+    // set the result to true so we can change it
+    // to false if the iterator fails
+    let result = true;
+
+    // for each over the object keys and values
+    // follow is passed into each therefore the
+    // each function works out whether to follow
+    // the objects
+    each(object, (key, value) => {
+      // run the iterator function on the key and
+      // value and if it evaluates to false set
+      // the result to false
+      if (iterator(key, value) === false) {
+        // set the result to false
+        result = false;
+      }
+    }, follow);
+
+    // return the result
+    return result;
+  }
+
+  // if the object isn't an object or is empty return false
+  // because the iterator can't be ran to make a check
+  return false;
+}
+
+export default every;