Move internal modules to “internal” folder.

.internal/baseEvery.js

@@ -0,0 +1,21 @@
+import baseEach from './.internal/baseEach.js';
+
+/**
+ * The base implementation of `every`.
+ *
+ * @private
+ * @param {Array|Object} collection The collection to iterate over.
+ * @param {Function} predicate The function invoked per iteration.
+ * @returns {boolean} Returns `true` if all elements pass the predicate check,
+ *  else `false`
+ */
+function baseEvery(collection, predicate) {
+  let result = true;
+  baseEach(collection, (value, index, collection) => {
+    result = !!predicate(value, index, collection);
+    return result;
+  });
+  return result;
+}
+
+export default baseEvery;