Bump to v4.0.0.

set.js

@@ -0,0 +1,32 @@
+import baseSet from './internal/baseSet';
+
+/**
+ * Sets the value at `path` of `object`. If a portion of `path` doesn't exist
+ * it's created. Arrays are created for missing index properties while objects
+ * are created for all other missing properties. Use `_.setWith` to customize
+ * `path` creation.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The object to modify.
+ * @param {Array|string} path The path of the property to set.
+ * @param {*} value The value to set.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * var object = { 'a': [{ 'b': { 'c': 3 } }] };
+ *
+ * _.set(object, 'a[0].b.c', 4);
+ * console.log(object.a[0].b.c);
+ * // => 4
+ *
+ * _.set(object, 'x[0].y.z', 5);
+ * console.log(object.x[0].y.z);
+ * // => 5
+ */
+function set(object, path, value) {
+  return object == null ? object : baseSet(object, path, value);
+}
+
+export default set;