fixup

lib/index.js

@@ -15,9 +15,9 @@ const walkers = require('./walkers');
  * @param {object} options.levels          The level map. The key is path to level, the value is options for this level.
  * @param {object} options.defaults        The options for levels by default.
  * @param {object} options.defaults.naming Any options for `bem-naming`.
- * @param {String} options.defaults.scheme The name of level scheme. Available values: `flat` or `nested`.
+ * @param {string} options.defaults.scheme The name of level scheme. Available values: `flat` or `nested`.
  *
- * @returns {stream} readable stream with info about found files and directories.
+ * @returns {module:stream.Readable} stream with info about found files and directories.
  */
 module.exports = function (levels, options) {
     options || (options = {});
@@ -28,13 +28,8 @@ module.exports = function (levels, options) {
     const defaultWalker = (typeof defaults.scheme === 'string' ? walkers[defaults.scheme] : defaults.scheme)
         || walkers.nested;
 
-    const output = new Readable({ objectMode: true });
-
-    output._read = function () {};
-
-    function add(obj) {
-        output.push(obj);
-    }
+    const output = new Readable({ objectMode: true, read: () => {} });
+    const add = (obj) => output.push(obj);
 
     function scan(level, callback) {
         const config = levelConfigs[level];