Make Config an ES2015 class.

Author: realityking

lib/Config.js

@@ -3,33 +3,35 @@
 const path = require('path');
 const debug = require('debug')('tree');
 
-function Config(options) {
-  this.filename = options.filename;
-  this.directory = options.directory || options.root;
-  this.visited = options.visited || {};
-  this.nonExistent = options.nonExistent || [];
-  this.isListForm = options.isListForm;
-  this.requireConfig = options.config || options.requireConfig;
-  this.webpackConfig = options.webpackConfig;
-  this.nodeModulesConfig = options.nodeModulesConfig;
-  this.detectiveConfig = options.detective || options.detectiveConfig || {};
-
-  this.filter = options.filter;
-
-  if (!this.filename) { throw new Error('filename not given'); }
-  if (!this.directory) { throw new Error('directory not given'); }
-  if (this.filter && typeof this.filter !== 'function') { throw new Error('filter must be a function'); }
-
-  debug('given filename: ' + this.filename);
-
-  this.filename = path.resolve(process.cwd(), this.filename);
-
-  debug('resolved filename: ' + this.filename);
-  debug('visited: ', this.visited);
+class Config {
+  constructor(options) {
+    this.filename = options.filename;
+    this.directory = options.directory || options.root;
+    this.visited = options.visited || {};
+    this.nonExistent = options.nonExistent || [];
+    this.isListForm = options.isListForm;
+    this.requireConfig = options.config || options.requireConfig;
+    this.webpackConfig = options.webpackConfig;
+    this.nodeModulesConfig = options.nodeModulesConfig;
+    this.detectiveConfig = options.detective || options.detectiveConfig || {};
+
+    this.filter = options.filter;
+
+    if (!this.filename) { throw new Error('filename not given'); }
+    if (!this.directory) { throw new Error('directory not given'); }
+    if (this.filter && typeof this.filter !== 'function') { throw new Error('filter must be a function'); }
+
+    debug('given filename: ' + this.filename);
+
+    this.filename = path.resolve(process.cwd(), this.filename);
+
+    debug('resolved filename: ' + this.filename);
+    debug('visited: ', this.visited);
+  }
+
+  clone () {
+    return new Config(this);
+  }
 }
 
-Config.prototype.clone = function() {
-  return new Config(this);
-};
-
 module.exports = Config;