fix dir issue with empty project

Author: ShMcK

lib/modules/dir/index.js

@@ -1,11 +1,9 @@
 "use strict";
 function dirReducer(dir) {
-    if (!atom) {
-        throw new Error('No project directory found. Atom may not be initialized.');
-    }
     if (atom && atom.project.rootDirectories.length > 0) {
         return atom.project.rootDirectories[0].path;
     }
+    return '';
 }
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.default = dirReducer;

src/modules/dir/index.ts

@@ -5,11 +5,9 @@
  */
 export default function dirReducer(
   dir: string
-): string|void {
-  if (!atom) {
-    throw new Error('No project directory found. Atom may not be initialized.');
-  }
+): string {
   if (atom && atom.project.rootDirectories.length > 0) {
     return atom.project.rootDirectories[0].path;
   }
+  return '';
 }