don't try to read missing .babelrc file

Conditional to proceed or not after seeking .babelrc was not
couched in else, and therefore was both resolve(babel)ing as well
as going and trying to read the non-existent file.

Don't try to read the non-existent file.

Closes #742

Author: Daphne Maddox

dist/main/lang/modules/building.js

@@ -106,7 +106,7 @@ function getBabelInstance(projectDirectory) {
         return new Promise(function (resolve) {
             findup(projectDirectory, '.babelrc', function (err, dir) {
                 if (err)
-                    resolve(babel);
+                    return resolve(babel);
                 fs.readFile(path.join(dir, '.babelrc'), function (err, data) {
                     try {
                         babelConfigs[projectDirectory] = JSON.parse(data.toString());

lib/main/lang/modules/building.ts

@@ -131,7 +131,7 @@ function getBabelInstance(projectDirectory: string) {
     }).then(babel => {
         return new Promise<any>(resolve => {
             findup(projectDirectory, '.babelrc', function(err: any, dir) {
-                if (err) resolve(babel);
+                if (err) return resolve(babel);
 
                 fs.readFile(path.join(dir, '.babelrc'), function(err, data) {
                     try {