Fixed linting error

apps/remix-ide/src/app/files/file-explorer.js

@@ -104,7 +104,7 @@ function fileExplorer (localRegistry, files, menuItems) {
     self.ensureRoot(() => {
       const folderpath = filepath.split('/').slice(0, -1).join('/')
       const currentTree = self.treeView.nodeAt(folderpath)
-      
+
       if (currentTree && self.treeView.isExpanded(folderpath)) {
         self.files.resolveDirectory(folderpath, (error, fileTree) => {
           if (error) console.error(error)

apps/remix-ide/src/app/files/remixDProvider.js

@@ -70,10 +70,10 @@ module.exports = class RemixDProvider {
 
     return this._appManager.call('remixd', 'exists', { path: unprefixedpath })
     .then((result) => {
-      if(cb) return cb(null, result)
+      if (cb) return cb(null, result)
       return result
     }).catch((error) => {
-      if(cb) return cb(error)
+      if (cb) return cb(error)
       throw new Error(error)
     })
   }