treat all files objects the same

src/app/files/basicReadOnlyExplorer.js

@@ -83,6 +83,7 @@ class BasicReadOnlyExplorer {
   resolveDirectory (path, callback /* (error, filesList) => { } */) {
     var self = this
     if (path[0] === '/') path = path.substring(1)
+    if (!path) return callback(null, { [self.type]: { } })
     var tree = {}
     // This does not include '.remix.config', because it is filtered
     // inside list().

src/app/files/file-explorer.js

@@ -101,8 +101,7 @@ function fileExplorer (appAPI, files) {
       }
     },
     formatSelf: function formatSelf (key, data, li) {
-      var isRoot = !data.path.indexOf('browser') && data.path.length === 'browser'.length
+      var isRoot = data.path.indexOf('/') === -1
-      isRoot = isRoot || !data.path.indexOf('localhost') && data.path.length === 'localhost'.length
       return yo`<label class="${data.children ? css.folder : css.file}"
         data-path="${data.path}"
         style="${isRoot ? 'font-weight:bold;' : ''}"