add check for imported file

src/app/files/fileManager.js

@@ -4,6 +4,7 @@ var $ = require('jquery')
 var remixLib = require('remix-lib')
 var yo = require('yo-yo')
 var EventManager = remixLib.EventManager
+var imports = require('../compiler/compiler-imports')
 
 /*
   attach to files event (removed renamed)
@@ -145,8 +146,14 @@ class FileManager {
 
   fileProviderOf (file) {
     var provider = file.match(/[^/]*/)
-    if (provider !== null) {
+    if (provider !== null && this.opt.filesProviders[provider[0]]) {
       return this.opt.filesProviders[provider[0]]
+    } else {
+      for (var handler of imports.handlers()) {
+        if (handler.match.exec(file)) {
+          return this.opt.filesProviders[handler.type]
+        }
+      }
     }
     return null
   }