checks the current scope at cursor instead of beginning of file

tern.py

@@ -8,7 +8,7 @@
 is_st2 = int(sublime.version()) < 3000
 
 def is_js_file(view):
-  return view.score_selector(0, "source.js") > 0
+  return view.score_selector(view.sel()[0].b, "source.js") > 0
 
 files = {}
 arghints_enabled = False