make switching index.js component.js into vimscript

vim/plugin/ciswitch.vim

@@ -1,28 +0,0 @@
-if !has('ruby')
-      echo "Error: Required vim compiled with +ruby"
-      finish
-endif
-
-if exists('g:loaded_ruby_fix_plugin')
-      finish
-endif
-let g:loaded_ruby_fix_plugin = 1
-
-command! -nargs=0 L call Switch()
-
-function! Switch()
-ruby<<EOF
-buf = VIM::Buffer.current
-route = buf.name
-if (route.end_with? "component.js") || (route.end_with? "index.js")
-  target = route.include?("component.js") ? route.sub("component.js", "index.js") : route.sub("index.js", "component.js")
-  if FileTest::exist?(target)
-    Vim::command("e #{target}")
-  else
-    print "Target file does not exist!"
-  end
-else
-  print "The current file is incorrect!"
-end
-EOF
-endfunctio

vim/settings/js.vim

@@ -2,3 +2,14 @@ let javascript_enable_domhtmlcss = 0
 let javascript_ignore_javaScriptdoc = 0
 let g:javascript_conceal=0
 let b:javascript_fold=1
+
+function! IndexComponentSwitch()
+  let b:filename=expand('%')
+  if b:filename =~ 'index\.js$'
+    execute 'edit' substitute(b:filename, "index.js", "component.js", "")
+  else
+    execute 'edit' substitute(b:filename, "component.js", "index.js", "")
+  endif
+endfunction
+
+au FileType javascript nmap <leader>s :call IndexComponentSwitch()<cr>