Update

after/ftplugin/javascript.vim

@@ -1,3 +1,12 @@
+if !exists('g:polyglot_disabled') || (index(g:polyglot_disabled, 'javascript') == -1 && index(g:polyglot_disabled, 'jsx') == -1)
+
+if get(g:, 'vim_jsx_pretty_disable_js', 0)
+  finish
+endif
+
+source <sfile>:h/jsx.vim
+
+endif
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'javascript') == -1
 
 " Vim filetype plugin file
@@ -14,38 +23,3 @@ else
 endif
 
 endif
-if !exists('g:polyglot_disabled') || (index(g:polyglot_disabled, 'javascript') == -1 && index(g:polyglot_disabled, 'jsx') == -1)
-
-"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-" Vim ftplugin file
-"
-" Language: javascript.jsx
-" Maintainer: MaxMEllon <maxmellon1994@gmail.com>
-"
-"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-
-" modified from html.vim
-" For matchit plugin
-if exists("loaded_matchit")
-  let b:match_ignorecase = 0
-  let b:match_words = '(:),\[:\],{:},<:>,' .
-        \ '<\@<=\([^/][^ \t>]*\)[^>]*\%(>\|$\):<\@<=/\1>'
-endif
-
-" For andymass/vim-matchup plugin
-if exists("loaded_matchup")
-  setlocal matchpairs=(:),{:},[:],<:>
-  let b:match_words = '<\@<=\([^/][^ \t>]*\)\g{hlend}[^>]*\%(/\@<!>\|$\):<\@<=/\1>'
-  let b:match_skip = 's:comment\|string'
-endif
-
-let b:jsx_pretty_old_cms = &l:commentstring
-
-augroup jsx_comment
-  autocmd! CursorMoved <buffer>
-  autocmd CursorMoved <buffer> call jsx_pretty#comment#update_commentstring(b:jsx_pretty_old_cms)
-augroup end
-
-setlocal suffixesadd+=.jsx
-
-endif