prettier: add other supported filetypes (html, css, etc). (google#110)

Also let js-beautify take precedence over prettier so that the behavior stays the same when users update the plugin.

Author: infokiller

autoload/codefmt/prettier.vim

@@ -15,6 +15,10 @@
 
 let s:plugin = maktaba#plugin#Get('codefmt')
 
+" See https://prettier.io for a list of supported file types.
+let s:supported_filetypes = ['javascript', 'markdown', 'html', 'css', 'yaml', 
+      \ 'jsx', 'less', 'scss', 'mdx']
+
 
 ""
 " @private
@@ -30,7 +34,7 @@ function! codefmt#prettier#GetFormatter() abort
   endfunction
 
   function l:formatter.AppliesToBuffer() abort
-    return &filetype is# 'javascript'
+    return index(s:supported_filetypes, &filetype) >= 0
   endfunction
 
   ""

plugin/register.vim

@@ -23,8 +23,8 @@ call s:registry.SetValidator('codefmt#EnsureFormatter')
 
 " Formatters that are registered later are given more priority when deciding
 " what the default formatter will be for a particular file type.
-call s:registry.AddExtension(codefmt#jsbeautify#GetFormatter())
 call s:registry.AddExtension(codefmt#prettier#GetFormatter())
+call s:registry.AddExtension(codefmt#jsbeautify#GetFormatter())
 call s:registry.AddExtension(codefmt#clangformat#GetFormatter())
 call s:registry.AddExtension(codefmt#gofmt#GetFormatter())
 call s:registry.AddExtension(codefmt#dartfmt#GetFormatter())