Stylelint checker: cleanup.

autoload/syntastic/preprocess.vim

@@ -214,6 +214,42 @@ function! syntastic#preprocess#rparse(errors) abort " {{{2
     return out
 endfunction " }}}2
 
+function! syntastic#preprocess#stylelint(errors) abort " {{{2
+    let out = []
+
+    " CssSyntaxError: /path/to/file.css:2:11: Missed semicolon
+    let parts = matchlist(a:errors[0], '\v^CssSyntaxError: (.{-1,}):(\d+):(\d+): (.+)')
+    if len(parts) > 4
+        call add(out, 'E:' . join(parts[1:4], ':'))
+    else
+        let errs = s:_decode_JSON(join(a:errors, ''))
+
+        let out = []
+        if type(errs) == type([]) && len(errs) == 1 && type(errs[0]) == type({}) &&
+            \ has_key(errs[0], 'source') && has_key(errs[0], 'warnings') && type(errs[0]['warnings']) == type([])
+
+            for e in errs[0]['warnings']
+                try
+                    let msg =
+                        \ ['W', 'E'][e['severity']-1] . ':' .
+                        \ errs[0]['source'] . ':' .
+                        \ e['line'] . ':' .
+                        \ e['column'] . ':' .
+                        \ e['text']
+                    call add(out, msg)
+                catch /\m^Vim\%((\a\+)\)\=:E716/
+                    call syntastic#log#warn('checker javascript/flow: unrecognized error format')
+                    let out = []
+                    break
+                endtry
+            endfor
+        else
+            call syntastic#log#warn('checker javascript/stylelint: unrecognized error format')
+        endif
+    endif
+    return out
+endfunction " }}}2
+
 function! syntastic#preprocess#tslint(errors) abort " {{{2
     return map(copy(a:errors), 'substitute(v:val, ''\m^\(([^)]\+)\)\s\(.\+\)$'', ''\2 \1'', "")')
 endfunction " }}}2

plugin/syntastic.vim

@@ -19,7 +19,7 @@ if has('reltime')
     lockvar! g:_SYNTASTIC_START
 endif
 
-let g:_SYNTASTIC_VERSION = '3.7.0-17'
+let g:_SYNTASTIC_VERSION = '3.7.0-20'
 lockvar g:_SYNTASTIC_VERSION
 
 " Sanity checks {{{1

syntax_checkers/css/stylelint.vim

@@ -20,19 +20,16 @@ let s:save_cpo = &cpo
 set cpo&vim
 
 function! SyntaxCheckers_css_stylelint_GetLocList() dict
-    let makeprg = self.makeprgBuild({ })
-    " Example output:
-    " CssSyntaxError: /path/to/file.css:2:11: Missed semicolon
-    " or
-    " 2:11    Expected single space after ":" (declaration-colon-space-after)
-    let errorformat = 
-          \ 'CssSyntaxError: %f:%l:%c: %m,' .
-          \ '%\m%l\:%c%\s%#%m,'
+    let makeprg = self.makeprgBuild({ 'args_after': '-f json' })
+
+    let errorformat = '%t:%f:%l:%c:%m'
 
     return SyntasticMake({
         \ 'makeprg': makeprg,
         \ 'errorformat': errorformat,
-        \ 'defaults': {'bufnr': bufnr('')} })
+        \ 'subtype': 'Style',
+        \ 'preprocess': 'stylelint',
+        \ 'returns': [0, 1, 2] })
 endfunction
 
 call g:SyntasticRegistry.CreateAndRegisterChecker({