Add standard linter

ale_linters/javascript/standard.vim

@@ -0,0 +1,71 @@
+" Author: Ahmed El Gabri <@ahmedelgabri>
+" Description: standardjs for JavaScript files
+
+let g:ale_javascript_standard_executable =
+\   get(g:, 'ale_javascript_standard_executable', 'standard')
+
+let g:ale_javascript_standard_options =
+\   get(g:, 'ale_javascript_standard_options', '')
+
+let g:ale_javascript_standard_use_global =
+\   get(g:, 'ale_javascript_standard_use_global', 0)
+
+function! ale_linters#javascript#standard#GetExecutable(buffer) abort
+    if g:ale_javascript_standard_use_global
+        return g:ale_javascript_standard_executable
+    endif
+
+    return ale#util#ResolveLocalPath(
+    \   a:buffer,
+    \   'node_modules/.bin/standard',
+    \   g:ale_javascript_standard_executable
+    \)
+endfunction
+
+function! ale_linters#javascript#standard#GetCommand(buffer) abort
+    return ale_linters#javascript#standard#GetExecutable(a:buffer)
+    \   . ' ' . g:ale_javascript_standard_options
+    \   . ' --stdin %s'
+endfunction
+
+function! ale_linters#javascript#standard#Handle(buffer, lines) abort
+    " Matches patterns line the following:
+    "
+    " /path/to/some-filename.js:47:14: Strings must use singlequote.
+    " /path/to/some-filename.js:56:41: Expected indentation of 2 spaces but found 4.
+    " /path/to/some-filename.js:13:3: Parsing error: Unexpected token
+    let l:pattern = '^.*:\(\d\+\):\(\d\+\): \(.\+\)$'
+    let l:output = []
+
+    for l:line in a:lines
+        let l:match = matchlist(l:line, l:pattern)
+
+        if len(l:match) == 0
+            continue
+        endif
+
+        let l:type = 'Error'
+        let l:text = l:match[3]
+
+        " vcol is Needed to indicate that the column is a character.
+        call add(l:output, {
+        \   'bufnr': a:buffer,
+        \   'lnum': l:match[1] + 0,
+        \   'vcol': 0,
+        \   'col': l:match[2] + 0,
+        \   'text': l:text,
+        \   'type': 'E',
+        \   'nr': -1,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('javascript', {
+\   'name': 'standard',
+\   'executable_callback': 'ale_linters#javascript#standard#GetExecutable',
+\   'command_callback': 'ale_linters#javascript#standard#GetCommand',
+\   'callback': 'ale_linters#javascript#standard#Handle',
+\})
+