ale/ale_linters/javascript/eslint.vim
Adriaan Zonnenberg 4b0f3257dd Remove 'col' from linters where it is hardcoded to 1 (#434)
* Remove 'col' from linters where it is hardcoded to 1

When 'col' is 1, the first column will get highlighted for no reason. It
should be 0 (which is the default).

In the scalac linter there was also a check about the outcome of
`stridx`. It would set l:col to 0 if it was -1, and then it uses
`'col': l:col + 1` to convert the outcome of `stridx` to the actual
column number. This will make 'col' equals 1 when there is no match. We
can remove the check because `-1 + 1 = 0`.

* Remove outdated comments about vcol

vcol was added as a default, and the loclists that follow these comments
do not contain 'vcol' anymore
2017-03-30 23:33:38 +01:00

108 lines
3.3 KiB
VimL

" Author: w0rp <devw0rp@gmail.com>
" Description: eslint for JavaScript files
let g:ale_javascript_eslint_executable =
\ get(g:, 'ale_javascript_eslint_executable', 'eslint')
let g:ale_javascript_eslint_options =
\ get(g:, 'ale_javascript_eslint_options', '')
let g:ale_javascript_eslint_use_global =
\ get(g:, 'ale_javascript_eslint_use_global', 0)
function! ale_linters#javascript#eslint#GetExecutable(buffer) abort
if g:ale_javascript_eslint_use_global
return g:ale_javascript_eslint_executable
endif
" Look for the kinds of paths that create-react-app generates first.
let l:executable = ale#util#ResolveLocalPath(
\ a:buffer,
\ 'node_modules/eslint/bin/eslint.js',
\ ''
\)
if !empty(l:executable)
return l:executable
endif
return ale#util#ResolveLocalPath(
\ a:buffer,
\ 'node_modules/.bin/eslint',
\ g:ale_javascript_eslint_executable
\)
endfunction
function! ale_linters#javascript#eslint#GetCommand(buffer) abort
return ale_linters#javascript#eslint#GetExecutable(a:buffer)
\ . ' ' . g:ale_javascript_eslint_options
\ . ' -f unix --stdin --stdin-filename %s'
endfunction
function! ale_linters#javascript#eslint#Handle(buffer, lines) abort
let l:config_error_pattern = '\v^ESLint couldn''t find a configuration file'
\ . '|^Cannot read config file'
" Look for a message in the first few lines which indicates that
" a configuration file couldn't be found.
for l:line in a:lines[:10]
if len(matchlist(l:line, l:config_error_pattern)) > 0
return [{
\ 'lnum': 1,
\ 'text': 'eslint configuration error (type :ALEDetail for more information)',
\ 'detail': join(a:lines, "\n"),
\}]
endif
endfor
" Matches patterns line the following:
"
" /path/to/some-filename.js:47:14: Missing trailing comma. [Warning/comma-dangle]
" /path/to/some-filename.js:56:41: Missing semicolon. [Error/semi]
let l:pattern = '^.*:\(\d\+\):\(\d\+\): \(.\+\) \[\(.\+\)\]$'
" This second pattern matches lines like the following:
"
" /path/to/some-filename.js:13:3: Parsing error: Unexpected token
let l:parsing_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
" Try the parsing pattern for parsing errors.
let l:match = matchlist(l:line, l:parsing_pattern)
endif
if len(l:match) == 0
continue
endif
let l:type = 'Error'
let l:text = l:match[3]
" Take the error type from the output if available.
if !empty(l:match[4])
let l:type = split(l:match[4], '/')[0]
let l:text .= ' [' . l:match[4] . ']'
endif
call add(l:output, {
\ 'bufnr': a:buffer,
\ 'lnum': l:match[1] + 0,
\ 'col': l:match[2] + 0,
\ 'text': l:text,
\ 'type': l:type ==# 'Warning' ? 'W' : 'E',
\})
endfor
return l:output
endfunction
call ale#linter#Define('javascript', {
\ 'name': 'eslint',
\ 'executable_callback': 'ale_linters#javascript#eslint#GetExecutable',
\ 'command_callback': 'ale_linters#javascript#eslint#GetCommand',
\ 'callback': 'ale_linters#javascript#eslint#Handle',
\})