fix(biome): send correct language to lsp proxy (#4773)

Since Biome understands `typescriptreact` and `javascriptreact` as
languages, we can send the `filetype` to the LSP, rather than only
sending `typescript` for both `ts` and `tsx` files, or `javascript` for
`js` and `jsx` files.

fixes: #4752

ale_linters/javascript/biome.vim

@@ -4,6 +4,7 @@
 call ale#linter#Define('javascript', {
 \   'name': 'biome',
 \   'lsp': 'stdio',
+\   'language': function('ale#handlers#biome#GetLanguage'),
 \   'executable': function('ale#handlers#biome#GetExecutable'),
 \   'command': function('ale#handlers#biome#GetCommand'),
 \   'project_root': function('ale#handlers#biome#GetProjectRoot'),

ale_linters/typescript/biome.vim

@@ -4,6 +4,7 @@
 call ale#linter#Define('typescript', {
 \   'name': 'biome',
 \   'lsp': 'stdio',
+\   'language': function('ale#handlers#biome#GetLanguage'),
 \   'executable': function('ale#handlers#biome#GetExecutable'),
 \   'command': function('ale#handlers#biome#GetCommand'),
 \   'project_root': function('ale#handlers#biome#GetProjectRoot'),

autoload/ale/handlers/biome.vim

@@ -25,6 +25,10 @@ function! ale#handlers#biome#GetCommand(buffer) abort
     \   . (!empty(l:options) ? ' ' . l:options : '')
 endfunction
 
+function! ale#handlers#biome#GetLanguage(buffer) abort
+    return getbufvar(a:buffer, '&filetype')
+endfunction
+
 function! ale#handlers#biome#GetProjectRoot(buffer) abort
     let l:biome_file = ale#path#FindNearestFile(a:buffer, 'biome.json')
 

test/linter/test_typescript_biome.vader → test/linter/test_biome.vader

@@ -16,3 +16,20 @@ Execute(The biome command should accept options):
   let g:ale_biome_options = '--foobar'
 
   AssertLinter 'biome', ale#Escape('biome') . ' lsp-proxy --foobar'
+
+Execute(Uses the filetype as the language):
+  call ale#test#SetFilename('test.ts')
+  set filetype=typescript
+  AssertLSPLanguage 'typescript'
+
+  call ale#test#SetFilename('test.tsx')
+  set filetype=typescriptreact
+  AssertLSPLanguage 'typescriptreact'
+
+  call ale#test#SetFilename('test.js')
+  set filetype=javascript
+  AssertLSPLanguage 'javascript'
+
+  call ale#test#SetFilename('test.jsx')
+  set filetype=javascriptreact
+  AssertLSPLanguage 'javascriptreact'