Add dprint fixer

autoload/ale/fix/registry.vim

@@ -491,6 +491,11 @@ let s:default_registry = {
 \       'suggested_filetypes': ['lua'],
 \       'description': 'Fix Lua files with luafmt.',
 \   },
+\   'dprint': {
+\       'function': 'ale#fixers#dprint#Fix',
+\       'suggested_filetypes': ['javascript', 'typescript', 'json', 'markdown'],
+\       'description': 'Pluggable and configurable code formatting platform',
+\   },
 \   'stylua': {
 \       'function': 'ale#fixers#stylua#Fix',
 \       'suggested_filetypes': ['lua'],

autoload/ale/fixers/dprint.vim

@@ -0,0 +1,24 @@
+call ale#Set('dprint_executable', 'dprint')
+call ale#Set('dprint_options', '')
+call ale#Set('dprint_config', 'dprint.json')
+
+function! ale#fixers#dprint#Fix(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'dprint_executable')
+
+    if !executable(l:executable)
+        return 0
+    endif
+
+    let l:options = ale#Var(a:buffer, 'dprint_options')
+    let l:config = ale#path#FindNearestFile(a:buffer, ale#Var(a:buffer, 'dprint_config'))
+
+    if !empty(l:config)
+        let l:options = l:options . ' -c ' . ale#Escape(l:config)
+    endif
+
+    let l:options = l:options . ' --stdin %s'
+
+    return {
+    \   'command': ale#Escape(l:executable) . ' fmt ' . l:options,
+    \}
+endfunction

doc/ale-supported-languages-and-tools.txt

@@ -267,6 +267,7 @@ Notes:
 * JavaScript
   * `cspell`
   * `deno`
+  * `dprint`
   * `eslint`
   * `fecs`
   * `flow`
@@ -586,6 +587,7 @@ Notes:
 * TypeScript
   * `cspell`
   * `deno`
+  * `dprint`
   * `eslint`
   * `fecs`
   * `prettier`

supported-tools.md

@@ -276,6 +276,7 @@ formatting.
 * JavaScript
   * [cspell](https://github.com/streetsidesoftware/cspell/tree/main/packages/cspell)
   * [deno](https://deno.land/)
+  * [dprint](https://dprint.dev/)
   * [eslint](http://eslint.org/)
   * [fecs](http://fecs.baidu.com/)
   * [flow](https://flowtype.org/)
@@ -595,6 +596,7 @@ formatting.
 * TypeScript
   * [cspell](https://github.com/streetsidesoftware/cspell/tree/main/packages/cspell)
   * [deno](https://deno.land/)
+  * [dprint](https://dprint.dev/)
   * [eslint](http://eslint.org/)
   * [fecs](http://fecs.baidu.com/)
   * [prettier](https://github.com/prettier/prettier)

test/fixers/test_dprint_fixer_callback.vader

@@ -0,0 +1,28 @@
+Before:
+  call ale#assert#SetUpFixerTest('typescript', 'dprint')
+
+After:
+  Restore
+  call ale#assert#TearDownFixerTest()
+
+Execute(The dprint callback should return the correct default values):
+  AssertFixer
+  \ {
+  \   'read_temporary_file': 1,
+  \   'command':
+  \     ale#Escape('dprint')
+  \     . ' ' . ale#Escape('')
+  \     . ' %t',
+  \ }
+
+Execute(The dprint callback should include custom options):
+  let g:ale_typescript_dprint_options = '-c dprint.json'
+
+  AssertFixer
+  \ {
+  \   'read_temporary_file': 1,
+  \   'command':
+  \     ale#Escape('dprint')
+  \     . ' ' . ale#Escape('-c dprint.json')
+  \     . ' %t',
+  \ }