2 files changed, 69 insertions, 12 deletions
diff --git a/autoload/ale/fixers/xo.vim b/autoload/ale/fixers/xo.vim
index 882350be..dcf4c737 100644
--- a/autoload/ale/fixers/xo.vim
+++ b/autoload/ale/fixers/xo.vim
@@ -1,23 +1,36 @@
 " Author: Albert Marquez - https://github.com/a-marquez
 " Description: Fixing files with XO.
 
-call ale#Set('javascript_xo_executable', 'xo')
-call ale#Set('javascript_xo_use_global', get(g:, 'ale_use_global_executables', 0))
-call ale#Set('javascript_xo_options', '')
+function! ale#fixers#xo#Fix(buffer) abort
+    let l:executable = ale#handlers#xo#GetExecutable(a:buffer)
+    let l:options = ale#handlers#xo#GetOptions(a:buffer)
 
-function! ale#fixers#xo#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'javascript_xo', [
-    \   'node_modules/xo/cli.js',
-    \   'node_modules/.bin/xo',
-    \])
+    return ale#semver#RunWithVersionCheck(
+    \   a:buffer,
+    \   l:executable,
+    \   '%e --version',
+    \   {b, v -> ale#fixers#xo#ApplyFixForVersion(b, v, l:executable, l:options)}
+    \)
 endfunction
 
-function! ale#fixers#xo#Fix(buffer) abort
-    let l:executable = ale#fixers#xo#GetExecutable(a:buffer)
+function! ale#fixers#xo#ApplyFixForVersion(buffer, version, executable, options) abort
+    let l:executable = ale#node#Executable(a:buffer, a:executable)
+    let l:options = ale#Pad(a:options)
+
+    " 0.30.0 is the first version with a working --stdin --fix
+    if ale#semver#GTE(a:version, [0, 30, 0])
+        return {
+        \   'command': l:executable
+        \       . ' --stdin --stdin-filename %s'
+        \       . ' --fix'
+        \       . l:options,
+        \}
+    endif
 
     return {
-    \   'command': ale#node#Executable(a:buffer, l:executable)
-    \       . ' --fix %t',
+    \   'command': l:executable
+    \       . ' --fix %t'
+    \       . l:options,
     \   'read_temporary_file': 1,
     \}
 endfunction
diff --git a/autoload/ale/handlers/xo.vim b/autoload/ale/handlers/xo.vim
new file mode 100644
index 00000000..c63278c0
--- /dev/null
+++ b/autoload/ale/handlers/xo.vim
@@ -0,0 +1,44 @@
+call ale#Set('javascript_xo_executable', 'xo')
+call ale#Set('javascript_xo_use_global', get(g:, 'ale_use_global_executables', 0))
+call ale#Set('javascript_xo_options', '')
+
+call ale#Set('typescript_xo_executable', 'xo')
+call ale#Set('typescript_xo_use_global', get(g:, 'ale_use_global_executables', 0))
+call ale#Set('typescript_xo_options', '')
+
+function! ale#handlers#xo#GetExecutable(buffer) abort
+    let l:type = ale#handlers#xo#GetType(a:buffer)
+
+    return ale#node#FindExecutable(a:buffer, l:type . '_xo', [
+    \   'node_modules/xo/cli.js',
+    \   'node_modules/.bin/xo',
+    \])
+endfunction
+
+function! ale#handlers#xo#GetLintCommand(buffer) abort
+    return ale#Escape(ale#handlers#xo#GetExecutable(a:buffer))
+    \   . ale#Pad(ale#handlers#xo#GetOptions(a:buffer))
+    \   . ' --reporter json --stdin --stdin-filename %s'
+endfunction
+
+function! ale#handlers#xo#GetOptions(buffer) abort
+    let l:type = ale#handlers#xo#GetType(a:buffer)
+
+    return ale#Var(a:buffer, l:type . '_xo_options')
+endfunction
+
+" xo uses eslint and the output format is the same
+function! ale#handlers#xo#HandleJSON(buffer, lines) abort
+    return ale#handlers#eslint#HandleJSON(a:buffer, a:lines)
+endfunction
+
+function! ale#handlers#xo#GetType(buffer) abort
+    let l:filetype = getbufvar(a:buffer, '&filetype')
+    let l:type = 'javascript'
+
+    if l:filetype =~# 'typescript'
+        let l:type = 'typescript'
+    endif
+
+    return l:type
+endfunction