Use the same function for finding the ESLint config for eslint --fix and prettier-eslint

autoload/ale/fixers/eslint.vim

@@ -1,29 +1,9 @@
 " Author: w0rp <devw0rp@gmail.com>
 " Description: Fixing files with eslint.
 
-function! s:FindConfig(buffer) abort
-    for l:path in ale#path#Upwards(expand('#' . a:buffer . ':p:h'))
-        for l:basename in [
-        \   '.eslintrc.js',
-        \   '.eslintrc.yaml',
-        \   '.eslintrc.yml',
-        \   '.eslintrc.json',
-        \   '.eslintrc',
-        \]
-            let l:config = ale#path#Simplify(l:path . '/' . l:basename)
-
-            if filereadable(l:config)
-                return l:config
-            endif
-        endfor
-    endfor
-
-    return ale#path#FindNearestFile(a:buffer, 'package.json')
-endfunction
-
 function! ale#fixers#eslint#Fix(buffer) abort
     let l:executable = ale#handlers#eslint#GetExecutable(a:buffer)
-    let l:config = s:FindConfig(a:buffer)
+    let l:config = ale#handlers#eslint#FindConfig(a:buffer)
 
     if empty(l:config)
         return 0

autoload/ale/fixers/prettier_eslint.vim

@@ -11,25 +11,6 @@ endfunction
 
 call ale#fixers#prettier_eslint#SetOptionDefaults()
 
-function! s:FindConfig(buffer) abort
-    for l:filename in [
-    \   '.eslintrc.js',
-    \   '.eslintrc.yaml',
-    \   '.eslintrc.yml',
-    \   '.eslintrc.json',
-    \   '.eslintrc',
-    \   'package.json',
-    \]
-        let l:config = ale#path#FindNearestFile(a:buffer, l:filename)
-
-        if !empty(l:config)
-            return l:config
-        endif
-    endfor
-
-    return ''
-endfunction
-
 function! ale#fixers#prettier_eslint#GetExecutable(buffer) abort
     return ale#node#FindExecutable(a:buffer, 'javascript_prettier_eslint', [
     \   'node_modules/prettier-eslint-cli/dist/index.js',
@@ -42,7 +23,7 @@ function! ale#fixers#prettier_eslint#Fix(buffer) abort
     let l:executable = ale#fixers#prettier_eslint#GetExecutable(a:buffer)
 
     let l:config = !ale#Var(a:buffer, 'javascript_prettier_eslint_legacy')
-    \   ? s:FindConfig(a:buffer)
+    \   ? ale#handlers#eslint#FindConfig(a:buffer)
     \   : ''
     let l:eslint_config_option = !empty(l:config)
     \   ? ' --eslint-config-path ' . ale#Escape(l:config)

autoload/ale/handlers/eslint.vim

@@ -6,6 +6,26 @@ call ale#Set('javascript_eslint_executable', 'eslint')
 call ale#Set('javascript_eslint_use_global', 0)
 call ale#Set('javascript_eslint_suppress_eslintignore', 0)
 
+function! ale#handlers#eslint#FindConfig(buffer) abort
+    for l:path in ale#path#Upwards(expand('#' . a:buffer . ':p:h'))
+        for l:basename in [
+        \   '.eslintrc.js',
+        \   '.eslintrc.yaml',
+        \   '.eslintrc.yml',
+        \   '.eslintrc.json',
+        \   '.eslintrc',
+        \]
+            let l:config = ale#path#Simplify(l:path . '/' . l:basename)
+
+            if filereadable(l:config)
+                return l:config
+            endif
+        endfor
+    endfor
+
+    return ale#path#FindNearestFile(a:buffer, 'package.json')
+endfunction
+
 function! ale#handlers#eslint#GetExecutable(buffer) abort
     return ale#node#FindExecutable(a:buffer, 'javascript_eslint', [
     \   'node_modules/.bin/eslint_d',