From 05ce86ea33d882af998d1da3b2dcafb3d8a16465 Mon Sep 17 00:00:00 2001
From: Pavel Pertsev <morhetz@gmail.com>
Date: Fri, 18 Aug 2017 13:37:08 +0300
Subject: [PATCH] Add prettier-eslint legacy option

---
 autoload/ale/fixers/prettier_eslint.vim |  8 +++++++-
 doc/ale-javascript.txt                  | 13 +++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/autoload/ale/fixers/prettier_eslint.vim b/autoload/ale/fixers/prettier_eslint.vim
index e0d0cf7..6fe9f0b 100644
--- a/autoload/ale/fixers/prettier_eslint.vim
+++ b/autoload/ale/fixers/prettier_eslint.vim
@@ -24,6 +24,7 @@ endfunction
 call ale#Set('javascript_prettier_eslint_executable', 'prettier-eslint')
 call ale#Set('javascript_prettier_eslint_use_global', 0)
 call ale#Set('javascript_prettier_eslint_options', '')
+call ale#Set('javascript_prettier_eslint_legacy', 0)
 
 function! ale#fixers#prettier_eslint#GetExecutable(buffer) abort
     return ale#node#FindExecutable(a:buffer, 'javascript_prettier_eslint', [
@@ -37,10 +38,15 @@ function! ale#fixers#prettier_eslint#Fix(buffer, lines) abort
     let l:executable = ale#fixers#prettier_eslint#GetExecutable(a:buffer)
     let l:config = s:FindConfig(a:buffer)
 
+    let l:eslint_config_option = ' --eslint-config-path ' . ale#Escape(l:config)
+    if ale#Var(a:buffer, 'javascript_prettier_eslint_legacy')
+      let l:eslint_config_option = ''
+    endif
+
     return {
     \   'command': ale#Escape(l:executable)
     \       . ' %t'
-    \       . ' --eslint-config-path ' . ale#Escape(l:config)
+    \       . l:eslint_config_option
     \       . ' ' . l:options
     \       . ' --write',
     \   'read_temporary_file': 1,
diff --git a/doc/ale-javascript.txt b/doc/ale-javascript.txt
index 806c7f8..3dd9d27 100644
--- a/doc/ale-javascript.txt
+++ b/doc/ale-javascript.txt
@@ -96,6 +96,11 @@ g:ale_javascript_prettier_use_local_config     *g:ale_javascript_prettier_use_lo
 ===============================================================================
 prettier-eslint                                *ale-javascript-prettier-eslint*
 
+ALE supports `prettier-eslint` >= 4.2.0. Using lower version is not recommended
+because it cannot be configured to use the ESLint configuration file for input
+given via stdin. However ALE could be set up on your own risk with older
+versions with |g:ale_javascript_prettier_eslint_legacy|
+
 g:ale_javascript_prettier_eslint_executable
                                   *g:ale_javascript_prettier_eslint_executable*
                                   *b:ale_javascript_prettier_eslint_executable*
@@ -122,6 +127,14 @@ g:ale_javascript_prettier_eslint_use_global
 
   See |ale-integrations-local-executables|
 
+g:ale_javascript_prettier_eslint_legacy
+                                  *g:ale_javascript_prettier_eslint_legacy*
+                                  *b:ale_javascript_prettier_eslint_legacy*
+  Type: |Number|
+  Default: `0`
+
+  Fallback option for `prettier-eslint` < 4.2.0
+
 
 ===============================================================================
 prettier-standard                            *ale-javascript-prettier-standard*