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-rw-r--r--autoload/ale/fixers/eslint.vim17
-rw-r--r--autoload/ale/util.vim9
-rw-r--r--test/fixers/test_eslint_fixer_callback.vader36
-rw-r--r--test/test_fuzzy_json_decode.vader8
4 files changed, 69 insertions, 1 deletions
diff --git a/autoload/ale/fixers/eslint.vim b/autoload/ale/fixers/eslint.vim
index d30f1ba6..76615fb5 100644
--- a/autoload/ale/fixers/eslint.vim
+++ b/autoload/ale/fixers/eslint.vim
@@ -14,6 +14,14 @@ function! ale#fixers#eslint#Fix(buffer) abort
\}
endfunction
+function! ale#fixers#eslint#ProcessFixDryRunOutput(buffer, output) abort
+ for l:item in ale#util#FuzzyJSONDecode(a:output, [])
+ return split(get(l:item, 'output', ''), "\n")
+ endfor
+
+ return []
+endfunction
+
function! ale#fixers#eslint#ApplyFixForVersion(buffer, version_output) abort
let l:executable = ale#handlers#eslint#GetExecutable(a:buffer)
let l:version = ale#semver#GetVersion(l:executable, a:version_output)
@@ -32,6 +40,15 @@ function! ale#fixers#eslint#ApplyFixForVersion(buffer, version_output) abort
\}
endif
+ " 4.9.0 is the first version with --fix-dry-run
+ if ale#semver#GTE(l:version, [4, 9, 0])
+ return {
+ \ 'command': ale#node#Executable(a:buffer, l:executable)
+ \ . ' --stdin-filename %s --stdin --fix-dry-run --format=json',
+ \ 'process_with': 'ale#fixers#eslint#ProcessFixDryRunOutput',
+ \}
+ endif
+
return {
\ 'command': ale#node#Executable(a:buffer, l:executable)
\ . ' -c ' . ale#Escape(l:config)
diff --git a/autoload/ale/util.vim b/autoload/ale/util.vim
index cf8d5bec..1f590adc 100644
--- a/autoload/ale/util.vim
+++ b/autoload/ale/util.vim
@@ -250,7 +250,14 @@ function! ale#util#FuzzyJSONDecode(data, default) abort
let l:str = type(a:data) == type('') ? a:data : join(a:data, '')
try
- return json_decode(l:str)
+ let l:result = json_decode(l:str)
+
+ " Vim 8 only uses the value v:none for decoding blank strings.
+ if !has('nvim') && l:result is v:none
+ return a:default
+ endif
+
+ return l:result
catch /E474/
return a:default
endtry
diff --git a/test/fixers/test_eslint_fixer_callback.vader b/test/fixers/test_eslint_fixer_callback.vader
index 8a5eaa4e..afb267a2 100644
--- a/test/fixers/test_eslint_fixer_callback.vader
+++ b/test/fixers/test_eslint_fixer_callback.vader
@@ -69,6 +69,18 @@ Execute(The version check should be correct):
\ },
\ ale#fixers#eslint#Fix(bufnr(''))
+Execute(--fix-dry-run should be used for 4.9.0 and up):
+ call ale#test#SetFilename('../eslint-test-files/react-app/subdir/testfile.js')
+
+ AssertEqual
+ \ {
+ \ 'command': (has('win32') ? 'node.exe ' : '')
+ \ . ale#Escape(ale#path#Winify(g:dir . '/../eslint-test-files/react-app/node_modules/eslint/bin/eslint.js'))
+ \ . ' --stdin-filename %s --stdin --fix-dry-run --format=json',
+ \ 'process_with': 'ale#fixers#eslint#ProcessFixDryRunOutput',
+ \ },
+ \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), ['4.9.0'])
+
Execute(--fix-to-stdout should be used for eslint_d):
call ale#test#SetFilename('../eslint-test-files/app-with-eslint-d/testfile.js')
@@ -114,3 +126,27 @@ Execute(The version number should be cached):
\ 'command': '',
\ },
\ ale#fixers#eslint#Fix(bufnr(''))
+
+ " Call it again without the version output. We should use the newer command.
+ AssertEqual
+ \ {
+ \ 'command': (has('win32') ? 'node.exe ' : '')
+ \ . ale#Escape(ale#path#Winify(g:dir . '/../eslint-test-files/react-app/node_modules/eslint/bin/eslint.js'))
+ \ . ' --stdin-filename %s --stdin --fix-dry-run --format=json',
+ \ 'process_with': 'ale#fixers#eslint#ProcessFixDryRunOutput',
+ \ },
+ \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), [])
+
+Execute(The --fix-dry-run post-processor should handle JSON output correctly):
+ AssertEqual
+ \ [],
+ \ ale#fixers#eslint#ProcessFixDryRunOutput(bufnr(''), [])
+ AssertEqual
+ \ [],
+ \ ale#fixers#eslint#ProcessFixDryRunOutput(bufnr(''), [''])
+ AssertEqual
+ \ [],
+ \ ale#fixers#eslint#ProcessFixDryRunOutput(bufnr(''), ['[{}]'])
+ AssertEqual
+ \ ['foo', 'bar'],
+ \ ale#fixers#eslint#ProcessFixDryRunOutput(bufnr(''), ['[{"output": "foo\nbar"}]'])
diff --git a/test/test_fuzzy_json_decode.vader b/test/test_fuzzy_json_decode.vader
index 4ac0ca1b..4b1c6088 100644
--- a/test/test_fuzzy_json_decode.vader
+++ b/test/test_fuzzy_json_decode.vader
@@ -6,6 +6,14 @@ Execute(FuzzyJSONDecode should return the default for empty Strings):
AssertEqual [], ale#util#FuzzyJSONDecode('', [])
AssertEqual {}, ale#util#FuzzyJSONDecode('', {})
+Execute(FuzzyJSONDecode should return the default value for ['']):
+ AssertEqual [], ale#util#FuzzyJSONDecode([''], [])
+ AssertEqual {}, ale#util#FuzzyJSONDecode([''], {})
+
+Execute(FuzzyJSONDecode should return the default value for only whitespace lines):
+ AssertEqual [], ale#util#FuzzyJSONDecode(['', "\n"], [])
+ AssertEqual {}, ale#util#FuzzyJSONDecode(['', "\n"], {})
+
Execute(FuzzyJSONDecode should return the default for Lists with invalid JSON):
AssertEqual [], ale#util#FuzzyJSONDecode(['x'], [])
AssertEqual {}, ale#util#FuzzyJSONDecode(['x'], {})