diff --git a/ale_linters/javascript/eslint.vim b/ale_linters/javascript/eslint.vim
index 8aeac2d8..31fb413f 100644
--- a/ale_linters/javascript/eslint.vim
+++ b/ale_linters/javascript/eslint.vim
@@ -6,5 +6,5 @@ call ale#linter#Define('javascript', {
 \   'output_stream': 'both',
 \   'executable': function('ale#handlers#eslint#GetExecutable'),
 \   'command': function('ale#handlers#eslint#GetCommand'),
-\   'callback': 'ale#handlers#eslint#Handle',
+\   'callback': 'ale#handlers#eslint#HandleJSON',
 \})
diff --git a/ale_linters/javascript/xo.vim b/ale_linters/javascript/xo.vim
index 4ba39101..e24f4a82 100644
--- a/ale_linters/javascript/xo.vim
+++ b/ale_linters/javascript/xo.vim
@@ -14,7 +14,7 @@ endfunction
 function! ale_linters#javascript#xo#GetCommand(buffer) abort
     return ale#Escape(ale_linters#javascript#xo#GetExecutable(a:buffer))
     \   . ' ' . ale#Var(a:buffer, 'javascript_xo_options')
-    \   . ' --reporter unix --stdin --stdin-filename %s'
+    \   . ' --reporter json --stdin --stdin-filename %s'
 endfunction
 
 " xo uses eslint and the output format is the same
@@ -22,5 +22,5 @@ call ale#linter#Define('javascript', {
 \   'name': 'xo',
 \   'executable': function('ale_linters#javascript#xo#GetExecutable'),
 \   'command': function('ale_linters#javascript#xo#GetCommand'),
-\   'callback': 'ale#handlers#eslint#Handle',
+\   'callback': 'ale#handlers#eslint#HandleJSON',
 \})
diff --git a/ale_linters/typescript/eslint.vim b/ale_linters/typescript/eslint.vim
index bf849337..33a21440 100644
--- a/ale_linters/typescript/eslint.vim
+++ b/ale_linters/typescript/eslint.vim
@@ -5,5 +5,5 @@ call ale#linter#Define('typescript', {
 \   'name': 'eslint',
 \   'executable': function('ale#handlers#eslint#GetExecutable'),
 \   'command': function('ale#handlers#eslint#GetCommand'),
-\   'callback': 'ale#handlers#eslint#Handle',
+\   'callback': 'ale#handlers#eslint#HandleJSON',
 \})
diff --git a/ale_linters/typescript/xo.vim b/ale_linters/typescript/xo.vim
index 8b015efd..0a3a717b 100644
--- a/ale_linters/typescript/xo.vim
+++ b/ale_linters/typescript/xo.vim
@@ -11,7 +11,7 @@ endfunction
 function! ale_linters#typescript#xo#GetCommand(buffer) abort
     return ale#Escape(ale_linters#typescript#xo#GetExecutable(a:buffer))
     \   . ale#Pad(ale#Var(a:buffer, 'typescript_xo_options'))
-    \   . ' --reporter unix --stdin --stdin-filename %s'
+    \   . ' --reporter json --stdin --stdin-filename %s'
 endfunction
 
 " xo uses eslint and the output format is the same
@@ -19,5 +19,5 @@ call ale#linter#Define('typescript', {
 \   'name': 'xo',
 \   'executable': function('ale_linters#typescript#xo#GetExecutable'),
 \   'command': function('ale_linters#typescript#xo#GetCommand'),
-\   'callback': 'ale#handlers#eslint#Handle',
+\   'callback': 'ale#handlers#eslint#HandleJSON',
 \})
diff --git a/autoload/ale/handlers/eslint.vim b/autoload/ale/handlers/eslint.vim
index 5183f4cd..4d533ff2 100644
--- a/autoload/ale/handlers/eslint.vim
+++ b/autoload/ale/handlers/eslint.vim
@@ -44,16 +44,9 @@ function! ale#handlers#eslint#GetCommand(buffer) abort
 
     return ale#node#Executable(a:buffer, l:executable)
     \   . (!empty(l:options) ? ' ' . l:options : '')
-    \   . ' -f unix --stdin --stdin-filename %s'
+    \   . ' -f json --stdin --stdin-filename %s'
 endfunction
 
-let s:col_end_patterns = [
-\   '\vParsing error: Unexpected token (.+) ?',
-\   '\v''(.+)'' is not defined.',
-\   '\v%(Unexpected|Redundant use of) [''`](.+)[''`]',
-\   '\vUnexpected (console) statement',
-\]
-
 function! s:AddHintsForTypeScriptParsingErrors(output) abort
     for l:item in a:output
         let l:item.text = substitute(
@@ -90,22 +83,71 @@ function! s:CheckForBadConfig(buffer, lines) abort
     return 0
 endfunction
 
-function! ale#handlers#eslint#Handle(buffer, lines) abort
-    if s:CheckForBadConfig(a:buffer, a:lines)
-        return [{
-        \   'lnum': 1,
-        \   'text': 'eslint configuration error (type :ALEDetail for more information)',
-        \   'detail': join(a:lines, "\n"),
-        \}]
+function! s:parseJSON(buffer, lines) abort
+    try
+        let l:parsed = json_decode(a:lines[-1])
+    catch
+        return []
+    endtry
+
+    if type(l:parsed) != v:t_list || empty(l:parsed)
+        return []
     endif
 
-    if a:lines == ['Could not connect']
-        return [{
-        \   'lnum': 1,
-        \   'text': 'Could not connect to eslint_d. Try updating eslint_d or killing it.',
-        \}]
+    let l:errors = l:parsed[0]['messages']
+
+    if empty(l:errors)
+        return []
     endif
 
+    let l:output = []
+
+    for l:error in l:errors
+        let l:obj = ({
+        \   'lnum': get(l:error, 'line', 0),
+        \   'text': get(l:error, 'message', ''),
+        \   'type': 'E',
+        \})
+
+        if get(l:error, 'severity', 0) is# 1
+            let l:obj.type = 'W'
+        endif
+
+        if has_key(l:error, 'ruleId')
+            let l:code = l:error['ruleId']
+
+            " Sometimes ESLint returns null here
+            if !empty(l:code)
+                let l:obj.code = l:code
+            endif
+        endif
+
+        if has_key(l:error, 'column')
+            let l:obj.col = l:error['column']
+        endif
+
+        if has_key(l:error, 'endColumn')
+            let l:obj.end_col = l:error['endColumn'] - 1
+        endif
+
+        if has_key(l:error, 'endLine')
+            let l:obj.end_lnum = l:error['endLine']
+        endif
+
+        call add(l:output, l:obj)
+    endfor
+
+    return l:output
+endfunction
+
+let s:col_end_patterns = [
+\   '\vParsing error: Unexpected token (.+) ?',
+\   '\v''(.+)'' is not defined.',
+\   '\v%(Unexpected|Redundant use of) [''`](.+)[''`]',
+\   '\vUnexpected (console) statement',
+\]
+
+function! s:parseLines(buffer, lines) abort
     " Matches patterns line the following:
     "
     " /path/to/some-filename.js:47:14: Missing trailing comma. [Warning/comma-dangle]
@@ -120,12 +162,6 @@ function! ale#handlers#eslint#Handle(buffer, lines) abort
     for l:match in ale#util#GetMatches(a:lines, [l:pattern, l:parsing_pattern])
         let l:text = l:match[3]
 
-        if ale#Var(a:buffer, 'javascript_eslint_suppress_eslintignore')
-            if l:text =~# '^File ignored'
-                continue
-            endif
-        endif
-
         let l:obj = {
         \   'lnum': l:match[1] + 0,
         \   'col': l:match[2] + 0,
@@ -143,11 +179,6 @@ function! ale#handlers#eslint#Handle(buffer, lines) abort
         " The code can be something like 'Error/foo/bar', or just 'Error'
         if !empty(get(l:split_code, 1))
             let l:obj.code = join(l:split_code[1:], '/')
-
-            if l:obj.code is# 'no-trailing-spaces'
-            \&& !ale#Var(a:buffer, 'warn_about_trailing_whitespace')
-                continue
-            endif
         endif
 
         for l:col_match in ale#util#GetMatches(l:text, s:col_end_patterns)
@@ -157,9 +188,59 @@ function! ale#handlers#eslint#Handle(buffer, lines) abort
         call add(l:output, l:obj)
     endfor
 
+    return l:output
+endfunction
+
+function! s:FilterResult(buffer, obj) abort
+    if ale#Var(a:buffer, 'javascript_eslint_suppress_eslintignore')
+        if a:obj.text =~# '^File ignored'
+            return 0
+        endif
+    endif
+
+    if has_key(a:obj, 'code') && a:obj.code is# 'no-trailing-spaces'
+    \&& !ale#Var(a:buffer, 'warn_about_trailing_whitespace')
+        return 0
+    endif
+
+    return 1
+endfunction
+
+function! s:HandleESLintOutput(buffer, lines, type) abort
+    if s:CheckForBadConfig(a:buffer, a:lines)
+        return [{
+        \   'lnum': 1,
+        \   'text': 'eslint configuration error (type :ALEDetail for more information)',
+        \   'detail': join(a:lines, "\n"),
+        \}]
+    endif
+
+    if a:lines == ['Could not connect']
+        return [{
+        \   'lnum': 1,
+        \   'text': 'Could not connect to eslint_d. Try updating eslint_d or killing it.',
+        \}]
+    endif
+
+    if a:type is# 'json'
+        let l:output = s:parseJSON(a:buffer, a:lines)
+    else
+        let l:output = s:parseLines(a:buffer, a:lines)
+    endif
+
+    call filter(l:output, {idx, obj -> s:FilterResult(a:buffer, obj)})
+
     if expand('#' . a:buffer . ':t') =~? '\.tsx\?$'
         call s:AddHintsForTypeScriptParsingErrors(l:output)
     endif
 
     return l:output
 endfunction
+
+function! ale#handlers#eslint#HandleJSON(buffer, lines) abort
+    return s:HandleESLintOutput(a:buffer, a:lines, 'json')
+endfunction
+
+function! ale#handlers#eslint#Handle(buffer, lines) abort
+    return s:HandleESLintOutput(a:buffer, a:lines, 'lines')
+endfunction
diff --git a/autoload/ale/lsp/response.vim b/autoload/ale/lsp/response.vim
index 9ce05260..30da77e1 100644
--- a/autoload/ale/lsp/response.vim
+++ b/autoload/ale/lsp/response.vim
@@ -90,7 +90,7 @@ function! ale#lsp#response#ReadTSServerDiagnostics(response) abort
         \   'lnum': l:diagnostic.start.line,
         \   'col': l:diagnostic.start.offset,
         \   'end_lnum': l:diagnostic.end.line,
-        \   'end_col': l:diagnostic.end.offset,
+        \   'end_col': l:diagnostic.end.offset - 1,
         \}
 
         if has_key(l:diagnostic, 'code')
diff --git a/test/command_callback/test_xo_command_callback.vader b/test/command_callback/test_xo_command_callback.vader
index 12de595d..65cb4f8a 100644
--- a/test/command_callback/test_xo_command_callback.vader
+++ b/test/command_callback/test_xo_command_callback.vader
@@ -7,14 +7,14 @@ After:
   call ale#assert#TearDownLinterTest()
 
 Execute(The XO executable should be called):
-  AssertLinter 'xo', ale#Escape('xo') . ' --reporter unix --stdin --stdin-filename %s'
+  AssertLinter 'xo', ale#Escape('xo') . ' --reporter json --stdin --stdin-filename %s'
 
 Execute(The XO executable should be configurable):
   let b:ale_typescript_xo_executable = 'foobar'
 
-  AssertLinter 'foobar', ale#Escape('foobar') . ' --reporter unix --stdin --stdin-filename %s'
+  AssertLinter 'foobar', ale#Escape('foobar') . ' --reporter json --stdin --stdin-filename %s'
 
 Execute(The XO options should be configurable):
   let b:ale_typescript_xo_options = '--wat'
 
-  AssertLinter 'xo', ale#Escape('xo') . ' --wat --reporter unix --stdin --stdin-filename %s'
+  AssertLinter 'xo', ale#Escape('xo') . ' --wat --reporter json --stdin --stdin-filename %s'
diff --git a/test/handler/test_eslint_json_handler.vader b/test/handler/test_eslint_json_handler.vader
new file mode 100644
index 00000000..8e07bd80
--- /dev/null
+++ b/test/handler/test_eslint_json_handler.vader
@@ -0,0 +1,360 @@
+Before:
+  Save g:ale_javascript_eslint_suppress_eslintignore
+  Save g:ale_javascript_eslint_suppress_missing_config
+  Save g:ale_warn_about_trailing_whitespace
+  Save g:ale_warn_about_trailing_blank_lines
+
+  let g:ale_javascript_eslint_suppress_eslintignore = 0
+  let g:ale_javascript_eslint_suppress_missing_config = 0
+  let g:ale_warn_about_trailing_whitespace = 1
+  let g:ale_warn_about_trailing_blank_lines = 1
+  unlet! b:ale_warn_about_trailing_whitespace
+  unlet! b:ale_warn_about_trailing_blank_lines
+
+After:
+  Restore
+
+  unlet! b:ale_javascript_eslint_suppress_eslintignore
+  unlet! b:ale_javascript_eslint_suppress_missing_config
+  unlet! b:ale_warn_about_trailing_whitespace
+  unlet! b:ale_warn_about_trailing_blank_lines
+  unlet! g:config_error_lines
+
+Execute(The eslint handler should parse json correctly):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 1,
+  \     'end_lnum': 1,
+  \     'col': 7,
+  \     'end_col': 14,
+  \     'text': '''variable'' is assigned a value but never used.',
+  \     'code': 'no-unused-vars',
+  \     'type': 'W',
+  \   },
+  \   {
+  \     'lnum': 5,
+  \     'col': 15,
+  \     'text': 'Missing semicolon.',
+  \     'code': 'semi',
+  \     'type': 'W',
+  \   },
+  \   {
+  \     'lnum': 7,
+  \     'end_lnum': 7,
+  \     'col': 7,
+  \     'end_col': 14,
+  \     'text': '''variable'' is already defined.',
+  \     'code': 'no-redeclare',
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), [
+  \ '[{"filePath":"foo.js","messages":[{"ruleId":"no-unused-vars","severity":1,"message":"''variable'' is assigned a value but never used.","line":1,"column":7,"nodeType":"Identifier","endLine":1,"endColumn":15},{"ruleId":"semi","severity":1,"message":"Missing semicolon.","line":5,"column":15,"nodeType":"ExpressionStatement","fix":{"range":[46,46],"text":";"}},{"ruleId":"no-redeclare","severity":2,"message":"''variable'' is already defined.","line":7,"column":7,"nodeType":"Identifier","endLine":7,"endColumn":15}],"errorCount":1,"warningCount":3,"fixableErrorCount":0,"fixableWarningCount":1,"source":"const variable = {\n    a: 3\n};\n\nconsole.log(1)\n\nclass variable {\n}\n"}]'
+  \ ])
+
+Execute(The eslint handler should print a message about a missing configuration file):
+  let g:config_error_lines = [
+  \   '',
+  \   'Oops! Something went wrong! :(',
+  \   '',
+  \   'ESLint couldn''t find a configuration file. To set up a configuration file for this project, please run:',
+  \   '    eslint --init',
+  \   '',
+  \   'ESLint looked for configuration files in /some/path/or/other and its ancestors.',
+  \   '',
+  \   'If you think you already have a configuration file or if you need more help, please stop by the ESLint chat room: https://gitter.im/eslint/eslint',
+  \   '',
+  \ ]
+
+  AssertEqual
+  \ [{
+  \   'lnum': 1,
+  \   'text': 'eslint configuration error (type :ALEDetail for more information)',
+  \   'detail': join(g:config_error_lines, "\n"),
+  \ }],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), g:config_error_lines[:])
+
+Execute(The eslint handler should allow the missing config error to be suppressed):
+  let b:ale_javascript_eslint_suppress_missing_config = 1
+  let g:config_error_lines = [
+  \   '',
+  \   'Oops! Something went wrong! :(',
+  \   '',
+  \   'ESLint couldn''t find a configuration file. To set up a configuration file for this project, please run:',
+  \   '    eslint --init',
+  \   '',
+  \   'ESLint looked for configuration files in /some/path/or/other and its ancestors.',
+  \   '',
+  \   'If you think you already have a configuration file or if you need more help, please stop by the ESLint chat room: https://gitter.im/eslint/eslint',
+  \   '',
+  \ ]
+
+  AssertEqual
+  \ [],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), g:config_error_lines[:])
+
+Execute(The eslint handler should print a message for config parsing errors):
+  let g:config_error_lines = [
+  \ 'Cannot read config file: /some/path/or/other/.eslintrc.js',
+  \ 'Error: Unexpected token <<',
+  \ '/some/path/or/other/.eslintrc.js:1',
+  \ '(function (exports, require, module, __filename, __dirname) { <<<>>>',
+  \ '                                                              ^^',
+  \ 'SyntaxError: Unexpected token <<',
+  \ '    at Object.exports.runInThisContext (vm.js:76:16)',
+  \ '    at Module._compile (module.js:528:28)',
+  \ '    at Object.Module._extensions..js (module.js:565:10)',
+  \ '    at Module.load (module.js:473:32)',
+  \ '    at tryModuleLoad (module.js:432:12)',
+  \ '    at Function.Module._load (module.js:424:3)',
+  \ '    at Module.require (module.js:483:17)',
+  \ '    at require (internal/module.js:20:19)',
+  \ '    at module.exports (/usr/local/lib/node_modules/eslint/node_modules/require-uncached/index.js:14:12)',
+  \ '    at loadJSConfigFile (/usr/local/lib/node_modules/eslint/lib/config/config-file.js:160:16)',
+  \]
+
+  AssertEqual
+  \ [{
+  \   'lnum': 1,
+  \   'text': 'eslint configuration error (type :ALEDetail for more information)',
+  \   'detail': join(g:config_error_lines, "\n"),
+  \ }],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), g:config_error_lines[:])
+
+Execute(Suppressing missing configs shouldn't suppress parsing errors):
+  let b:ale_javascript_eslint_suppress_missing_config = 1
+  let g:config_error_lines = [
+  \ 'Cannot read config file: /some/path/or/other/.eslintrc.js',
+  \ 'Error: Unexpected token <<',
+  \ '/some/path/or/other/.eslintrc.js:1',
+  \ '(function (exports, require, module, __filename, __dirname) { <<<>>>',
+  \ '                                                              ^^',
+  \ 'SyntaxError: Unexpected token <<',
+  \ '    at Object.exports.runInThisContext (vm.js:76:16)',
+  \ '    at Module._compile (module.js:528:28)',
+  \ '    at Object.Module._extensions..js (module.js:565:10)',
+  \ '    at Module.load (module.js:473:32)',
+  \ '    at tryModuleLoad (module.js:432:12)',
+  \ '    at Function.Module._load (module.js:424:3)',
+  \ '    at Module.require (module.js:483:17)',
+  \ '    at require (internal/module.js:20:19)',
+  \ '    at module.exports (/usr/local/lib/node_modules/eslint/node_modules/require-uncached/index.js:14:12)',
+  \ '    at loadJSConfigFile (/usr/local/lib/node_modules/eslint/lib/config/config-file.js:160:16)',
+  \]
+
+  AssertEqual
+  \ [{
+  \   'lnum': 1,
+  \   'text': 'eslint configuration error (type :ALEDetail for more information)',
+  \   'detail': join(g:config_error_lines, "\n"),
+  \ }],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), g:config_error_lines[:])
+
+Execute(The eslint handler should print a message for invalid configuration settings):
+  let g:config_error_lines = [
+  \ '/home/w0rp/git/wazoku/wazoku-spotlight/.eslintrc.js:',
+  \ ' Configuration for rule "indent" is invalid:',
+  \ ' Value "off" is the wrong type.',
+  \ '',
+  \ 'Error: /home/w0rp/git/wazoku/wazoku-spotlight/.eslintrc.js:',
+  \ ' Configuration for rule "indent" is invalid:',
+  \ ' Value "off" is the wrong type.',
+  \ '',
+  \ '    at validateRuleOptions (/usr/local/lib/node_modules/eslint/lib/config/config-validator.js:115:15)',
+  \ '    at /usr/local/lib/node_modules/eslint/lib/config/config-validator.js:162:13',
+  \ '    at Array.forEach (native)',
+  \ '    at Object.validate (/usr/local/lib/node_modules/eslint/lib/config/config-validator.js:161:35)',
+  \ '    at Object.load (/usr/local/lib/node_modules/eslint/lib/config/config-file.js:522:19)',
+  \ '    at loadConfig (/usr/local/lib/node_modules/eslint/lib/config.js:63:33)',
+  \ '    at getLocalConfig (/usr/local/lib/node_modules/eslint/lib/config.js:130:29)',
+  \ '    at Config.getConfig (/usr/local/lib/node_modules/eslint/lib/config.js:256:22)',
+  \ '    at processText (/usr/local/lib/node_modules/eslint/lib/cli-engine.js:224:33)',
+  \ '    at CLIEngine.executeOnText (/usr/local/lib/node_modules/eslint/lib/cli-engine.js:756:26)',
+  \]
+
+  AssertEqual
+  \ [{
+  \   'lnum': 1,
+  \   'text': 'eslint configuration error (type :ALEDetail for more information)',
+  \   'detail': join(g:config_error_lines, "\n"),
+  \ }],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), g:config_error_lines[:])
+
+Execute(Suppressing missing configs shouldn't suppress invalid config errors):
+  let b:ale_javascript_eslint_suppress_missing_config = 1
+  let g:config_error_lines = [
+  \ '/home/w0rp/git/wazoku/wazoku-spotlight/.eslintrc.js:',
+  \ ' Configuration for rule "indent" is invalid:',
+  \ ' Value "off" is the wrong type.',
+  \ '',
+  \ 'Error: /home/w0rp/git/wazoku/wazoku-spotlight/.eslintrc.js:',
+  \ ' Configuration for rule "indent" is invalid:',
+  \ ' Value "off" is the wrong type.',
+  \ '',
+  \ '    at validateRuleOptions (/usr/local/lib/node_modules/eslint/lib/config/config-validator.js:115:15)',
+  \ '    at /usr/local/lib/node_modules/eslint/lib/config/config-validator.js:162:13',
+  \ '    at Array.forEach (native)',
+  \ '    at Object.validate (/usr/local/lib/node_modules/eslint/lib/config/config-validator.js:161:35)',
+  \ '    at Object.load (/usr/local/lib/node_modules/eslint/lib/config/config-file.js:522:19)',
+  \ '    at loadConfig (/usr/local/lib/node_modules/eslint/lib/config.js:63:33)',
+  \ '    at getLocalConfig (/usr/local/lib/node_modules/eslint/lib/config.js:130:29)',
+  \ '    at Config.getConfig (/usr/local/lib/node_modules/eslint/lib/config.js:256:22)',
+  \ '    at processText (/usr/local/lib/node_modules/eslint/lib/cli-engine.js:224:33)',
+  \ '    at CLIEngine.executeOnText (/usr/local/lib/node_modules/eslint/lib/cli-engine.js:756:26)',
+  \]
+
+  AssertEqual
+  \ [{
+  \   'lnum': 1,
+  \   'text': 'eslint configuration error (type :ALEDetail for more information)',
+  \   'detail': join(g:config_error_lines, "\n"),
+  \ }],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), g:config_error_lines[:])
+
+Execute(The eslint handler should print a message when import is not used in a module):
+  let g:config_error_lines = [
+  \ 'ImportDeclaration should appear when the mode is ES6 and in the module context.',
+  \ 'AssertionError: ImportDeclaration should appear when the mode is ES6 and in the module context.',
+  \ '    at Referencer.ImportDeclaration (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint-scope/lib/referencer.js:597:9)',
+  \ '    at Referencer.Visitor.visit (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/esrecurse/esrecurse.js:122:34)',
+  \ '    at Referencer.Visitor.visitChildren (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/esrecurse/esrecurse.js:101:38)',
+  \ '    at Referencer.Program (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint-scope/lib/referencer.js:449:14)',
+  \ '    at Referencer.Visitor.visit (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/esrecurse/esrecurse.js:122:34)',
+  \ '    at Object.analyze (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint-scope/lib/index.js:138:16)',
+  \ '    at EventEmitter.module.exports.api.verify (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint/lib/eslint.js:887:40)',
+  \ '    at processText (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint/lib/cli-engine.js:278:31)',
+  \ '    at CLIEngine.executeOnText (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint/lib/cli-engine.js:734:26)',
+  \ '    at Object.execute (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint/lib/cli.js:171:42)   ',
+  \]
+
+  AssertEqual
+  \ [{
+  \   'lnum': 1,
+  \   'text': 'eslint configuration error (type :ALEDetail for more information)',
+  \   'detail': join(g:config_error_lines, "\n"),
+  \ }],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), g:config_error_lines[:])
+
+Execute(Suppressing missing configs shouldn't suppress module import errors):
+  let b:ale_javascript_eslint_suppress_missing_config = 1
+  let g:config_error_lines = [
+  \ 'ImportDeclaration should appear when the mode is ES6 and in the module context.',
+  \ 'AssertionError: ImportDeclaration should appear when the mode is ES6 and in the module context.',
+  \ '    at Referencer.ImportDeclaration (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint-scope/lib/referencer.js:597:9)',
+  \ '    at Referencer.Visitor.visit (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/esrecurse/esrecurse.js:122:34)',
+  \ '    at Referencer.Visitor.visitChildren (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/esrecurse/esrecurse.js:101:38)',
+  \ '    at Referencer.Program (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint-scope/lib/referencer.js:449:14)',
+  \ '    at Referencer.Visitor.visit (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/esrecurse/esrecurse.js:122:34)',
+  \ '    at Object.analyze (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint-scope/lib/index.js:138:16)',
+  \ '    at EventEmitter.module.exports.api.verify (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint/lib/eslint.js:887:40)',
+  \ '    at processText (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint/lib/cli-engine.js:278:31)',
+  \ '    at CLIEngine.executeOnText (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint/lib/cli-engine.js:734:26)',
+  \ '    at Object.execute (/home/w0rp/git/wazoku/wazoku-spotlight/spotlight/static/node_modules/eslint/lib/cli.js:171:42)   ',
+  \]
+
+  AssertEqual
+  \ [{
+  \   'lnum': 1,
+  \   'text': 'eslint configuration error (type :ALEDetail for more information)',
+  \   'detail': join(g:config_error_lines, "\n"),
+  \ }],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), g:config_error_lines[:])
+
+Execute(The eslint handler should hint about using typescript-eslint-parser):
+  silent! noautocmd file foo.ts
+
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 2,
+  \     'col': 1,
+  \     'text': 'Parsing error (You may need configure typescript-eslint-parser): The keyword ''interface'' is reserved',
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), [
+  \ '[{"filePath":"foo.ts","messages":[{"ruleId":null,"fatal":true,"severity":2,"message":"Parsing error: The keyword ''interface'' is reserved","line":2,"column":1}],"errorCount":1,"warningCount":0,"fixableErrorCount":0,"fixableWarningCount":0,"source":"\ninterface test {}\n"}]',
+  \ ])
+
+Execute(eslint should warn about ignored files by default):
+  AssertEqual
+  \ [{
+  \    'lnum': 0,
+  \    'type': 'W',
+  \    'text': 'File ignored because of a matching ignore pattern. Use "--no-ignore" to override.'
+  \ }],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), [
+  \  '[{"filePath":"/path/to/some/ignored/file.js","messages":[{"fatal":false,"severity":1,"message":"File ignored because of a matching ignore pattern. Use \"--no-ignore\" to override."}],"errorCount":0,"warningCount":1,"fixableErrorCount":0,"fixableWarningCount":0}]',
+  \ ])
+
+  AssertEqual
+  \ [{
+  \    'lnum': 0,
+  \    'type': 'W',
+  \    'text': 'File ignored by default. Use "--ignore-pattern ''!node_modules/*''" to override.',
+  \ }],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), [
+  \  '[{"filePath":"/path/to/some/ignored/file.js","messages":[{"fatal":false,"severity":1,"message":"File ignored by default. Use \"--ignore-pattern ''!node_modules/*''\" to override."}],"errorCount":0,"warningCount":1,"fixableErrorCount":0,"fixableWarningCount":0}]',
+  \ ])
+
+Execute(eslint should not warn about ignored files when explicitly disabled):
+  let g:ale_javascript_eslint_suppress_eslintignore = 1
+
+  AssertEqual
+  \ [],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), [
+  \  '[{"filePath":"/path/to/some/ignored/file.js","messages":[{"fatal":false,"severity":1,"message":"File ignored because of a matching ignore pattern. Use \"--no-ignore\" to override."}],"errorCount":0,"warningCount":1,"fixableErrorCount":0,"fixableWarningCount":0}]',
+  \ ])
+
+  AssertEqual
+  \ [],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), [
+  \  '[{"filePath":"/path/to/some/ignored/file.js","messages":[{"fatal":false,"severity":1,"message":"File ignored by default. Use \"--ignore-pattern ''!node_modules/*''\" to override."}],"errorCount":0,"warningCount":1,"fixableErrorCount":0,"fixableWarningCount":0}]',
+  \ ])
+
+Execute(Failing to connect to eslint_d should be handled correctly):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 1,
+  \     'text': 'Could not connect to eslint_d. Try updating eslint_d or killing it.',
+  \   },
+  \ ],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), [
+  \  'Could not connect',
+  \ ])
+
+Execute(Disabling warnings about trailing spaces should work):
+  silent! noautocmd file foo.ts
+
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 2,
+  \     'col': 16,
+  \     'code': 'no-trailing-spaces',
+  \     'type': 'W',
+  \     'text': 'Trailing spaces not allowed.',
+  \   },
+  \ ],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), [
+  \ '[{"filePath":"foo.js","messages":[{"ruleId":"no-trailing-spaces","severity":1,"message":"Trailing spaces not allowed.","line":2,"column":16,"nodeType":"Program","fix":{"range":[16,17],"text":""}}],"errorCount":0,"warningCount":1,"fixableErrorCount":0,"fixableWarningCount":1,"source":"\nconsole.log(1); \n"}]'
+  \ ])
+
+  let g:ale_warn_about_trailing_whitespace = 0
+
+  AssertEqual
+  \ [],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), [
+  \ '[{"filePath":"foo.js","messages":[{"ruleId":"no-trailing-spaces","severity":1,"message":"Trailing spaces not allowed.","line":2,"column":16,"nodeType":"Program","fix":{"range":[16,17],"text":""}}],"errorCount":0,"warningCount":1,"fixableErrorCount":0,"fixableWarningCount":1,"source":"\nconsole.log(1); \n"}]'
+  \ ])
+
+  let g:ale_warn_about_trailing_whitespace = 1
+  let b:ale_warn_about_trailing_whitespace = 0
+
+  AssertEqual
+  \ [],
+  \ ale#handlers#eslint#HandleJSON(bufnr(''), [
+  \ '[{"filePath":"foo.js","messages":[{"ruleId":"no-trailing-spaces","severity":1,"message":"Trailing spaces not allowed.","line":2,"column":16,"nodeType":"Program","fix":{"range":[16,17],"text":""}}],"errorCount":0,"warningCount":1,"fixableErrorCount":0,"fixableWarningCount":1,"source":"\nconsole.log(1); \n"}]'
+  \ ])
diff --git a/test/lsp/test_read_lsp_diagnostics.vader b/test/lsp/test_read_lsp_diagnostics.vader
index 377e73d9..61ffc73f 100644
--- a/test/lsp/test_read_lsp_diagnostics.vader
+++ b/test/lsp/test_read_lsp_diagnostics.vader
@@ -219,7 +219,7 @@ Execute(ale#lsp#response#ReadTSServerDiagnostics() should handle tsserver respon
   \     'lnum': 1,
   \     'col': 11,
   \     'end_lnum': 1,
-  \     'end_col': 17,
+  \     'end_col': 16,
   \   },
   \ ],
   \ ale#lsp#response#ReadTSServerDiagnostics({"seq":0,"type":"event","event":"semanticDiag","body":{"file":"/bar/foo.ts","diagnostics":[{"start":{"line":1,"offset":11},"end":{"line":1,"offset":17},"text":"Operator ''+'' cannot be applied to types ''3'' and ''{}''.","code":2365}]}})
@@ -234,7 +234,7 @@ Execute(ale#lsp#response#ReadTSServerDiagnostics() should handle warnings from t
   \     'code': '2515',
   \     'end_lnum': 27,
   \     'type': 'W',
-  \     'end_col': 14,
+  \     'end_col': 13,
   \     'text': 'Calls to ''console.log'' are not allowed. (no-console)',
   \   }
   \ ],
@@ -250,7 +250,7 @@ Execute(ale#lsp#response#ReadTSServerDiagnostics() should handle suggestions fro
   \     'code': '2515',
   \     'end_lnum': 27,
   \     'type': 'I',
-  \     'end_col': 14,
+  \     'end_col': 13,
   \     'text': 'Some info',
   \   }
   \ ],
diff --git a/test/test_eslint_executable_detection.vader b/test/test_eslint_executable_detection.vader
index 5599576e..64383dcb 100644
--- a/test/test_eslint_executable_detection.vader
+++ b/test/test_eslint_executable_detection.vader
@@ -59,11 +59,11 @@ Execute(eslint.js executables should be run with node on Windows):
     AssertEqual
     \ ale#Escape('node.exe') . ' '
     \   . ale#Escape(ale#path#Simplify(g:dir . '/eslint-test-files/react-app/node_modules/eslint/bin/eslint.js'))
-    \   . ' -f unix --stdin --stdin-filename %s',
+    \   . ' -f json --stdin --stdin-filename %s',
     \ ale#handlers#eslint#GetCommand(bufnr(''))
   else
     AssertEqual
     \ ale#Escape(ale#path#Simplify(g:dir . '/eslint-test-files/react-app/node_modules/eslint/bin/eslint.js'))
-    \   . ' -f unix --stdin --stdin-filename %s',
+    \   . ' -f json --stdin --stdin-filename %s',
     \ ale#handlers#eslint#GetCommand(bufnr(''))
   endif
diff --git a/test/test_ignoring_linters.vader b/test/test_ignoring_linters.vader
index d758af5c..19f45add 100644
--- a/test/test_ignoring_linters.vader
+++ b/test/test_ignoring_linters.vader
@@ -249,7 +249,7 @@ Execute(Buffer ignore lists should be applied for tsserver):
   \     'nr': 1005,
   \     'code': '1005',
   \     'type': 'E',
-  \     'end_col': 15,
+  \     'end_col': 14,
   \     'end_lnum': 2,
   \     'text': ''','' expected.',
   \   },
@@ -344,7 +344,7 @@ Execute(ale_disable_lsp should be applied for tsserver):
   \     'nr': 1005,
   \     'code': '1005',
   \     'type': 'E',
-  \     'end_col': 15,
+  \     'end_col': 14,
   \     'end_lnum': 2,
   \     'text': ''','' expected.',
   \   },