Eslint linebreak style error windows

Enforce consistent linebreak style

🔧 Fixable

Some problems reported by this rule are automatically fixable by the --fix command line option

When developing with a lot of people all having different editors, VCS applications and operating systems it may occur that
different line endings are written by either of the mentioned (might especially happen when using the windows and mac versions of SourceTree together).

The linebreaks (new lines) used in windows operating system are usually carriage returns (CR) followed by a line feed (LF) making it a carriage return line feed (CRLF)
whereas Linux and Unix use a simple line feed (LF). The corresponding control sequences are "\n" (for LF) and "\r\n" for (CRLF).

Many versioning systems (like git and subversion) can automatically ensure the correct ending. However to cover all contingencies, you can activate this rule.

Rule Details

This rule enforces consistent line endings independent of operating system, VCS, or editor used across your codebase.

Options

This rule has a string option:

  • "unix" (default) enforces the usage of Unix line endings: \n for LF.
  • "windows" enforces the usage of Windows line endings: \r\n for CRLF.

unix

Examples of incorrect code for this rule with the default "unix" option:

Examples of correct code for this rule with the default "unix" option:

Open in Playground

/*eslint linebreak-style: ["error", "unix"]*/

var a = 'a', // \n
    b = 'b'; // \n
// \n
function foo(params) { // \n
    // do stuff \n
}// \n

windows

Examples of incorrect code for this rule with the "windows" option:

Examples of correct code for this rule with the "windows" option:

Open in Playground

/*eslint linebreak-style: ["error", "windows"]*/

var a = 'a', // \r\n
    b = 'b'; // \r\n
// \r\n
function foo(params) { // \r\n
    // do stuff \r\n
} // \r\n

Using this rule with version control systems

Version control systems sometimes have special behavior for linebreaks. To make it easy for developers to contribute to your codebase from different platforms, you may want to configure your VCS to handle linebreaks appropriately.

For example, the default behavior of git on Windows systems is to convert LF linebreaks to CRLF when checking out files, but to store the linebreaks as LF when committing a change. This will cause the linebreak-style rule to report errors if configured with the "unix" setting, because the files that ESLint sees will have CRLF linebreaks. If you use git, you may want to add a line to your .gitattributes file to prevent git from converting linebreaks in .js files:

*.js text eol=lf

When Not To Use It

If you aren’t concerned about having different line endings within your code, then you can safely turn this rule off.

Compatibility

  • JSCS: validateLineBreaks

Version

This rule was introduced in ESLint v0.21.0.

Resources

  • Rule source
  • Tests source

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Comments

@protoEvangelion

On Windows, with the current eslint setup, you get this error: Expected linebreaks to be 'LF' but found 'CRLF'.

The eslint site says this is because Unix and Windows have two different linebreaks.

Is there a better way to fix this besides adding "linebreak-style": 0, to the .eslintrc file?

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@diegohaz

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@protoEvangelion



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I’m using atom. Do I have to wire it up somehow to make that take effect?

@ajhool

Atom natively supports this feature (see this issue):
atom/line-ending-selector#5

Summary:
Select File->Settings
Select ‘Packages’
Under Core Packages->line-ending-selector, select ‘Settings’
Under the ‘Default line ending’ setting, choose ‘LF’ in the dropdown
You new files will now use LF as the default line ending setting. You can confirm this in the Atom status bar.

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@diegohaz

You can also run npm run lint -- --fix to get rid of current CRLF

You might also be interested on a React UI toolkit library I’m working on.

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Thanks @ajhool and @diegohaz! Looks like changing the Atom core package setting to LF fixed it :)

@joseph-teb

——————for windows globe in package.son will read all import files—add—
«rules»: {
«linebreak-style»: 0,
«global-require»: 0,
«eslint linebreak-style»: [0, «error», «windows»],

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@pashute

after npm install -g babel-eslint (had to repeat a few times and after closing windows, finally installed ok…)

change your .eslintrc.js to this:

module.exports = {
//extends: 'airbnb',
parser: 'babel-eslint',
env: {
  browser: true
},
plugins: ['react'],
  extends: ['eslint:recommended', 'plugin:react/recommended'],
rules: {
  // overrides
 }

};

react-native info gives me this:

Environment:
  OS: Windows 10
  Node: 8.11.1
  Yarn: 1.6.0
  npm: 6.0.1
  Watchman: Not Found
  Xcode: N/A
  Android Studio: Version  3.1.0.0 AI-173.4670197

Packages: (wanted => installed)
  react: 16.3.1 => 16.3.1
 react-native: 0.55.3 => 0.55.3

@bdjunayed

In User settings for the Vscode search crlf, and adjust your settings.

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@Jaman-dedy

I’ve got the same problem, it was due by the git configuration. when I commited file il the given branch, eof lf was radicaly changed into crlf. look out this link.. https://eslint.org/docs/2.0.0/rules/linebreak-style
you have to add in your .eslintrc.json in rules the following line
«linebreak-style»: [2, «windows»]

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@ghost

I’d the same problem. In the .eslintrc.json file change «line-break-style» to «unix». As CRLF is for Windows and LF is for unix

@RobFosterNYC

I was told that CRLF is for Linux and LF is for windows @ghost

@EssenceOfChaos

@RobFosterNYC — The LF setting stands for «Line Feed» and represents the \n character. This «backslash n» character represents a newline on Linux and Mac systems.

The CRLF setting stands for «Carriage Return, Line Feed» and represents the combination \r\n, which is used on Windows.

Setting the linebreak-style in .eslintrc.json to the value «unix», then running eslint --fix should automatically fix the issue.

@alejandrorossi

——————for windows globe in package.son will read all import files—add—
«rules»: {
«linebreak-style»: 0,
«global-require»: 0,
«eslint linebreak-style»: [0, «error», «windows»],

If problem persists, try this, but with «ESLint» instead «eslint»

@sunny775

Simply include this rule to your .eslintrc.js
module.exports = { rules: { 'linebreak-style': ["error", "windows"] } }

@DineshKachhot

——————for windows globe in package.son will read all import files—add—
«rules»: {
«linebreak-style»: 0,
«global-require»: 0,
«eslint linebreak-style»: [0, «error», «windows»],

What about Mac?

@Emmanuel-Odero

You can also run npm run lint — —fix to get rid of the current CRLF

@winwin1115

I’ve also had this eslint error.
I have solved by this way.

-Before bug fix:
image

-After bug fix:
image

This code is in .eslintrc.js file.

@just-hope-netizen

You can also run npm run lint -- --fix to get rid of current CRLF

You might also be interested on a React UI toolkit library I’m working on.

This solution worked for me

When using eslint in the gulp project i have encountered a problem with error like this
Expected linebreaks to be 'LF' but found 'CRLF' linebreak-style and I am using Windows environment for the running gulp and the entire error log is given below

 Kiran (master *) Lesson 4 $ gulp
 Using gulpfile c:\Users\Sai\Desktop\web-build-tools\4\
 gulpfile.js
 Starting 'styles'...
 Finished 'styles' after 17 ms
 Starting 'lint'...
 'lint' errored after 1.14 s
 ESLintError in plugin 'gulp-eslint'
 sage: Expected linebreaks to be 'LF' but found 'CRLF'.
 ails: fileName: c:\Users\Sai\Desktop\web-build-tools\4\js\extra.js



$>Users\Sai\Desktop\web-build-tools\4\js\extra.js
error  Expected linebreaks to be 'LF' but found 'CRLF'  linebreak-style

I have also including extra.js file as the error indicating possible mistake.

function getWindowHeight() {
    return window.innerHeight;
}

getWindowHeight();

asked Jun 15, 2016 at 4:55

SaiKiran's user avatar

SaiKiranSaiKiran

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Check if you have the linebreak-style rule configure as below either in your .eslintrc or in source code:

/*eslint linebreak-style: ["error", "unix"]*/

Since you’re working on Windows, you may want to use this rule instead:

/*eslint linebreak-style: ["error", "windows"]*/

Refer to the documentation of linebreak-style:

When developing with a lot of people all having different editors, VCS
applications and operating systems it may occur that different line
endings are written by either of the mentioned (might especially
happen when using the windows and mac versions of SourceTree
together).

The linebreaks (new lines) used in windows operating system are
usually carriage returns (CR) followed by a line feed (LF) making it a
carriage return line feed (CRLF) whereas Linux and Unix use a simple
line feed (LF). The corresponding control sequences are "\n" (for LF)
and "\r\n" for (CRLF).

This is a rule that is automatically fixable. The --fix option on the command line automatically fixes problems reported by this rule.

But if you wish to retain CRLF line-endings in your code (as you’re working on Windows) do not use the fix option.

Sergey Bogdanov's user avatar

answered Jun 15, 2016 at 5:11

Dheeraj Vepakomma's user avatar

2

I found it useful (where I wanted to ignore line feeds and not change any files) to ignore them in the .eslintrc using linebreak-style as per this answer: https://stackoverflow.com/a/43008668/1129108

module.exports = {
  extends: 'google',
  quotes: [2, 'single'],
  globals: {
    SwaggerEditor: false
  },
  env: {
    browser: true
  },
  rules:{
    "linebreak-style": 0
  }
};

answered Jun 20, 2017 at 20:55

The Coder's user avatar

The CoderThe Coder

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1

If you are using vscode and you are on Windows i would recommend you to click the option at the bottom-right of the window and set it to LF from CRLF. Because we should not turn off the configuration just for sake of removing errors on Windows

If you don’t see LF / CLRF, then right click the status bar and select Editor End of Line.

menu

Geoff's user avatar

Geoff

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answered Sep 20, 2018 at 5:14

Ram_T's user avatar

Ram_TRam_T

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2

Here is a really good way to manage this error. You can put the below line in .eslintrc.js file.

Based on the operating system, it will take appropriate line endings.

rules: {
        'linebreak-style': ['error', process.platform === 'win32' ? 'windows' : 'unix'],
 }

answered Dec 31, 2020 at 9:33

H_H's user avatar

H_HH_H

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7

If you want it in crlf (Windows Eol), go to File -> Preferences -> Settings. Type «end of line» in the User tab and make sure Files: Eol is set to \r\n and if you’re using the Prettier extension, make sure Prettier: End of Line is set to crlf. enter image description here Finally, on your eslintrc file, add this rule: 'linebreak-style': ['error', 'windows'] enter image description here

answered Oct 19, 2019 at 3:45

Wes's user avatar

WesWes

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4

add to our rule in the .eslintrc file ‘linebreak-style’:0 in Vue js

  rules: {
    'linebreak-style':0,
  }

enter image description here

answered Apr 3, 2021 at 17:05

Francisco Estrada's user avatar

git config core.autocrlf false

git rm —cached -r .

git reset —hard

answered Apr 27, 2021 at 20:12

Hakan Yıldırım's user avatar

3

Just made autocrlf param in .gitconfig file false and recloned the code. It worked!

[core]
autocrlf = false

answered Feb 14, 2019 at 7:28

vnxyz's user avatar

vnxyzvnxyz

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5

The same situation occurred when I was using VSCode with eslint. If you use VSCode,

1 — Click area that name can be both LF or CRLF where at the bottom right of the VScode.

2 — Select LF from the drop-down menu.

That’s worked for me.

enter image description here

answered Jul 9, 2020 at 9:58

Serhan C.'s user avatar

Serhan C.Serhan C.

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0

Happen with me because I ran git config core.autocrlf true and I forgot to rever back.

After that, when I checkout/pull new code, all LF (break line in Unix) was replaced by CRLF (Break line in Windows).

I ran linter, and all error messages are Expected linebreaks to be 'LF' but found 'CRLF'

To fix the issue, I checked autocrlf value by running git config --list | grep autocrlf and I got:

core.autocrlf=true
core.autocrlf=false

I edited the global GIT config ~/.gitconfig and replaced autocrlf = true by autocrlf = false.

After that, I went to my project and do the following (assuming the code in src/ folder):

CURRENT_BRANCH=$(git branch | grep \* | cut -d ' ' -f2);
rm -rf src/*
git checkout $CURRENT_BRANCH src/

answered Nov 14, 2018 at 11:17

Abdennour TOUMI's user avatar

Abdennour TOUMIAbdennour TOUMI

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If you are using vscode I would recommend you to click the option at the bottom-right of the window and set it to LF from CRLF..this fixed my errors

answered May 4, 2019 at 7:15

Athif Shaffy's user avatar

Athif ShaffyAthif Shaffy

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1

In case you want to change to LF and you are using VS Code you can do it per file like so:

Graphic showing how to change from CRLF to LF using VS CODE

answered Nov 18, 2022 at 15:53

Leopold Kristjansson's user avatar

If you are using WebStorm and you are on Windows i would recommend you to click settings/editor/code style/general tab and select «windows(\r\n) from the dropdown menu.These steps will also apply for Rider.

enter image description here

answered Jun 11, 2019 at 12:41

binary_fm's user avatar

binary_fmbinary_fm

1611 silver badge6 bronze badges

I set linebreak-style to 0, but not working.

rules: {
    "linebreak-style": 0,
 },

so then I found out need to change every files from «CRLF» to «LF», and that take lots time.

When cloning a project, Git automatically converts LF to CRLF which causes the error.

git config --global core.autocrlf false

To avoid this automatic conversion, run “git config —global core.autocrlf false” in Git Bash before cloning the project.

answered May 31, 2022 at 1:43

crazwade's user avatar

crazwadecrazwade

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1

In my case (vue.js project, created using vue-cli) the lint problem Expected linebreaks to be 'LF' but found 'CRLF' linebreak-style was related to Prettier.
From version >= 2 Prettier replace all line endings with «lf»: https://prettier.io/docs/en/options.html#end-of-line

Since I’m using Windows to develop I set these 3 (git, eslint, prettier) configuration to avoid line endings problems:

  1. Git: I set git config --global core.autocrlf true
  2. eslint: in .eslintrc.js file I configured:
      module.exports = {
      rules: {
        'linebreak-style': ['error', 'windows'],
      },
    };
  1. prettier: And finally in prettier.config.js:
module.exports = {
    endOfLine: "crlf",
};

answered Jan 5, 2022 at 14:05

matteogll's user avatar

matteogllmatteogll

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3

The "endOfLine": "auto" setting in .eslintrc.js and .prettierrc files worked for me.

File .eslintrc.js should have:

rules: {
    /*  ...the other code is omitted for the brevity */
    'arrow-body-style': [1, 'as-needed'],
    'import/extensions': 'off',
    'prettier/prettier': [
        'error',
        {
            semi: false,
            singleQuote: true,
            useTabs: true,
            endOfLine: 'auto', /* this setting should be included */
        },
    ],

File .prettierrc should have:

{
    "semi": false,
    "trailingComma": "all",
    "singleQuote": true,
    "useTabs": true,
    "tabWidth": 2,
    "endOfLine": "auto" /* this setting should be included */
}

answered Jul 11, 2022 at 4:14

StepUp's user avatar

StepUpStepUp

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Tips: Make sure you have installed Git as the picture if not do that first.
You can take other features as default, You can choose visual studio code as the default editor. helps you a lot later.

enter image description here

Windows Users:
Uninstall Visual Studio Code then reinstalled it again and EditorConfig should work just fine.

NOTE => Uninstalling Visual Studio Code still leaves the old settings and extensions! remove Visual Studio Code on Windows completely

Uninstalled Visual Studio

  1. This PC > Local disck (C) Users > CurrentUser > AppData > Local > Programs > Microsoft VS Code
    1. Unins000.exe or Uninstall it from conrol panel
  2. This PC > Local disck (C) Users > CurrentUser > AppData > Local > Roaming
    1. Code => Folder should be delete it
  3. This PC > Local disck (C) Users > CurrentUser >
    1. .vscode => Folder should be delete it
  4. reinstall vs code it should work now.

answered Feb 25, 2022 at 15:25

Rashid Qazizada's user avatar

I just want to add the easier way. On the bottom right of VScode click the LF or CRLF to toggle between them. See Photo

answered Mar 20, 2022 at 19:33

user2098296's user avatar

0

for me, I fixed the issue by setting «endOfLine»: «lf» in the.prettierrc file.

answered Jul 23, 2022 at 12:35

AYOMIDE ADEBAYO's user avatar

1

Try using the linter’s —fix flag to resolve the issue.

eslint filePath —fix

answered Apr 23, 2021 at 9:40

user8818954's user avatar

In my case, the LF rule was set in a file read by the maven-checkstyle-plugin in pom.xml.
The ${skipCheckstyle} environment variable was not set.
This way I skipped the whole check.

<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<configuration>
    <skip>${skipCheckstyle}</skip>
    <configLocation>${top.dir}/src/main/config/checkstyle/checker.xml</configLocation>

answered Jan 10 at 16:54

Alex's user avatar

AlexAlex

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run: $ git config --global core.autocrlf false

delete repo and clone again

answered Apr 18 at 8:51

ofir_aghai's user avatar

ofir_aghaiofir_aghai

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Правило ESLint linebreak-style обеспечивает единообразный стиль разрыва строки. Это может быть полезно для команд, которые хотят гарантировать, что весь их код отформатирован единообразным образом, независимо от операционной системы, в которой он разрабатывается.

У правила есть два варианта:

  • unix (default): принудительное использование окончаний строк Unix: \n для LF.

  • windows : принудительное использование окончаний строк Windows: \r\n для CRLF.

Чтобы настроить правило, вы можете добавить в файл .eslintrc.js следующее:

{
  "rules": {
    "linebreak-style": ["error", "unix"]
  }
}

Это приведет к тому, что ESLint сообщит об ошибке, если обнаружит окончания строк, не соответствующие указанному стилю.

Вы также можете полностью отключить правило, установив для него значение false . Например:

{
  "rules": {
    "linebreak-style": "off"
  }
}

Почему так важно иметь единый стиль переноса строк?

Есть несколько причин, по которым важно иметь последовательный стиль разрыва строки:

  • Это делает код более читабельным. Когда все строки в базе кода отформатированы одинаково, разработчикам легче читать и понимать код.
  • Это снижает риск ошибок. Когда разработчики используют разные стили разрыва строк, это может привести к таким ошибкам, как проблемы различий и конфликты слияний.
  • Это улучшает согласованность кодовой базы. Последовательный стиль разрыва строк делает кодовую базу более отточенной и профессиональной.

Как исправить ошибки стиля разрыва строки в ESLint

Если ESLint сообщает об ошибке стиля разрыва строки, ее можно исправить, изменив окончание строки в соответствии с указанным стилем. Вы можете сделать это с помощью текстового редактора или инструмента command-line, такого как sed или awk .

Например, если вы используете стиль разрыва строки Unix и ESLint сообщает об ошибке в следующей строке:

function myFunction() {
  // Эта строка имеет окончание строки Windows.
  console.log("Hello, world!");
}

Вы можете исправить ошибку, изменив строку, заканчивающуюся на \n , с помощью текстового редактора или инструмента command-line. Например, чтобы использовать sed для изменения окончания строки, вы должны выполнить следующую команду:

sed -i 's/\r//' myFunction.js

Это заменит все окончания строк CRLF в файле myFunction.js на окончания строк LF.

После устранения ошибки стиля разрыва строки вы можете снова запустить ESLint, чтобы убедиться, что ошибка устранена.

Чтобы отключить правило linebreak-style ESLint, вы можете отредактировать файл .eslintrc .

Если вы используете конфигурацию JavaScript ESLint, вы можете добавить в файл .eslintrc.js следующее:

module.exports = {
  rules: {
    'linebreak-style': 'off',
  },
};

Если вы используете конфигурацию JSON ESLint, вы можете добавить в файл .eslintrc или .eslintrc.json следующее:

{
  "rules": {
    "linebreak-style": "off"
  }
}

После внесения этих изменений сохраните файл .eslintrc и перезапустите редактор кода или сервер разработки.

Note
Отключать правило linebreak-style ESLint не рекомендуется, так как это может привести к несогласованным окончаниям строк в вашей кодовой базе. Это может затруднить сотрудничество с другими разработчиками, а также привести к ошибкам в некотором программном обеспечении.

Если у вас возникли проблемы с правилом linebreak-style ESLint, лучше попытаться устранить основную проблему, например настроить систему контроля версий на использование правильных окончаний строк.

How to Fix eslint linebreak style error on Visual Studio Code Windows? (Expected linebreaks to be ‘crlf’ but found ‘lf’)

September 5, 2019

eslint, git, javascript

Suddenly, you run npm run lint and it shows quite a lot of linebreak-style errors. Your Visual Studio Code suddenly does not show you the lint errors as well. You probably run npm run lint — –fix but that will touch tons of the files with linebreaks changed from LF to CRLF – probably not something you want.

How to Fix the eslint linbreak style errors?

First, you run the following command to verify that this fix is good for you:

1
git config -l | grep autocrlf
git config -l | grep autocrlf

What you will see is core.autocrlf=false which isn’t right. You can fix this by:

1
git config --add core.autocrlf true
git config --add core.autocrlf true

Then, you need to clean the cache files of your git repository, you can do this by the following two commands (make sure you stage or commit your changes):

1
2
git rm --cached -r .
git reset --hard
git rm --cached -r .
git reset --hard

Then, it is probably a good idea to re-install your eslint extension (plugin) in your VS code and restart your Visual Studio Code IDE if necessary.

You’ll see the eslint pointing out unnecessary spaces or missing semicolons in your Javascript code again!

–EOF (The Ultimate Computing & Technology Blog) —

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