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https://github.com/kellerkinderde/eslint-config

Kellerkinder ESLint configuration
https://github.com/kellerkinderde/eslint-config

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Kellerkinder ESLint configuration

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# Kellerkinder ESLint Config

[![npm version](https://badge.fury.io/js/%40kellerkinder%2Feslint-config.svg)](https://badge.fury.io/js/%40kellerkinder%2Feslint-config)

This package provides the Kellerkinder ESLint configuration for JavaScript, TypeScript and Vue 3. It is based on the [AirBnB Configuration](https://github.com/airbnb/javascript/tree/master/packages/eslint-config-airbnb-base)
with slight alterations.

## Requirements
This config has been developed and tested with the following requirements:
* NodeJS >= 12
* ESLint >= 7.2.0

## Installation
In order to use this configuration, run the following scripts in your NodeJS project:

```bash
npm i -D eslint @kellerkinder/eslint-config
```

## Usage
You can use this configuration by creating an `.eslintrc.json` inside your
project's root directory that is extending this configuration.

```json
{
"extends": "@kellerkinder/eslint-config"
}
```

You can now execute eslint by running the following script:

```bash
npx eslint src/
```

The `src/` directory can be replaced with the directory or file you want to lint.

If you want ESLint to try to fix the errors it found, execute the following command:

```bash
npx eslint src/ --fix
```

Alternatively, refer to your IDE's documentation to find out, if and how ESLint
is integrated.

### Babel Configuration
If you are using babel in your project, you can provide ESLint
with your own configuration file, by adding this section to your
ESLint config:

```json
{
"parserOptions": {
"babelOptions": {
"configFile": "path/to/your/.babelrc"
}
}
}
```

By default, this configuration comes with babel support for
[class properties](https://babeljs.io/docs/en/babel-plugin-proposal-class-properties).
So unless other babel features are required, you can safely omit this part of the configuration.

### TypeScript
If you are working with a TypeScript codebase, you want to change your `.eslintrc.json` to extend
the `@kellerkinder/eslint-config/typescript` config instead, making it look like this:

```json
{
"extends": "@kellerkinder/eslint-config/typescript"
}
```

This configuration contains all the rules from the default configuration and extends it
by some TypeScript-specific rules.

## Vue 3
If you are working with a Vue 3 application, you want to change your `.eslintrc.json` to extend
the `@kellerkinder/eslint-config/vue` config instead, making it look like this:

```json
{
"extends": "@kellerkinder/eslint-config/vue"
}
```

Using the Vue 3 configuration automatically assumes that you are using TypeScript as well.

## Testing
This project features basic configuration tests using Vitest.
Tests are automatically execute on push and before publishing.
To execute the tests manually, use the following command:

```bash
npm test
```

## Troubleshooting

### `Linter` is not a constructor
This error is known to be caused by an empty `.eslintignore` file.
To solve this, either make sure that your `.eslintignore` contains at
least one entry or is removed entirely.

## Publishing
In order to publish a new version of this package on npm, follow
these steps:

1. Bump the version field inside the [package.json](package.json)
2. Create an entry inside the [CHANGELOG.md](CHANGELOG.md)
3. Push your code to `main`
4. Tag your commit with the respective version
5. Create a Github release

Now, GitHub Actions will build and publish the new version on npm.

## Changelog
This project adheres to [Semantic Versioning](https://semver.org/).
Please refer to the [CHANGELOG.md](CHANGELOG.md) for detailed changes and
migration instructions.

## License
MIT