feat: initial import from base-configs

README.md

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+# @ivuorinen/eslint-config <!-- omit in toc -->
+
+[![npm package][npm-badge]][npm-link] [![license MIT][license-badge]][license-link] [![ivuorinen's Code Style][style-badge]][style-link]
+
+> ivuorinen's shareable configuration for [`ESLint`][eslint-link].
+
+## Table of Contents <!-- omit in toc -->
+
+- [Installation](#installation)
+- [Available Configurations](#available-configurations)
+  - [Jest](#jest)
+- [Documentations](#documentations)
+- [Contributing](#contributing)
+- [Changelog](#changelog)
+- [License](#license)
+
+## Installation
+
+Install `this config` as a _`devDependencies`_:
+
+```sh
+# npm
+npm install @ivuorinen/eslint-config --save-dev
+
+# Yarn
+yarn add @ivuorinen/eslint-config --dev
+```
+
+After installing it, a _`eslint.config.mjs`_ file will be created automatically in the project's root folder with the following configuration:
+
+```json
+{
+  "extends": ["@ivuorinen"]
+}
+```
+
+## Available Configurations
+
+### Jest
+
+Adds specific rules for the [`Jest`][jest-link] testing framework.
+
+```json
+{
+  "extends": ["@ivuorinen/eslint-config/jest"]
+}
+```
+
+## Documentations
+
+Read the [ESLint docs][eslint-docs-link] for more information.
+
+## Contributing
+
+If you are interested in helping contribute, please take a look at our [contribution guidelines][contributing-link] and open an [issue][issue-link] or [pull request][pull-request-link].
+
+## Changelog
+
+See [CHANGELOG][changelog-link] for a human-readable history of changes.
+
+## License
+
+Distributed under the MIT License. See [LICENSE][license-link] for more information.
+
+[changelog-link]: ./CHANGELOG.md
+[eslint-docs-link]: https://eslint.org
+[eslint-link]: https://github.com/eslint/eslint
+[contributing-link]: https://github.com/ivuorinen/.github/blob/main/CONTRIBUTING.md
+[issue-link]: https://github.com/ivuorinen/base-configs-eslint/issues
+[license-badge]: https://img.shields.io/github/license/ivuorinen/base-configs-eslint?style=flat-square&labelColor=292a44&color=663399
+[license-link]: ./LICENSE.md
+[npm-badge]: https://img.shields.io/npm/v/@ivuorinen/eslint-config?style=flat-square&labelColor=292a44&color=663399
+[npm-link]: https://www.npmjs.com/package/@ivuorinen/eslint-config
+[pull-request-link]: https://github.com/ivuorinen/base-configs-eslint/pulls
+[style-badge]: https://img.shields.io/badge/code_style-ivuorinen%E2%80%99s-663399.svg?labelColor=292a44&style=flat-square
+[style-link]: https://github.com/ivuorinen/base-configs-eslint
+[jest-link]: https://jestjs.io