Contents

• About
• Features
• Installation
• Documentation
  • Tree
  • Import
  • Methods
  • Recommended use
  • Types
• Links
  • Discord
  • Telegram
  • Twitter
  • GitHub
• License

About

Strict ESLint presets for modern TypeScript projects.

Features

• Enforces type safety
• Prohibits potentially unsafe patterns
• Encourages modern syntax
• Encourages the use of arrow functions
• Encourages the use of try/catch
• Bans var and warns about proper use of const and let
• Disallows interfaces, using only types
• Requires explicit readonly and accessibility modifiers in classes
• ...and much more!

Installation

You can install it as follows.

ⓘ Note

During installation, these packages are installed automatically: @eslint/js, @types/node, eslint, jiti, typescript, and typescript-eslint.

Therefore, you do not need to install these packages separately. If they are already listed in your project's dependencies, keeping them is unnecessary and they can be safely removed.

# NPM
npm add rulint

# PNPM
pnpm add rulint

# Yarn
yarn add rulint

# Bun
bun add rulint

# Deno
deno add rulint

Documentation

Tree

Briefly as follows.

rulint
│
├── rulint(options?)
│
└── type RulintOptions

Import

Briefly as follows.

📁 ./eslint.config.ts

import { rulint } from 'rulint';

export default rulint();

Methods

rulint(options?)

Get the ESLint configuration generated by Rulint.

Parameter	Type	Default	Description
options?	RulintOptions	RulintOptionsDefault	Rulint options.

returns ESLintConfig[]

Example:

export default rulint();

Recommended use

Suggested uses are as follows. We recommend using Prettier.

📁 ./eslint.config.ts

import { rulint } from 'rulint';

export default rulint();

📁 ./tsconfig.json

{
  "compilerOptions": {
    "strict": true,
    "declaration": true,
    "esModuleInterop": true,

    "outDir": "./dist",
    "target": "ESNext",
    "module": "ESNext",
    "moduleResolution": "bundler",
    "lib": ["DOM", "ESNext"],

    "typeRoots": ["./types", "./node_modules/@types"]
  }
}

📁 ./.prettierrc.json

{
  "semi": true,
  "singleQuote": true,

  "printWidth": 9999,
  "tabWidth": 2,

  "trailingComma": "none"
}

Types

Type
ESLintConfig
RulintOptions

Links

• Discord
• Telegram
• Twitter
• GitHub

License

MIT License

Copyright (c) 2025 Keift

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.