The eslint-plugin-unicorn is a powerful tool for JavaScript developers which houses more than 100 powerful, versatile and easy-to-use ESLint rules. Optimized for code quality and internal consistency, these rules extend the core ESLint set with a range of extras that enforce JavaScript best practices and aid in code optimization. Simply put, the eslint-plugin-unicorn is an essential tool for JavaScript developers who aim to write cleaner code, maintain high performance and ensure a steadfast fidelity to best practices.
Using eslint-plugin-unicorn is straightforward and simple. First, you need to install the package using npm:
npm install --save-dev eslint eslint-plugin-unicorn
Then, you can either use a preset configuration or configure each rule manually within your project's package.json
file. If you're managing the rules without a preset, make sure to include the same env
and parserOptions
configuration as shown in the example below:
{
"name": "my-awesome-project",
"eslintConfig": {
"env": {
"es2024": true
},
"parserOptions": {
"ecmaVersion": "latest",
"sourceType": "module"
},
"plugins": [
"unicorn"
],
"rules": {
"unicorn/better-regex": "error",
"unicorn/β¦": "error"
}
}
}
In this configuration example, the project uses the rules "unicorn/better-regex" and "unicorn/β¦" with an error level of enforcement (meaning violations will cause the linter to throw an error).
The documentation for eslint-plugin-unicorn can be found directly in the project's GitHub repository at https://github.com/sindresorhus/eslint-plugin-unicorn. This documentation provides an exhaustive list of the rules provided by eslint-plugin-unicorn, along with details about what each rule does, how to configure it, and some examples of what constitutes a violation. Each rule has its own document with specific examples, justifications and suggestions related to its use.