eslint-config-mourner

A great ESLint config with sensible defaults that I use in all my JavaScript projects.

It is meant to be strict, enforcing as many useful rules and conventions as possible to keep the code clean, elegant and consistent across projects.

The rules are easy to follow, so this is a good starting place for new projects, while being easy to disable on a case by case basis for existing projects if you want to enforce and fix them gradually or have justified exceptions.

Install

To use it in your project, run:

npm install --save-dev eslint eslint-config-mourner

Then add a following eslint.config.js file in the repo root (assuming the package is type: "module"):

import config from "eslint-config-mourner";

export default [
    ...config,

    // your overrides if needed
    {
        rules: {
            "camelcase": "warn"
        }
    }
];

Finally, add eslint to a package.json script:

"scripts": {
  "lint": "eslint index.js test/test*.js",
  "pretest": "npm run lint"
}

Now run npm run lint and enjoy all the errors! :)

Automatic fixes

To make things easier, you can run eslint with --fix option that automatically fixes all simple errors like indentation and quotes for you.