feat: add eslint-plugin-sonarjs

[zanminkian]

This plugin looks great for a better code quality. Thought?

[phoenix-oes]

I just went through this myself. Here's how you can add it yourself for your own projects:

At the top, use FlatCompat

import { FlatCompat } from '@eslint/eslintrc';

const compat = new FlatCompat();

At the bottom, beneath all other configs, add one new legacy config:

  // Legacy config
  ...compat.config({
    extends: [
      'plugin:sonarjs/recommended-legacy',
    ],
    rules: {
      'sonarjs/todo-tag': 'warn',
      'sonarjs/no-commented-code': 'warn',
    },
  }),
);

Maybe not ideal, but I also like being able to quickly toggle it off for certain situations.

[EugenGedroyc]

The flat configuration is ready now

{
  name: 'sonar',
  ...pluginSonar.configs.recommended
},