.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser',
  parserOptions: {
    // 'project': './tsconfig.json', // Required to have rules that rely on Types.
    // 'tsconfigRootDir': './'
    sourceType: 'module',
    ecmaVersion: 8,
    ecmaFeatures: {
      experimentalObjectRestSpread: true,
      jsx: true,
    },
  },
  extends: [
    'plugin:@typescript-eslint/recommended', // Out of the box Typescript rules
    'plugin:jest/recommended',
    'standard', // Out of the box StandardJS rules
    'standard-react',
    'standard-jsx',
    'prettier',
  ],
  plugins: [
    '@typescript-eslint', // Let's us override rules below.
    'prettier',
  ],
  rules: {
    '@typescript-eslint/no-use-before-define': 'off', // Allows us to hoist variables and functions which I am a fan of, functions not variables that is.
    '@typescript-eslint/no-explicit-any': 'off', // Too strict for my case, sometimes I need an any type
    '@typescript-eslint/interface-name-prefix': [
      2,
      {
        prefixWithI: 'always',
      },
    ],
    '@typescript-eslint/member-delimiter-style': [
      'error',
      {
        // Prevents us from using any delimiter for interface properties.
        multiline: {
          delimiter: 'none',
          requireLast: false,
        },
        singleline: {
          delimiter: 'comma',
          requireLast: false,
        },
      },
    ],
    '@typescript-eslint/indent': 'off', // This is the job of StandardJS, they are competing rules so we turn off the Typescript one.
    // 'no-unused-vars': 'off', // On the fence about using this one, sometimes we import a package that is never used directly.
    'node/no-unsupported-features/es-syntax': 'off', // Allows us to use Import and Export keywords.
    'prettier/prettier': [
      'error',
      {
        semi: false,
        singleQuote: true,
        trailingComma: 'es5',
      },
    ],
    // 'sort-imports': [
    //   'error',
    //   {
    //     ignoreCase: false,
    //     ignoreDeclarationSort: false,
    //     ignoreMemberSort: false,
    //     memberSyntaxSortOrder: ['all', 'single', 'multiple', 'none'],
    //   },
    // ],
  },
}