.eslintrc.js

module.exports = {
  root: true,
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:react/recommended',
    'plugin:sonarjs/recommended',
    'prettier',
  ],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: 'tsconfig.json',
    sourceType: 'module',
  },
  plugins: ['@typescript-eslint', 'react', 'react-hooks', 'import', 'functional', 'sonarjs'],
  rules: {
    'no-case-declarations': 'off',
    'no-inner-declarations': 'off',
    'prefer-const': 'error',
    curly: 'error',
    'spaced-comment': ['error', 'always', { block: { balanced: true } }],
    radix: 'error',
    'one-var': ['error', 'never'],
    'object-shorthand': 'error',
    'no-var': 'error',
    'no-param-reassign': 'error',
    'no-underscore-dangle': 'error',
    'no-undef-init': 'error',
    'no-throw-literal': 'error',
    'no-new-wrappers': 'error',
    'no-eval': 'error',
    'no-console': 0, // TODO: to restore after development ['error', { allow: ['error', 'warn'] }],
    'no-caller': 'error',
    'no-bitwise': 'error',
    eqeqeq: ['error', 'smart'],
    'max-classes-per-file': ['error', 1],
    'guard-for-in': 'error',
    complexity: 'error',
    'arrow-body-style': 'error',
    'import/order': 'error',
    '@typescript-eslint/no-unused-vars': 'off',
    // Enable if we want to enforce the return type for all the functions
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    '@typescript-eslint/no-inferrable-types': 'off',
    // TODO: added for compatibility. Removing this line we have to remove all the any usage in the code
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/array-type': [
      'error',
      {
        default: 'generic',
      },
    ],
    '@typescript-eslint/await-thenable': 'error',
    '@typescript-eslint/consistent-type-assertions': 'error',
    '@typescript-eslint/dot-notation': 'error',
    '@typescript-eslint/member-delimiter-style': [
      'error',
      {
        multiline: {
          delimiter: 'semi',
          requireLast: true,
        },
        singleline: {
          delimiter: 'semi',
          requireLast: false,
        },
      },
    ],
    '@typescript-eslint/no-floating-promises': 'error',
    'no-unused-expressions': 'off',
    '@typescript-eslint/no-unused-expressions': ['error'],
    '@typescript-eslint/prefer-function-type': 'error',
    '@typescript-eslint/restrict-plus-operands': 'error',
    semi: 'off',
    '@typescript-eslint/semi': ['error'],
    '@typescript-eslint/unified-signatures': 'error',
    'react/prop-types': 'off',
    'react/display-name': 'off',
    'react/jsx-key': 'error',
    'react/jsx-no-bind': ['error', { allowArrowFunctions: true }],
    'react-hooks/rules-of-hooks': 'warn',
    'functional/no-let': 'error',
    'functional/immutable-data': 'error',
    'sonarjs/no-small-switch': 'off',
    'sonarjs/no-duplicate-string': 'off',
    'sonarjs/no-nested-template-literals': 'warn',
    '@typescript-eslint/no-empty-function': ['error', { allow: ['arrowFunctions'] }],
    'react/jsx-uses-react': 'off',
    'react/react-in-jsx-scope': 'off',
  },
  overrides: [
    {
      files: ['**/*.test.*'],
      rules: {
        '@typescript-eslint/no-non-null-assertion': 'off',
      },
    },
  ],
  settings: {
    react: {
      version: 'detect',
    },
  },
};