.eslintrc.js

module.exports = {
  root: true, // Don't look outside this project for inherited configs
  parser: '@typescript-eslint/parser', // Specifies the ESLint parser
  parserOptions: {
    ecmaVersion: 2018, // Allows for the parsing of modern ECMAScript features
    sourceType: 'module', // Allows for the use of imports
    project: './tsconfig.json',
    ecmaFeatures: {
      jsx: true,
    },
  },
  extends: [
    'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
  ],
  settings: {
    react: {
      version: 'detect',
    },
  },
  rules: {
    'indent': 'off',
    '@typescript-eslint/indent': [
      'error',
      2,
      {
        'SwitchCase': 1
      }
    ],
    'quotes': [
      'error',
      'single',
      {
        'avoidEscape': true,
        'allowTemplateLiterals': true
      }
    ],
    '@typescript-eslint/no-parameter-properties': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-use-before-define': [
      'error',
      {
        functions: false,
        typedefs: false,
        classes: false,
      },
    ],
    '@typescript-eslint/no-unused-vars': [
      'error',
      {
        ignoreRestSiblings: true,
        argsIgnorePattern: '^_',
      },
    ],
    '@typescript-eslint/explicit-function-return-type': [
      'warn',
      {
        allowExpressions: true,
        allowTypedFunctionExpressions: true,
      },
    ],
    '@typescript-eslint/no-object-literal-type-assertion': 'off',
    '@typescript-eslint/interface-name-prefix': 'off',
    '@typescript-eslint/no-non-null-assertion': 'off', // This is necessary for Map.has()/get()!
    '@typescript-eslint/no-inferrable-types': 'off',
    'no-var': 'error',
    'prefer-const': 'error',
    'no-trailing-spaces': 'error',

    'comma-dangle': [
      'warn',
      {
        arrays: 'always-multiline',
        objects: 'always-multiline',
        imports: 'always-multiline',
        exports: 'always-multiline',
        functions: 'always-multiline',
      }
    ],

    'semi': ['warn', 'always'],

    'no-restricted-syntax': [
      'warn',
      {
        selector: 'CallExpression[callee.name="setTimeout"]',
        message: 'setTimeout should not be used. Use adapter.setTimeout instead.'
      },
      {
        selector: 'CallExpression[callee.name="setInterval"]',
        message: 'setInterval should not be used. Use adapter.setInterval instead.'
      }
    ]
  },
  overrides: [
    {
      files: ['*.test.ts', '*.tsx'],
      rules: {
        '@typescript-eslint/explicit-function-return-type': 'off',
      },
    },
  ],
};