.eslintrc.js

module.exports = {
  root: true,
  extends: [
    // https://github.com/airbnb/javascript/tree/master/packages/eslint-config-airbnb
    'airbnb',
    // https://github.com/iamturns/eslint-config-airbnb-typescript
    'airbnb-typescript',
    // https://github.com/prettier/eslint-plugin-prettier#readme
    'plugin:prettier/recommended',
  ],
  // https://github.com/typescript-eslint/typescript-eslint/tree/master/packages/eslint-plugin
  plugins: ['@typescript-eslint'],
  parser: '@typescript-eslint/parser',
  env: {
    browser: true,
    commonjs: true,
    es6: true,
    node: true,
  },
  parserOptions: {
    ecmaVersion: 2020,
    sourceType: 'module',
    tsconfigRootDir: __dirname,
    project: ['tsconfig.eslint.json'],
  },
  rules: {
    'import/extensions': 'off',
    '@typescript-eslint/no-unused-vars': 'warn',
    '@typescript-eslint/ban-ts-comment': 'off',
    '@typescript-eslint/no-empty-function': 'off',
    '@typescript-eslint/ban-types': [
      'error',
      {
        types: {
          '{}': false,
        },
      },
    ],
    'import/prefer-default-export': 'off',
    'class-methods-use-this': 'off',
    'no-underscore-dangle': 'off',
    'no-param-reassign': 'warn',
  },
};