.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser',
  plugins: ['@typescript-eslint', 'prettier'],
  env: {
    es6: true,
    node: true,
    browser: true,
  },
  root: true,
  extends: [
    'airbnb-base',
    'plugin:@typescript-eslint/recommended',
    'prettier',
    'prettier/@typescript-eslint',
  ],
  rules: {
    'linebreak-style': ['error', 'unix'],
    'arrow-parens': ['error', 'as-needed'],
    'no-param-reassign': ['error', { props: false }],
    'func-style': ['error', 'declaration', { allowArrowFunctions: true }],
    'no-use-before-define': ['error', { functions: false }],
    '@typescript-eslint/no-use-before-define': ['error', { functions: false }],
    'import/prefer-default-export': 'off',
    'lines-between-class-members': [
      'error',
      'always',
      { exceptAfterSingleLine: true },
    ],
    'import/extensions': [
      'error',
      'always',
      {
        js: 'ignorePackages',
        ts: 'never',
      },
    ],
  },
  settings: {
    'import/resolver': {
      node: {
        extensions: ['.ts', '.js'],
      },
    },
  },
};