.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2017: true,
    node: true,
  },
  parser: '@typescript-eslint/parser',
  parserOptions: {
    sourceType: 'module',
    project: './tsconfig.json',
  },
  plugins: ['@typescript-eslint', 'prettier'],
  extends: [
    'airbnb-typescript',
    'prettier',
    'plugin:@typescript-eslint/eslint-recommended',
  ],
  rules: {
    semi: ['error', 'always'],
    'comma-dangle': ['error', 'always-multiline'],
    'import/order': [
      'error',
      {
        groups: ['builtin', 'external', 'parent', 'sibling', 'index'],
        'newlines-between': 'always',
      },
    ],
    'import/prefer-default-export': 'off',
    '@typescript-eslint/no-unused-vars': [
      'error',
      {
        argsIgnorePattern: '^_',
      },
    ],
    'max-len': ['error', 120],
    'prettier/prettier': [
      'error',
      {
        endOfLine: 'auto',
      },
    ],
  },
};