.eslintrc.js

module.exports = {
  env: {
    es6: true,
    node: true,
  },
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:prettier/recommended',
  ],
  parser: '@typescript-eslint/parser',
  plugins: ['@typescript-eslint', 'prettier', 'import'],
  root: true,
  rules: {
    '@typescript-eslint/explicit-function-return-type': 'off',
    '@typescript-eslint/no-unused-vars': [
      'error',
      {
        args: 'after-used',
        argsIgnorePattern: '^_',
        ignoreRestSiblings: false,
        vars: 'all',
      },
    ],
    'import/order': [
      'error',
      {
        alphabetize: { caseInsensitive: true, order: 'asc' },
        groups: [
          'builtin',
          'external',
          ['internal', 'parent', 'sibling', 'index'],
        ],
        'newlines-between': 'always',
      },
    ],
    'max-params': ['error', 5],
    'no-console': ['error', { allow: ['warn', 'error'] }],
    'no-param-reassign': 'error',
    'no-unused-vars': 'off',
    'no-var': 'error',
    'prefer-arrow-callback': ['error', { allowNamedFunctions: true }],
    'sort-keys': 'error',
  },
};