.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser',
  extends: [
    'plugin:import/errors',
    'plugin:import/warnings',
    'plugin:import/typescript',
    'plugin:@typescript-eslint/recommended',
    'plugin:prettier/recommended',
  ],
  parserOptions: {
    ecmaVersion: 2020,
    sourceType: 'module',
  },
  rules: {
    'no-fallthrough': 2,
    // https://github.com/benmosher/eslint-plugin-import/blob/HEAD/docs/rules/order.md
    'import/order': [
      'error',
      {
        groups: ['builtin', 'external', 'internal', 'parent', 'sibling', 'index'],
        'newlines-between': 'always-and-inside-groups',
      },
    ],
    'import/namespace': 0,
    'import/named': 0,
    'import/no-extraneous-dependencies': 1,
    '@typescript-eslint/no-var-requires': 'off',
    '@typescript-eslint/explicit-member-accessibility': 'off',
    '@typescript-eslint/explicit-function-return-type': 'off',
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-non-null-assertion': 'off',
    '@typescript-eslint/no-unused-vars': [
      process.env.NODE_ENV === 'production' ? 2 : 1,
      {
        vars: 'all',
        args: 'after-used',
        ignoreRestSiblings: true,
        caughtErrors: 'none',
        varsIgnorePattern: '^_',
        argsIgnorePattern: '^_',
      },
    ],
  },
};