.eslintrc.js

module.exports = {
  env: {
    node: true,
    jest: true,
  },
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaVersion: 'latest',
    sourceType: 'module',
  },
  plugins: [
    '@typescript-eslint',
    'jest',
  ],
  extends: [
    'airbnb',
    'plugin:@typescript-eslint/recommended',
    'plugin:jest/recommended',
  ],
  root: true,

  settings: {
    'import/resolver': {
      node: {
        extensions: ['.js', '.ts'],
      },
    },
  },
  rules: {
    indent: ['error', 2],
    'no-trailing-spaces': 'error',
    curly: 'error',
    'brace-style': 'error',
    'no-multi-spaces': 'error',
    'space-infix-ops': 'error',
    'space-unary-ops': 'error',
    'no-whitespace-before-property': 'error',
    'func-call-spacing': 'error',
    'space-before-blocks': 'error',
    'keyword-spacing': ['error', { before: true, after: true }],
    'comma-spacing': ['error', { before: false, after: true }],
    'comma-style': ['error', 'last'],
    'comma-dangle': ['error', 'always-multiline'],
    'space-in-parens': ['error', 'never'],
    'block-spacing': 'error',
    'array-bracket-spacing': ['error', 'never'],
    'object-curly-spacing': ['error', 'always'],
    'key-spacing': ['error', { mode: 'strict' }],
    'arrow-spacing': ['error', { before: true, after: true }],
    'class-methods-use-this': 'off',
    'no-shadow': 'off',
    'no-plusplus': 'off',
    'no-useless-constructor': 'off',
    'import/prefer-default-export': 'off',
    'consistent-return': 'off',
    'no-unreachable-loop': 'off',
    'no-empty-function': 'off',
    'max-classes-per-file': 'off',
    'no-cond-assign': 'off',
    'import/extensions': ['error', 'ignorePackages', {
      js: 'never',
      ts: 'never',
    }],
    '@typescript-eslint/no-unused-vars': 'off',
    '@typescript-eslint/interface-name-prefix': 'off',
    '@typescript-eslint/explicit-function-return-type': 'off',
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    'no-param-reassign': 'off',
  },
};