.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser',
  plugins: ['jest', '@typescript-eslint', 'simple-import-sort', 'prettier'],
  extends: [
    'eslint:recommended',
    'plugin:jest/recommended',
    'plugin:@typescript-eslint/recommended',
    'prettier',
  ],
  env: {
    node: true,
    es6: true,
  },
  root: true,
  rules: {
    'prettier/prettier': 'error',
    '@typescript-eslint/no-unused-vars': [
      'error',
      {
        vars: 'all',
        args: 'none',
        argsIgnorePattern: '^_',
        varsIgnorePattern: '^_',
        ignoreRestSiblings: true,
      },
    ],
    'prefer-destructuring': [
      'error',
      {
        array: false,
        object: true,
      },
    ],
    'prefer-const': 'error',
    'prefer-template': 'error',
    'simple-import-sort/imports': 'error',
    'simple-import-sort/exports': 'error',

    'no-underscore-dangle': 'off',
    'no-param-reassign': 'off',
    'no-console': 'off',
    'no-warning-comments': ['warn', { terms: ['fixme'], location: 'start' }],
    'no-unused-vars': 'off', // replaced by @typescript-eslint/no-unused-vars
    '@typescript-eslint/no-empty-function': 'off',
    'jest/valid-title': 'off',

    // FIXME: enable
    '@typescript-eslint/explicit-function-return-type': 'off',
    '@typescript-eslint/no-use-before-define': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    'jest/expect-expect': [
      'error',
      {
        assertFunctionNames: ['expect', 'expectTransformation'],
      },
    ],
  },
}