.eslintrc.js

module.exports = {
  root: true,
  env: {
    node: true,
    jest: true,
  },
  parserOptions: {
    project: ['./tsconfig.json'],
  },
  parser: '@typescript-eslint/parser',
  plugins: ['@typescript-eslint'],
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:@typescript-eslint/recommended',
    'prettier',
    'plugin:prettier/recommended',
  ],
  rules: {
    '@typescript-eslint/consistent-type-definitions': 'error',
    '@typescript-eslint/no-use-before-define': 'error',
    '@typescript-eslint/dot-notation': 'warn',
    '@typescript-eslint/explicit-function-return-type': [
      'error',
      {
        allowConciseArrowFunctionExpressionsStartingWithVoid: true,
      },
    ],
    '@typescript-eslint/explicit-member-accessibility': [
      'error',
      {
        overrides: {
          constructors: 'off',
        },
      },
    ],
    '@typescript-eslint/explicit-module-boundary-types': 'warn',
    '@typescript-eslint/no-inferrable-types': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
  },
};