.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: 'tsconfig.json',
    tsconfigRootDir: __dirname,
    sourceType: 'module',
  },
  plugins: ['@typescript-eslint/eslint-plugin'],
  extends: ['plugin:@typescript-eslint/recommended', 'plugin:prettier/recommended'],
  root: true,
  env: {
    node: true,
    jest: true,
  },
  ignorePatterns: ['.eslintrc.js'],
  rules: {
    '@typescript-eslint/explicit-function-return-type': [
      'warn',
      {
        allowExpressions: true,
        allowHigherOrderFunctions: true,
        allowConciseArrowFunctionExpressionsStartingWithVoid: true,
      },
    ],
    '@typescript-eslint/explicit-member-accessibility': [
      'warn',
      {
        accessibility: 'explicit',
        overrides: {
          constructors: 'no-public',
          properties: 'off',
          parameterProperties: 'explicit',
          methods: 'explicit',
          accessors: 'explicit',
        },
      },
    ],
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-unused-vars': ['warn'],
    'no-console': ['warn'],
    'prettier/prettier': ['warn'],
  },
}