.eslintrc.js

const { builtinModules } = require('module');

const ALLOWED_NODE_BUILTINS = new Set(['assert']);

module.exports = {
  root: true,
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: './tsconfig.json',
    tsconfigRootDir: __dirname,
  },
  plugins: ['@typescript-eslint', 'deprecation'],
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended',
    'prettier',
  ],
  rules: {
    // recommended for safety
    '@typescript-eslint/no-floating-promises': 'error', // forgetting to await Activities and Workflow APIs is bad
    'deprecation/deprecation': 'warn',

    // code style preference
    'object-shorthand': ['error', 'always'],

    // relaxed rules, for convenience
    '@typescript-eslint/no-unused-vars': [
      'warn',
      {
        argsIgnorePattern: '^_',
        varsIgnorePattern: '^_',
      },
    ],
    '@typescript-eslint/no-explicit-any': 'off',
  },
  overrides: [
    {
      files: ['src/workflows.ts', 'src/workflows-*.ts', 'src/workflows/*.ts'],
      rules: {
        'no-restricted-imports': [
          'error',
          ...builtinModules.filter((m) => !ALLOWED_NODE_BUILTINS.has(m)).flatMap((m) => [m, `node:${m}`]),
        ],
      },
    },
  ],
};