MCP Agent TypeScript Port

# commons [](https://circleci.com/gh/sinonjs/commons) [](https://codecov.io/gh/sinonjs/commons) <a href="CODE_OF_CONDUCT.md"><img src="https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg" alt="Contributor Covenant" /></a> Simple functions shared among the sinon end user libraries ## Rules - Follows the [Sinon.JS compatibility](https://github.com/sinonjs/sinon/blob/master/CONTRIBUTING.md#compatibility) - 100% test coverage - Code formatted using [Prettier](https://prettier.io) - No side effects welcome! (only pure functions) - No platform specific functions - One export per file (any bundler can do tree shaking)