A developer is building a JSON Schema validator from scratch to deepen their understanding of the specification. The project starts with reading the official specs and reviewing existing implementations. They plan to use the official JSON-Schema-Test-Suite for testing and will implement support for Draft 2020-12, with optional Draft-07 compatibility.

This hands-on approach serves a dual purpose: mastering the complex validation rules while learning Typescript. The developer aims to focus on architectural decisions by supporting multiple drafts. Weekly progress updates and the open-source code will be shared on GitHub, providing a transparent look at the development process.

The roadmap includes writing test code before implementing the validator itself. If the scope becomes too large, supporting an additional draft may be skipped. This project offers a practical way to contribute to the JSON Schema ecosystem while gaining deep, technical proficiency with the standard and a modern programming language.