I’ve spent the last 20 years building tools across a dozen languages, always adhering to a handcrafted personal style. But as the "AI era" takes over, my workflow has shifted. Coding is becoming less about writing every character of syntax and more about guiding LLMs—evaluating their output, intervening when they get stuck, and refining algorithms.

This shift created a new problem for me: I suddenly have a massive volume of code in languages I’ve used for decades, alongside languages I barely know. And frankly, it looks like a mess.

I tried existing formatters, but I kept hitting two walls:

- Lack of broad language support within a single tool.

- Too opinionated: most formatters give you a few toggles, but if you don't like their core philosophy, you're stuck.

So in the spirit of the age, I set out with AI to create a new formatter tool with a core written in Rust (for raw speed), Tree-sitter for AST (for its broad support) and Rhai scripts for dynamic formatting rules.

The system is set up to allow any language supported by Tree-sitter and any formatting (or linting) rules you want with the scripting interface.

Current Progress:

It’s already self-hosting (formatting its own Rust and Rhai code). I’ve also implemented initial support for Java, TS/JS, Markdown, CSS, SQL, Vue, HTML, and JSON.

Fun part? There is "fragment" formatting - for example, it can reach into Markdown and format the code blocks within the text with the matching syntax formatter.

Link: https://github.com/neatify-tech/neatify