TinyJS

A simple interpreter for JavaScript 1.1 / ECMAScript 1 in Rust without dependencies.

The pipeline is working like this:

1. The lexer analyze the source code
2. The parser generate the AST
3. IR generation and optimization
4. Compilation to bytecode
5. The VM execute the compiled code

[~] ECMA-262, first edition (1997) link

LLM usage for code

I’ve used Codex to assist me. It’s been especially helpful for writing test cases and spotting inconsistencies in the codebase. I still wrote every line of code myself (before cleaning and optimizing things).

I recommend this blog article to understand how LLM assistance can be used without losing control of a technical project.