evanw/thinscript — explained in plain English
Analysis updated 2026-07-25 · repo last pushed 2016-05-11
Experiment with how programming languages and compilers are built from scratch.
Write readable code and compile it to WebAssembly for fast browser-based performance.
Explore WebAssembly output without needing to learn its complex low-level syntax.
Build a prototype for a fast browser game using a TypeScript-like language.
| evanw/thinscript | prdgmshift/usbliter8 | peng-zhihui/ctrl-foc-lite | |
|---|---|---|---|
| Stars | 1,365 | 1,377 | 1,287 |
| Language | C | C | C |
| Last pushed | 2016-05-11 | 2026-06-18 | 2022-07-25 |
| Maintenance | Dormant | Maintained | Dormant |
| Setup difficulty | easy | hard | hard |
| Complexity | 3/5 | 5/5 | 5/5 |
| Audience | developer | researcher | developer |
Figures from each repo's GitHub metadata at analysis time.
No external dependencies required, an interactive browser demo is available to try it instantly without local setup.
ThinScript is an experimental programming language that takes code written in a style resembling TypeScript and translates it so it can run as JavaScript, WebAssembly, or C. Its main goal is to make WebAssembly more approachable. WebAssembly is a powerful low-level language that runs in web browsers at near-native speeds, but it is notoriously difficult for humans to write directly. This project acts as a simpler layer on top, letting you write more readable code that still gets the performance benefits of a lower-level language. At a high level, you write your code using familiar concepts like classes and typed variables, and a compiler translates that into the target language of your choice. The compiler itself is written in ThinScript, meaning it can compile its own source code, a concept called bootstrapping. Because it has no external dependencies and compiles quickly, the whole system is self-contained. You can even try it out in your browser using the interactive demo linked in the project. This tool would appeal to developers who want to experiment with how programming languages are built or who want to explore WebAssembly without learning its complex syntax. For example, a developer interested in creating a fast, browser-based game could write logic in this more readable format and compile it directly to WebAssembly for speed. However, the creator explicitly states it is not ready for real-world use yet. The biggest limitation is that the generated code currently does not include automatic memory management. In programming, this is known as garbage collection, the process of cleaning up computer memory that is no longer being used. Without it, programs built with this language will continuously consume more memory the longer they run. The creator notes that adding this cleanup feature is planned, but for now, the project remains an interesting experiment rather than a production-ready tool.
ThinScript is an experimental language that compiles TypeScript-like code into JavaScript, WebAssembly, or C. It is a self-contained learning tool for exploring WebAssembly without writing low-level code.
Mainly C. The stack also includes C, JavaScript, WebAssembly.
Dormant — no commits in 2+ years (last push 2016-05-11).
The explanation does not specify a license, so the licensing terms for this project are unknown.
Setup difficulty is rated easy, with roughly 5min to a first successful run.
Mainly developer.
This repo across BitVibe Labs
double-check against the repo, no cap.