TLDR Web Dev · ARTICLES & TUTORIALS

I WROTE A WASM INTERPRETER IN C

irreducible.io11 min read

Summary from the TLDR Web Dev newsletter

This developer spent six months building a WebAssembly (Wasm) interpreter in C as a learning project to deepen their understanding of low-level computing. In this post, they explain the evolution of Wasm and its applications in web and cloud environments, such as in-browser compilation. They then walk through the interpreter's implementation, covering module decoding, function invocation, and execution via an opcode switch loop.