Dart Live – compiler, VM, analyzer and hot reload on the web via WASM

Name: Dart Live – compiler, VM, analyzer and hot reload on the web via WASM
Availability: InStock
Author: modulovalue

by modulovalue·May 13, 2026·3 points·0 comments

Visit Project View on HN

AI Analysis

●●●BangerWizardryZero to One

Dart VM compiled to WASM with stateful hot reload running entirely client-side.

Strengths

•Compiles Dart CFE and analyzer to WebAssembly for fully client-side execution.
•Stateful hot reload preserves variable values across code edits in the browser.
•Uses ARM simulator via emcc to run Dart VM without native backend requirements.

Weaknesses

•7.6 MB gzipped payload may impact initial load times on slow connections.
•Niche appeal limited to Dart ecosystem rather than broader web development.

Post Description

I managed to get the Dart VM to compile to WebAssembly so that I can compile Dart programs in the browser. Dart ships with a basic ARM interpreter and by using that, hot reload works directly in the browser.

It's 7.6 MB gzipped and there's no server running behind it, so I was able to host it directly on github pages.

Here's the github repo with some more info: https://github.com/modulovalue/dart-live