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

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

by modulovalue·May 13, 2026·3 points·0 comments
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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.
Target Audience

Dart developers and web engineers

Similar To

WebAssembly · DartPad

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

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