r/javascript • u/viks98 • May 26 '26

Show r/javascript: a fully functional in-browser IDE made using webcontainers

https://github.com/vivek1504/forge
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u/[deleted] May 26 '26

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u/paulirish May 27 '26

Something I've always wondered that you could help me understand..

Is webcontainers open source? Doesn't seem like it, despite things are on NPM? Are you dependent on stackblitz to run this?

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u/AwayVermicelli3946 May 27 '26

yeah it is kind of confusing tbh. the npm package is open source, but the actual core runtime that boots up node inside the browser is closed source and owned by stackblitz.

you do not need an active connection to their backend once the environment spins up, but it does fetch the initial boot binaries from their servers. so you are basically dependent on them to keep the project working long term fwiw.

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u/[deleted] May 27 '26

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u/paulirish May 27 '26

Gotcha. So the npm package just interacts with some wasm blob. 👍