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A comment on WebContainers: Run Node.js natively in the browser. Parent comment

Re:WebContainers: Run Node.js natively in the browser by emteycz on Thursday May 20, 2021 @04:51PM (#27227059)
I think the issue isn't with Wasm support, it's the filesystem API. They could've included a polyfill though... But as that API is new it might not be available yet.
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Re:WebContainers: Run Node.js natively in the browser by dfabulich on Thursday May 20, 2021 @05:23PM (#27227479)
It's the "File System Access API," the one that allows the browser to read/write files on your actual computer. It's an I/O feature, impossible to polyfill.

The similarly named "FileSystem API" gives you access to a sandboxed "virtual drive" in the browser. Firefox has supported that for years, and polyfills are possible, but it's irrelevant in this case.

https://caniuse.com/?search=file%20system

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Re:WebContainers: Run Node.js natively in the browser by slver on Thursday May 20, 2021 @06:31PM (#27228254)
I believe it still counts as a polyfill, even if it doesn't do what it says on the can (but it has compatible interface, so your app runs).
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