Support Deno.dlopen for bundling libraries

[mwcz]

This is somewhat related to #19, but I opened a separate issue because dlopen seems uniquely different from other filesystem reads. This would be make it possible to use leaf to bundle, a Rust library, for example, in a single executable.

[clemens-tolboom]

Testing the CLI

Deno --unstable
> Deno.dlopen
[Function: dlopen]

Leaf uses const fileContent = Deno.readFileSync(filePath); and overrides it.

Can you provide a typescript example opening and serving out from a Deno.readFileSync + (magic?) + Deno.dlopen using a public DLL?

[mwcz]

Consensus in discord is that this request isn't possible because dlopen is provided by the OS, so it can't be overridden in leaf.

[clemens-tolboom]

Where did that discussion took place? Do you have a link to Discord discussion? I spend some time writing so useful feedback would help :-)

[mwcz]

Sure, here's the conversation. I'm not sure how to link to discord messages, but here's some screenshots.

[clemens-tolboom]

Thanks for your answer ... lol ... discussed a long time ago :-p

I just clicked the ellipsis then Copy Message Link https://discord.com/channels/684898665143206084/769285344809451572/935575448254054461

I myself was wondering as Leaf stores files you could extract it to real FS then load it with dlopen, but have no experience with dlopen yet.

[mwcz]

Ah, I was on my phone and the copy link feature must not be possible on discord mobile.

What you suggest should work, it's just kind of a pain and introduces new error cases that have to be handled, like fs permission errors, no tmp dir available, no disk space, etc. It's what I was getting at with this comment in the thread: