feat: add support for host functions to browser runtime

[zshipko]

• Adds ability to define host functions when creating ExtismPlugins in the browser runtime
• The API is a little simpler than the Rust runtime
  • Functions don't handle userdata, userdata should be captured by the function declaration

[bhelx]

Functions don't handle userdata, userdata should be captured by the function declaration

so you mean userdata should be captured through scope in the closure?

[zshipko]

Functions don't handle userdata, userdata should be captured by the function declaration

so you mean userdata should be captured through scope in the closure?

yeah, I was debating how close it needs to be to the rust runtime. this was much simpler but I could add a userdata argument if you think it would be more usable.

[bhelx]

No this makes sense. It’s more idiomatic to JS

…

On Apr 6, 2023 at 5:10 PM -0500, zach ***@***.***>, wrote: > > Functions don't handle userdata, userdata should be captured by the function declaration > so you mean userdata should be captured through scope in the closure? yeah, I was debating how close it needs to be to the rust runtime. this was much simpler but I could add a userdata argument if you think it would be more usable. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>

[zshipko]

@bhelx, @nilslice: were either of you able to test this? I forgot I hadn't merged it yet and don't want to let this get stale!

[bhelx]

@zshipko i will test tonight

[bhelx]

Looks good to me @zshipko 👍