I can see the the current kotlin 2.4.0 wasm backen...

# webassembly

[CharlieTap]

I can see the the current kotlin 2.4.0 wasm backend still lowers to a module and internally uses some wasi preview 1 calls , then applies wasm-tools to create a component and adapt the preview 1 to preview 2 calls. I have a few questions about this:

• Are there any plans to lower directly to a component?
• Are there any plans to remove the preview 1.0 calls and shim?
• Any plans on preview 3 or a more component model 1.0 (GC ABI) shape?

[bashor]

> • Are there any plans to lower directly to a component?
At some point, yes, but not very soon.
Right now, generating wasm core and using an external tool (wasm-tools) is simpler for us and more flexible for users.
> • Are there any plans to remove the preview 1.0 calls and shim?
Yes, it's part of moving libraries to wasi 0.2+ (See KT-64568, KT-87207)
> • Any plans on preview 3 or a more component model 1.0 (GC ABI) shape?
Yes and yes, but no specific timeline for that.

[Jim Teichgräber]

To add to what Zalim said on point number 1, we do plan on making the wasm-tools usage seamless for users, so that it's entirely transparent and compiling a future wasm/wasi 0.2 gradle task will (also) give you a wasm component with no questions asked.