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#webassembly
Title
# webassembly
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darkmoon_uk

07/17/2019, 12:55 AM
@jetbrains Is the Kotlin/WebAssembly target currently under any active development? https://discuss.kotlinlang.org/t/wasm-wasi-where-do-you-go-kotlin/12175/3
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napperley

07/17/2019, 2:04 AM
Very concerning that Kotlin's WASM support has come to a standstill, unless there are some recent developments that JB will be sharing soon.
What are the plans for Kotlin's WASM support?
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elizarov

07/17/2019, 3:36 AM
What missing features are you waiting to be implemented?
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napperley

07/17/2019, 5:42 AM
Some major features that are missing: - Access to JS APIs (eg manipulate the DOM) - Automated memory management (GC/ARC) - High level data types (eg Strings) - Bi directional communication layer between WASM and Kotlin Native (eg have a Kotlin library on one platform that can be accessed on another platform) - Coroutines/multi threading support - Exception handling
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darkmoon_uk

07/17/2019, 6:42 AM
- Everything @napperley suggested ✔️ - Coroutines & Serialization are fundamentals for useful App development (and a blocker for me to use WASM) - Ktor Client Support would be a 'gold standard' (as this is a JB project)
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napperley

07/17/2019, 7:18 AM
One thing that would be nice (not essential but would provide Kotlin with a large advantage over its competitors) is to have a WASM web front-end library/framework: - Designed from the ground up to target WASM via Kotlin Native - Does things that are Kotlinic (idiomatic Kotlin/ aka the Kotlin way) - Provides good performance - Has a standard way to easily develop custom web controls - Isn't heavily reliant on a major JS library/framework - Uses a easy build/deployment process - Provides a rapid/iterative prototyping system (eg hot code reloading) - Code based DSL system for building/managing views (including data binding/styling)
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darkmoon_uk

07/17/2019, 7:37 AM
...such a thing would be a huge enabler. In Mobile Dev, myself and colleagues are universally of the view that we've love to be able to work in web front-end, to treat the browser as another client; just not at the cost of having to touch JavaScript.
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napperley

07/17/2019, 7:50 AM
One of the biggest issues with Kotlin JS is dealing with a complex build system imposed by JS (so many steps that shouldn't be needed to do basic things). Also the JS ecosystem moves at a ridiculously fast pace, which at times is overwhelming to deal with for back-end/mobile/desktop developers. There is a opportunity with WASM for Kotlin to do front-end stuff (from the ground up) at a sane pace that developers can easily keep up with, which isn't bogged down by a new JS trend/standard ( https://xkcd.com/927/ - aka JS fatigue ) that lasts about 3-6 months 😆.
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olonho

07/17/2019, 12:19 PM
Further development of LLVM-based Kotlin WASM isn’t our top priority indeed, but another backend specially for WASM is being considered.
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darkmoon_uk

07/17/2019, 12:22 PM
Thanks @olonho ...feels like it could be a missed opportunity, but it's good to have an answer either way.
@napperley 😭
@olonho Maybe you have already seen it; but for your consideration this WASM transpiler project looks impressively made: https://github.com/mirkosertic/Bytecoder
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sdeleuze

07/17/2019, 2:50 PM
@olonho Glad to hear that 👏
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gildor

07/17/2019, 3:29 PM
I don't think that it is missed opportunity. K/N (and llvm toolchain in general) is definitely not the best choice for wasm. I would say it's focus of effort. All feature requests mentioned above are hardly related to K/N in general. And Kotlin JS or even separate backend is way to achieve it, not llvm and k/n
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elizarov

07/17/2019, 3:32 PM
I’ve just started reading the wish list and I already see that it has nothing to do with Kotlin. This is mostly a list of missing things in WASM that we are all waiting for.
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gildor

07/17/2019, 3:35 PM
Exactly my thoughts! Most of those things just do not exist in wasm (or on some technical preview stage)
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darkmoon_uk

07/17/2019, 10:50 PM
Ok, thanks for the enlightenment 👍
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