WebSharper does need some specific metadata to be present in the assembly where a type used on the client side is defined, even if there is no [<JavaScript>] code in this backend assembly.
All you need to do in this case is to add the WebSharper NuGet reference to your backend project. This will add a post-build pass that runs the WebSharper compiler on this assembly and generates the necessary metadata.
... but adding websharper nuget package leads to adding several dll's to the backend project, I doubt that all of them are needed. So exacly which dll should I add ?
ok, a work around for that would be to:
manually edit fsproj file and replace <OutputType>Library</OutputType> with <WebSharperProject>Library</WebSharperProject>
and add `<Import Project="..\..\packages\web\WebSharper\build\WebSharper.targets" Condition="Exists('..\..\packages\web\WebSharper\build\WebSharper.targets')" />`
after `<Import Project="$(FSharpTargetsPath)" Condition="Exists('$(FSharpTargetsPath)')" />`
We need also to reference 3 websharper libs
- WebSharper.Core
- WebSharper.Core.JavaScript
- WebSharper.JavaScript
Thank you - that worked great.
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Hi.
I'm writing a WebSharper web frontend for an existing F# backend library and would like to reuse the domain models already created within the JS client code. The backend is a project within the same solution and I've added a reference to the assembly from my WebSharper client project.
My problem is I can't seem to be able to reuse the existing types from the backend assembly within any client-side code. For instance just a simple union such as,
type DU = | DU of string, fails to compile withFailed to translate union creation: DU.Is there anyway to reuse such domain types within the client-side JavaScript code? I've looked at using the
Proxyattribute but this seems to require me to copy-and-paste existing implementations into the client project.Thanks.