What would be the right way to invoke the Websharper compiler in version 4? Can you provide a snippet like the one above?
Thank you!
Hi,
try.websharper.com already uses WebSharper 4 beta, that's where the difference is coming from.
WS3 tranlates from F# quotations (ReflectedDefinition
), and the F# compiler itself creates these extra-long form on complicated match expressions. WS3 is could have tried to optimize it away, but we never got around to implement this.
WS4 translates from source code (using FSharp.Compiler.Service
) which does not have this issue, matches can usually be tranlated to switch
statements which are in linear size to the original.
You can find the upgrade guide to WS4 here: WebSharper 3 to 4-beta update guide
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I wanted to call attention to what seems to be a bug. Or maybe I'm missing an important compiler option because this does not happen in try.websharper.com.
I use this code to compile from F# to javascript:
when the following function compiles the result has more than 9000 lines...
The string "ArrowDown" shows up only twice in the original code but it shows up 34 times in the resulting JS. This is just the first 1000 lines:
BTW, I found another instance where code compiled wrong in my setup but worked well in try.websharper.com