Piping output differs from input and fails?

[arichiardi]

Hello!

I got this:

And error:

13   return R.pipe(
     ~~~~~~~~~~~~~~
14     R.evolve(aggregateSanitation),
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
15     R.props(["domain", "name", "id"])
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
16   )(aggregate);
   ~~~~~~~~~~~~~~~

src/impl/file-persistence.ts(13,3): error TS2322: Type '{}[]' is not assignable to type 'string[]'.
  Type '{}' is not assignable to type 'string'.

I solved with casting, but I was wondering whether there is a better way to fix it?

Thanks a lot for typing ramda!

[arichiardi]

This also solves:

interface PropsFn { (obj: any): string[]; };

function aggregate(aggregate: AggregateIdentifier): string[] {
  return R.pipe(
    R.evolve(aggregateSanitation),
    <PropsFn>R.props(["domain", "name", "id"])
  )(aggregate);
}

[KiaraGrouwstra]

Yeah, it's our top issue, minimum repro being R.pipe(R.identity) (reason: presence of generics it does not yet have the info to resolve, instead yielding {}). A fix would pretty much require TypeScript to better prioritize this. Feel free to upvote / voice your support over there, for what it's worth.

[KiaraGrouwstra]

This issue is still a thing, but I'll close as dupe of #86.