[BUG] Fetcher and SourceOfTruth must now have the same type signatures

[chrisbanes]

I'm just updating to alpha06, and hit a bit of a roadblock....

The old API allowed this:

return StoreBuilder.fromNonFlow<Param, Pair<Result, ExtraInfo> { p: Param ->
    return result to extraInfoWhichPersisterNeeds
}.persister<Param, Result>(
    writer = { (result, extraInfo) ->
        // persist, using the extra info
    }
}

But now the SourceOfTruth and Fetcher need to have the same type signatures, so there's no way to pass along that extra info. Feels a little restrictive to me.

[digitalbuddha]

That is not expected/intentional. I can double check tonight what happened. Curious if we can have api checks pick this up.

[chrisbanes]

Looking at this again, it seems to be a type inference issue when using a Unit key. I can workaround it by explicitly setting the type.

return StoreBuilder.from(
    fetcher = nonFlowFetcher { _: Unit ->
        /* Need to explicitly declare the key type here */
    },
    sourceOfTruth = SourceOfTruth.from(
        writer = { _: Unit, response ->
            /* Need to explicitly declare the key's type here */
        }
    )
).build()

Closing this! Thanks.

[digitalbuddha]

We are about to change the api signatures for the last time #181 the snapshot is live. I'm hoping to release this as a beta next week