make trackedTask infer the return type correctly

[emattias]

fixes #84

• typeScript infers generics left to right. Return appears first, but nothing in the parameter positions directly constrains it — it only appears indirectly inside the constraint of LocalTask. TypeScript can't "reverse-infer" Return from LocalTask's constraint, so it falls back to the default unknown
• the fix is add an overload that removes Return and Args as independent generics and instead extract them from LocalTask using conditional types

[vercel]

@emattias is attempting to deploy a commit to the universal-ember Team on Vercel.

A member of the Team first needs to authorize it.

[NullVoxPopuli]

Any ideas for a type test to ensure this doesn't regress?

[emattias]

Not sure, are there other type tests?

[NullVoxPopuli]

looks like not in the traditional sense (separate project with expect-type), but this repo has a lint:types in each project, which you could use in the tests/vite-app for examplee -- make a ts file that creates the situation that failed before with type checking, and hope that your change makes typechecking succeed (you can still add eexpect type if you perefr to use that)