feat(pipeP-like): allow non-PromiseLike as fn return type

[ikatyang]

Fixes #39

[codecov-io]

Codecov Report

Merging #44 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #44   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          17     17           
  Lines         291    291           
  Branches       42     42           
=====================================
  Hits          291    291

Impacted Files	Coverage Δ
templates/utils/create-composition-declarations.ts	100% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9b325f1...910dd40. Read the comment docs.