refine-if-defined v0.1.0

refine-if-defined

If a value is defined (!== undefined), call a function to potentially refine it.

API

This module exports one function:

refineIfDefined(how)(val)

If how is false-y, or val is undefined, return val. Otherwise, call how(val) to obtain a possible replacement better. If better is defined (i.e. not undefined), return it; else return the original val.

Promise support

There's also a submodule refine-if-defined/pr.js that exports one function:

promisedRefineIfDefined(how)(val)

It works as above but with async/Promise support in all parts. Will always return a Promise.

Known issues

• Needs more/better tests and docs.

License

ISC