if-fun

Returns the first argument if it is a function (regular, async, generator, …), or your custom fallback value otherwise.

API

This module exports one function:

ifFun(x[, no])

Return x if x seems to be some kind of function, otherwise return no. In case no is omitted, JavaScript rules makes it default to undefined.

Usage

See test/usage.js for examples.

Known issues

• Needs more/better tests and docs.

 

License

ISC