Find functions in a library based on inputs and outputs. Pick-function brute forces arguments provided in different orders agains all functions in the library until it finds specified output.
npm install pick-function --save
To find a function that given params x and y returns z in library L, do
pick(L, [x, y], z)
As a more realistic scenario, to find a function that adds numbers in Ramda library (R), you can do:
require('pick-function').default(R, [3, 7], 10) -> ['add']