@reggi/journey.fn-free

npm i @reggi/journey.fn-free --save

Why

This module takes a function and a resolver, and passes the value of the function into the resolver. The result of the function is a function that returns the result of the resolver. However you can pass in an array of strings that will map to methods attached to the returned function that have the ability to return the un-resolved value of the original function. This is named fn-free because it allows the ability to wrap a function but still have access to it's original value.

This is a convoluted concept, but was designed for the journey module where access to the variables defined is available, but the intended return value is also available. This is a programming concept that is not very established, or at least I haven't really found it in my research.

const animal = () => 'tiger'
const result = fnFree(animal, (animal) => `bengal ${animal}`, ['journey'])
expect(result()).toBe('bengal tiger')
expect(result.journey()).toBe('tiger')