Mastering JavaScript Functional Programming

Converting to pointfree style

On the other hand, you had better pause a bit, and not try to write everything in pointfree code, whatever it might cost. For example, consider the isNegativeBalance() function we wrote back in Chapter 6, Producing Functions - Higher-Order Functions:

const isNegativeBalance = v => v.balance < 0;

Can we write this in pointfree style? Yes, we can, and we'll see how -- but I'm not sure we'd want to code this way! We can consider building a pipeline of two functions: one will extract the balance from the given object and the next will check whether it's negative, so we will write our alternative version of the balance-checking function in a fashion like the following:

const isNegativeBalance2 = pipeline(getBalance, ...