How can I use Lodash for function composition?

What is function composition and how can I use Lodash for it?

Function composition is the process of combining two or more functions to produce a new function. Lodash provides a _.flow method that allows you to compose functions easily.

Can you show me an example of using _.flow?

Sure! Here's a simple example:

const _ = require('lodash');

const add = x => x + 1;
const multiply = x => x * 2;

const composedFunction = _.flow([add, multiply]);
console.log(composedFunction(3)); // Output: 8

What if I want to compose functions in reverse order?

You can use _.flowRight to compose functions from right to left. For example:

const composedFunction = _.flowRight([multiply, add]);
console.log(composedFunction(3)); // Output: 6