how to use the flattendeep function from lodash in javascript

_.flattenDeep() is a function from the lodash library which is used to recursively flatten an array. It takes an array as an argument and returns a new flattened array.

Here is an example of how to use _.flattenDeep():

index.tsx
const _ = require('lodash');

const nestedArray = [1, [2, [3, [4]], 5]];
const flattenedArray = _.flattenDeep(nestedArray);

console.log(flattenedArray); // Output: [1, 2, 3, 4, 5]
181 chars
7 lines

In this example, nestedArray is a multi-dimensional array with nested arrays. We pass nestedArray to _.flattenDeep() as an argument, and it returns a new flattened array which is stored in flattenedArray.

The output of console.log() shows the flattened array as [1, 2, 3, 4, 5].

_.flattenDeep() is a useful function when working with nested arrays, and is often used in functional programming.