how to use the flattendepth function from lodash in javascript

The _.flattenDepth function from the Lodash library can be used to flatten an input array up to a specified depth. Here's an example of how to use it:

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

const input = [1, [2, [3, [4]], 5]]
const flattened = _.flattenDepth(input, 2)

console.log(flattened) // Output: [1, 2, 3, 4, 5]
159 chars
7 lines

In this example, the input array contains nested arrays up to a depth of 3. We pass this array and a depth of 2 to _.flattenDepth, which flattens the array up to 2 levels. The resulting flattened array contains all the elements in the original input array, but with only 2 levels of nesting. Finally, we log the flattened array to the console.

Note that we import the Lodash library using require. If you're working in a browser environment, you can include the Lodash library using a script tag in your HTML file.