flatten

What is flatten?

The flatten npm package is designed to flatten nested arrays or objects into a single level, making it easier to work with complex data structures. It provides a straightforward and efficient way to reduce the depth of data structures for easier processing and manipulation.

What are flatten's main functionalities?

Flattening arrays

This feature allows you to flatten nested arrays into a single-level array. For example, if you have an array like [[1, 2], [3, 4]], using flatten will result in [1, 2, 3, 4].

[].concat.apply([], array)

Flattening objects

This feature is for flattening nested objects into a single-level array or object, depending on the implementation. It's useful for when you need to simplify the structure of deeply nested objects.

Object.keys(obj).reduce(function(acc, key) { return acc.concat([{key: obj[key]}]); }, [])

Other packages similar to flatten

lodash.flatten

Lodash's flatten method offers similar functionality for flattening arrays. It is part of the larger lodash library, which provides a wide range of utilities for working with arrays, objects, and other JavaScript data types. Compared to the standalone flatten package, lodash.flatten comes with the overhead of the larger lodash library, but benefits from its extensive utility functions.

flat

The flat package provides methods for flattening arrays as well as for flattening and unflattening objects. It offers more flexibility compared to the flatten package, especially with its ability to handle objects and its options for controlling the depth of flattening. This makes it a more versatile choice for complex data manipulation tasks.

README

flatten

A tiny utility to flatten arrays of arrays (of arrays, etc., recursively, infinitely or to an optional depth) into a single array of non-arrays.

example:

> var flatten = require('flatten');
undefined
> flatten([1, [2, 3], [4, 5, 6], [7, [8, 9]], 10])
[ 1,
  2,
  3,
  4,
  5,
  6,
  7,
  8,
  9,
  10 ]
> flatten([1, [2, [3, [4, [5]]]]], 2)
[ 1,
  2,
  3,
  [ 4, [ 5 ] ] ]

install:

npm install flatten

license:

MIT/X11.