Array manipulation, ordering, searching, summarizing, etc.

Curated collection of data structures for the JavaScript/TypeScript.

`[].map(f)` for older browsers

Source code handling classes for webpack

Map over promises concurrently

Stringify any JavaScript value.

Map `visit` over an array of objects.

Rope-based persistent sequence type

async.mapLimit's functionality available as a standalone npm module

GitHub's Linguist YAML language map provided as JSON

Faster, node.js focused alternative to JavaScript's native array map.

Parses set-cookie headers into objects

Runtime to be use with the Flow Enums transform.

concatenative mapdashery

Returns an array of mapped values from an array or object.

Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

A thing that is a lot like ES6 `Map`, but without iterators, for use in environments where `for..of` syntax and `Map` are not available.

Estlint rule - no async callbacks for array methods

An RxJS map operator that takes an observable of arrays as input and emits arrays where each element represents emissions from the projected observable.

Converts a source-map from/to different formats and allows adding/changing properties.