Fast, modern, and practical utility library for FP in TypeScript.

Features

• 👀 provides more readable code, due to the data-first approach
• ✨ supports TypeScript
• 🛡 helps you write safer code with Maybe and Either types
• 🎯 all functions return immutable data (no side-effects)
• 🌲 tree-shakeable

Getting started

Installation

yarn add lambda-craft

or with npm

npm install lambda-craft --save

Usage

Module	Namespace	Description
[Array]	Arr	Utility functions for Array.
[Object (Dict)]	Dict	Utility functions for Object.
[Maybe]	Maybe	Functions for handling the Maybe data type that represents the existence and nonexistence of a value.
[Either]	Either	Functions for describing the Either of a certain operation without relying on exceptions.
[Task]	Task	Functions for describing the asynchoronous operations.

Example

import { pipe, Maybe, Arr } from 'lambda-craft'

const r = pipe(
  Arr.of(1, 2, 3, 4, 5), // -> [1,2,3,4,5]
  Arr.take(2),  // -> [1,2]
  Arr.find(n => n == 1), // -> Maybe(1)
  Maybe.map(n => n * 10), // -> Maybe(10)
  Maybe.getOrDefault<number>(5), // -> 10
)

License

The MIT License.

See LICENSE