https://github.com/elclanrs/essential.js

Essential JS - Functional JavaScript "the right way"
https://github.com/elclanrs/essential.js

Last synced: 18 days ago
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Essential JS - Functional JavaScript "the right way"

• Host: GitHub
• URL: https://github.com/elclanrs/essential.js
• Owner: elclanrs
• Created: 2014-05-07T03:15:14.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2020-05-28T18:49:29.000Z (over 4 years ago)
• Last Synced: 2024-05-16T13:23:12.928Z (6 months ago)
• Language: CoffeeScript
• Homepage:
• Size: 932 KB
• Stars: 100
• Watchers: 6
• Forks: 6
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

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README

        
![essential.js](http://i.imgur.com/CalNHKK.png)

**Latest:** 1.1.20  

**Compatibility:** Node, ES5, Common, AMD  

**License:** MIT  

```

npm install essentialjs

```

```javascript

// Add functions to global namespace,

// `global` for Node or `window` for browser

require('essentialjs').expose(global)

```

## Highlights

Essential.js is an alternative to [Underscore.js](http://underscorejs.org/) that gives you a solid base to get started with functional programming in JavaScript:

- All non-variadic functions with more than one argument are curried.

- Arguments are in proper order for better composition.

- Includes a few helpers not found in Underscore.

- Inspired by [Brian Lonsdorf's](https://github.com/DrBoolean) talk, [Hey Underscore, You're Doing it Wrong](https://www.youtube.com/watch?v=m3svKOdZijA).

## API

```coffeescript

module.exports = {

  # Core

  _, id, K,

  builtin, toArray,

  variadic, apply, applyNew,

  ncurry, λ, curry, partial,

  flip, flip3, nflip,

  unary, binary, nary,

  compose, pcompose, sequence, over,

  notF, not:notF, eq, notEq, typeOf, isType,

  toObject, extend, deepExtend, deepClone, forOwn,

  fold, fold1, foldr, foldr1, map, filter, any, all, each, indexOf, concat,

  slice, first, last, rest, initial, take, drop,

  inArray, remove, tails, uniqueBy, unique, dups,

  flatten, union, intersection, flatMap,

  pluck, deepPluck, where, deepWhere,

  values, pairs, interleave, intersperse, intercalate,

  zip, zipWith, zipObject, unzipObject,

  range, shuffle,

  sortBy, groupBy, countBy,

  format, template, gmatch, permutations, combinations, powerset,

  # Fantasy

  fmap, ap, chain, liftA, seqM

}

```