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    \u003cimg src=\"https://travis-ci.org/gigobyte/purify.svg?branch=master\" alt=\"Build Status\"\u003e\n      \u003cimg src=\"https://camo.githubusercontent.com/41c68e9f29c6caccc084e5a147e0abd5f392d9bc/68747470733a2f2f62616467656e2e6e65742f62616467652f547970655363726970742f7374726963742532302546302539462539322541412f626c7565\" alt=\"Built with Typescript\"\u003e\n    \u003c/a\u003e\n\u003c/p\u003e\n\n# Purifree\nPurifree is a fork from \u003ca href=\"https://github.com/gigobyte/purify\"\u003ePurify\u003c/a\u003e that allows you to program in a point-free style, and adds a few new capabilities.\n# What is Purify?\nPurify is a library for functional programming in TypeScript.\nIts purpose is to allow developers to use popular patterns and abstractions that are available in most functional languages.\nLearn more about Purify \u003ca href=\"https://github.com/gigobyte/purify\"\u003ehere\u003c/a\u003e\n# How to start?\nPurifree is available as a package on npm. You can install it with a package manager of your choice:\n```\n$ npm install purifree-ts\n```\n# Purifree compatability\nPurifree is 100% compatible with purify, and can be used interchangeably.\n## Point-free style \nPoint-free functions can be used with any ADTs (without needing module-specific imports), and can also be used together with the chainable (\u003ca href=\"https://github.com/gigobyte/purify\"\u003epurify\u003c/a\u003e) API. \n```typescript\n// pointfree: Maybe\u003cstring\u003e\nconst pointfree = pipe(\n  Just('name'),\n  map((name) =\u003e name.toUpperCase()),\n  filter((name) =\u003e name.length \u003e 5),\n  chain((name) =\u003e (Math.random() \u003e 0.5 ? Just(name + ' lucky :)') : Nothing))\n)\n// matchTest: string\nconst matchTest = pipe(\n  Right\u003cnumber, string\u003e(100),\n  chain((num) =\u003e (num \u003e 50 ? Right(num) : Left(`bad number: ${num}`))),\n  match({\n    Right: (e) =\u003e 'Great number!' + e,\n    Left: (e) =\u003e `OK number. | msg: (${e})`\n  })\n)\n```\n\n## Do* notation\nThis fork features the generator do* notation for all data structures except for arrays.\nThe do notation lets you easily chain operations without having to nest your code.\n```typescript\n// result: Either\u003cError, { name: string, surname: string, favoriteColor: string }\u003e\nconst result = Do(function* () {\n  // name: string\n  const name = yield* Right(\"name\")\n  // surname: string\n  const surname = yield* Right(\"surname\")\n  // favoriteColor: string\n  const favoriteColor = yield* Left\u003cError, string\u003e(Error(\"DB error!\"))\n  return {\n    name,\n    surname,\n    favoriteColor\n  }\n})\n```\nChain version equivalent: \n```typescript\n// result: Either\u003cError, { name: string, surname: string, favoriteColor: string }\u003e\nconst result = Right\u003cstring, Error\u003e('name').chain((name) =\u003e\n  Right\u003cstring, Error\u003e('surname').chain((surname) =\u003e\n    Left\u003cError, string\u003e(Error('DB error!')).map((favoriteColor) =\u003e ({\n      name,\n      surname,\n      favoriteColor\n    }))\n  )\n)\n```\n### Traverse, Sequence, SequenceS, SequenceT\n```typescript\n// Gets an Either\u003cnever, number\u003e, maps it to an Either\u003cnever, NonEmptyList\u003cnumber\u003e\u003e, and inverts it into a NonEmptyList\u003cEither\u003cnever, number\u003e\u003e\n// traverseTest: NonEmptyList\u003cEither\u003cnever, number\u003e\u003e\nconst traverseTest = pipe(\n  Right(1),\n  traverse(NonEmptyList, (num) =\u003e NonEmptyList(num))\n)\n\n// Gets an Either\u003cnever, NonEmptyList\u003cnumber\u003e\u003e and inverts it into a NonEmptyList\u003cEither\u003cnever, number\u003e\u003e\n// sequenceTest: NonEmptyList\u003cEither\u003cnever, number\u003e\u003e\nconst sequenceTest = pipe(\n  Right(NonEmptyList(1)),\n  sequence(NonEmptyList)\n)\n\n// sequenceTTest: Either\u003cnever, [number, string, boolean]\u003e\nconst sequenceTTest = sequenceT(Either.of)(Right(2), Right('name'), Right(true))\n\n// sequenceStrutureTest: Either\u003cstring, { name: string, age: number }\u003e\nconst sequenceStrutureTest = sequenceS(Either.of)({\n  name: Right\u003cstring, string\u003e('name'),\n  age: Right\u003cnumber, string\u003e(100)\n})\n\n```\n### Kleisli\nThe function pipeK can be used as an easy way to combine functions that return monads without using chain.\nIf you need to use a long list of chains, you can use the pipeK function to compose the functions instead of passing each one into chain.\nInstead of: \n```typescript\nconst getNameTest = pipe(\n  chain((name?: string) =\u003e name ? Just(name) : Nothing),\n  chain((name) =\u003e Just(name.toUpperCase())),\n  chain((uppercasedName) =\u003e uppercasedName.length \u003e 3 ? Just(uppercasedName) : Nothing)\n)\n```\nUse:\n```typescript\n// getNameTest: ( name?: string ) =\u003e Maybe\u003cstring\u003e\nconst getNameTest = kleisli(\n  (name?: string) =\u003e name ? Just(name) : Nothing,\n  (name) =\u003e Just(name.toUpperCase()),\n  (uppercasedName) =\u003e uppercasedName.length \u003e 3 ? Just(uppercasedName) : Nothing\n)\n// result: Maybe\u003cstring\u003e\nconst result = getNameTest('name')\n```\n### Lifting\nYou can use the liftN family of functions to lift a function that takes normal values into a function that takes and returns elevated values.\n*WARNING*: If you try lifting a function that uses generics, it will probably loose its type due to typescript's limitations.\n```typescript\n// add takes normal values\nconst add = (num1: number, num2: number) =\u003e num1 + num2\n// addL takes elevated values, and returns an elevated value\n// addL: Lifted\u003c(a: Ap\u003cnumber\u003e, b: Ap\u003cnumber\u003e) =\u003e Ap\u003cnumber\u003e\u003e \nconst addL = lift2(add)\n// add5Option (b: Either\u003cnever, number\u003e) =\u003e Either\u003cnever, number\u003e\nconst add5Option = addL(Right(5))\n// result: Either\u003cnever, number\u003e = Right(15)\nconst result = add5Option(Right(10))\n```\n\n### Node for Codec\nThe Codec module's function `map` is re-exported as `Codec.map`\n\n### Codesandbox\nYou can try it out \u003ca href=\"https://codesandbox.io/s/purifree-template-hcyzs\"\u003e in the browser.  \u003c/a\u003e\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnythrox%2Fpurifree","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fnythrox%2Fpurifree","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnythrox%2Fpurifree/lists"}