Ramda Generators

A collection of lazily evaluated generators and functions to work with generators in Javascript and Typescript, following the style of Ramda's functions

It allows:

• Lazy evaluation
• Infinite streams
• Async generators

Every function is curried

Getting started

Installation

npm i ramda-generators

or

yarn add ramda-generators

Usage

ES6/Typescript

import R  from 'ramda'
import RG from 'ramda-generators'

const everyNumber = RG.generate(index => index, null);

for(const res of RG.map(R.multiply(10), everyNumber.start()))
    console.log(res); // 10, 20, 30, 40, 50...

Example - Piping

Functions and generators can be piped like every function in Ramda

import R  from 'ramda'
import RG from 'ramda-generators'

const isOdd = x => x % 2 !== 0;

const evenToString = R.pipe(
    RG.generate(index => index, null).start,
    RG.filter(isOdd),
    RG.map(n => `#${n}`),
);

for(const res of evenToString())
    console.log(res); // "#1", "#3", "#5", "#7"...

Example - Unique Timestamp

 import RG from 'ramda-generators'

const timeStamps = R.pipe(
    RG.generate(() => (new Date()).toISOString(), null).start,
    RG.debounce,
    RG.take(5),
)();

// timeStamps: [
// '2020-01-06T19:40:56.652Z',
// '2020-01-06T19:40:56.653Z',
// '2020-01-06T19:40:56.654Z',
// '2020-01-06T19:40:56.655Z',
// '2020-01-06T19:40:56.656Z' ]

Contributing

Feel more than free to open Issues, Merge requests and Feature requests at any time :D