Functional Pack

functional.js

export const curry = f => a => (...b) => f(a,...b)

export const pipe = (...funcs) => (...args) => funcs.reduce((res, func, i) => (i === 0 ? func(...res) : func(res)), args);

export const mapf = (func, arr) => arr.map(func);

export const filterf = (func, arr) => arr.filter(func);

export const flatten = arr => [].concat(...arr);

export const take = (n, m = 0) => arr => arr.slice(m, n + m);