Some functional helper functions

myFunctionals.js

  //  Functional helpers, curry and compose
  function curry(fn, ...args) {
    let _curry = (args) => args.length < fn.length ? (..._args) => _curry([...args, ..._args]) : fn(...args);
    return _curry(args);
  }
  const compose = (...fns) => fns.reduce((f, g) => (...args) => f(g(...args)));
  const map = curry((fn, value) => value.map(fn));
  const reduce = curry((fn, value) => value.reduce(fn));
  // ----- end of functional helpers