A simple Curry implementation in JavaScript

curry.js

const curry = function(fn) {
    const partial = function(prevArgs = []) {
        return function() {
            const nextArgs = [...prevArgs, ...arguments];
            if((prevArgs.length + arguments.length) === fn.length) {
                return fn.apply(null, nextArgs)
            } else {
                return partial(nextArgs);
            }
        }
    }

    return partial();
};

example.js

const sum = (a, b, c) => {
    return a + b + c;
}

const sumC = curry(sum);

sumC(1)(2, 3) // 6

pipe.js

const _pipe = function(args) {
  return function() {
    let result;
    args.forEach((fn, i) => {
      if(i === 0) {
        result = fn.apply(null, arguments);
      } else {
        result = fn.call(null, result);
      }
    });
    return result;
  }
}

const pipe = function() {
  return _pipe(Array.from(arguments))
}