jslib/lib/function.js

'use strict';

const toArray = require('./array').toArray;

const argsToArray = fn => () => fn(toArray(arguments));

const curry = fn => {
    return function curried () {
        const that = this,
            args = Array.prototype.slice.call(arguments);

        if (args.length < fn.length) {
            return curried.bind.apply(curried, [that].concat(args));
        } else {
            return fn.apply(that, args);
        }
    };
};

const combine = argsToArray(fns => fns.reverse().reduce((fnc, fn) => val => fnc(fn(val))));

module.exports = {
    argsToArray,
    combine,
    curry
};