lib/compose.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.compose = compose;
/**
 * Performs right-to-left function composition.
 *
 * @since v0.1.0
 * @param {any} ...args
 * @return {Function}
 * @example
 *   const f = compose(a => a + 1, a => -a, Math.pow)
 *   f(3, 4) //=> -80
 */
function compose() {
  for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
    args[_key] = arguments[_key];
  }

  return args.reduce(function (result, fn) {
    return function () {
      return result(fn.apply(undefined, arguments));
    };
  });
}