f-utility/lib/flip.js

functional utilities

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.flip = undefined;

var _katsuCurry = require("katsu-curry");

/**
 * take a function, flip the two parameters being passed to it, curry it
 * @method flip
 * @param {function} fn - a function
 * @returns {*} the result of invoking function with two inverted parameters
 * @public
 * @example
 * import {flip} from 'f-utility'
 * const divide = (a, b) => a / b
 * const ivideday = flip(divide)
 * divide(1, 5) // 0.2
 * ivideday(1, 5) // 5
 */
var flip = exports.flip = function flip(fn) {
  return (0, _katsuCurry.curry)(function (a, b) {
    return fn(b, a);
  });
};