flo-utils/lib/useCompose.js

some utils

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

/**
 * 数据操作集合成加工 A => B => C
 * useCompose([C, B, A])(data)
 *
 * @example
 * useCompose(
    console.log,
    partial(add, 10),
    partial(pow, 3),
    partial(multiply, 5)
  )(2); // 1010
 */

/**
 *
 * @param {*} [middlewares=[]]
 * @param {*} [hooks=[]]
 * @param {boolean} [isReverse=true]
 * @returns
 */
function useCompose() {
  var middlewares = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
  var hooks = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
  var isReverse = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
  var fns = isReverse ? _toConsumableArray(middlewares).reverse() : _toConsumableArray(middlewares);
  var hns = isReverse ? _toConsumableArray(hooks).reverse() : _toConsumableArray(hooks);

  var reduce = function reduce(pre, cur, index) {
    if (pre) {
      return function () {
        var res = cur(pre.apply(void 0, arguments));
        return hns[index] ? hns[index](res) : res;
      };
    }

    return function () {
      var res = cur.apply(void 0, arguments);
      return hns[index] ? hns[index](res) : res;
    };
  };

  return fns.reduce(reduce, null);
}

var _default = useCompose;
exports.default = _default;