raid-addons/lib/hook.js

Add-ons functions for use with Raid

"use strict";

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

var _utils = require("./utils");

/**
 * Creates a hook that runs on every emit and matches on an event
 * type predicate
 */
var hook = function hook(fn) {
  var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  var predicate = opts.predicate || null;
  var match = (0, _utils.check)(predicate);
  return function (state, event) {
    var type = typeof event === 'string' || (0, _utils.isFn)(predicate) ? event : event.type;
    return match(type) ? fn(state, event) : state;
  };
};

var _default = hook;
exports["default"] = _default;