@fluent-windows/hooks/useAction/subscribers.js

Fluent-Windows React hooks.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.subscribe = subscribe;
exports.unsubscribe = unsubscribe;
exports.dispatch = dispatch;
var subscribers = new Map();

function getAction(type) {
  return subscribers.get(type);
}

function subscribe(type, callback) {
  if (!type || !callback) return;
  if (!subscribers.has(type)) subscribers.set(type, new Set());
  getAction(type).add(callback);
}

function unsubscribe(type, callback) {
  if (!type || !callback) return;
  if (!subscribers.has(type)) return;
  getAction(type)["delete"](callback);
  if (getAction(type).size === 0) subscribers["delete"](type);
}

function dispatch(param) {
  var _ref = param,
      type = _ref.type,
      payload = _ref.payload;
  if (!type) return;
  if (!subscribers.has(type)) return;
  getAction(type).forEach(function (callback) {
    callback.call(undefined, payload);
  });
}