react-native-navigation-bottom-sheet/lib/module/events.js

A performant customizable bottom sheet component made on top of wix react-native-navigation library.

/**
 * @author Luke Brandon Farrell
 * @description Event dispatcher for comunication between components.
 */

/**
 * @description events
 * @private
 */
var _events = {};
/**
 * @description add listener
 * @public
 * @param {string} name name listener
 * @param {function} func function for call
 * @returns {function} unsubscribe function
 */

export function listen(name, func) {
  if (!_events[name]) _events[name] = {
    count: 0,
    funcs: {}
  };
  const key = _events[name].count++;
  _events[name].funcs[key] = func;
  return function () {
    delete _events[name].funcs[key];
  };
}
/**
 * @description dispatch to listener
 * @public
 * @param {string} name name listener
 * @param {any} arg argument for send to listen(...)
 * @returns {void}
 */

export function dispatch(name, arg) {
  if (_events[name]) for (var func in _events[name].funcs) _events[name].funcs[func] && _events[name].funcs[func](arg);
}
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