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node-red/packages/node_modules/@node-red/runtime/lib/events.js
2018-12-05 13:00:25 +00:00

44 lines
1.3 KiB
JavaScript

/*!
* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
var events = require("events");
module.exports = new events.EventEmitter();
/**
* Runtime events emitter
* @mixin @node-red/runtime_events
*/
/**
* Register an event listener for a runtime event
* @name on
* @function
* @memberof @node-red/runtime_events
* @param {String} eventName - the name of the event to listen to
* @param {Function} listener - the callback function for the event
*/
/**
* Emit an event to all of its registered listeners
* @name emit
* @function
* @memberof @node-red/runtime_events
* @param {String} eventName - the name of the event to emit
* @param {any} ...args - the arguments to pass in the event
* @return {Boolean} - whether the event had listeners or not
*/