Simple event bus with powerfull debugging tools
Installation
npm i --save bus-graph
Example
const Bus = require('bus-graph');
// callback functions for events
function callbackFirst(data){
console.log(data);
}
function callbackSecond(data){
console.log("++", data);
}
// simple example
Bus.on("FirstEvent", callbackFirst)
Bus.emit({
event: "FirstEvent",
data: [1,2,3,4]
})
// example with suscription and emittion in nested functions
function higher(){
function inner(){
Bus.on("SecondEvent", callbackSecond);
}
inner();
}
higher();
function higherEmitter(){
function innerEmitter(){
Bus.emit({
event: "SecondEvent",
data: [1,2,3,4, 5,6]
});
}
innerEmitter();
}
higherEmitter();
let meta = Bus.getMeta();
console.log(meta);Result
[ 1, 2, 3, 4 ]
++ [ 1, 2, 3, 4, 5, 6 ]
{ FirstEvent:
[ { from: undefined,
link: '(/path_to_caller_file/index.js:13:5)',
event: 'FirstEvent',
callback: 'callbackFirst',
data: undefined },
{ from: undefined,
link: '(/path_to_caller_file/index.js:15:5)',
event: 'FirstEvent',
callback: undefined,
data: [Array] } ],
SecondEvent:
[ { from: 'inner',
link: '(/path_to_caller_file/index.js:24:13)',
event: 'SecondEvent',
callback: 'callbackSecond',
data: undefined },
{ from: 'innerEmitter',
link: '(/path_to_caller_file/index.js:32:13)',
event: 'SecondEvent',
callback: undefined,
data: [Array] } ] }
Turn off debug
const Bus = require('bus-graph');
Bus.setDebug(false); // turn's off debug
// turn on debug
Bus.setDebug(true);
Bus.setDebug();
