RunKit + npm: ondo

let event = require("ondo")(); event.on('hello',() => console.log('hello')); event.on('world',() => console.log('world')); event.do('hello').do('world'); event.on('greet', function(){ this.do('hello').do('world') }); event.do('greet'); event.off('greet'); event.do('greet'); event.on("withContext", function(){ console.log(this) }, {"installed": "context"}); event.do("withContext"); event.do("withContext", {"modified": "context"});