Event Emitter Grouped

Emit events in serial or parallel with support for synchronous and asynchronous listeners

Usage

// Importer
var EventEmitterGrouped = require('event-emitter-grouped')
// Instantiate a new instance
var emitter = new EventEmitterGrouped()
// Bind an asynchronous event
emitter.on('hello', function (next) {
    console.log('\tasync started')
    setTimeout(function () {
        console.log('\tasync finished')
        next()
    }, 1000)
})
// Bind a synchronous event
emitter.on('hello', function () {
    console.log('\tsync started and finished')
})
// Bind a prioritized event
function vipListener() {
    console.log('\tvip started and finished')
}
vipListener.priority = 1
emitter.on('hello', vipListener)
// Emit the events in serial (one after the other in a waiting fashion)
console.log('hello in serial started')
emitter.emitSerial('hello', function (err) {
    console.log('hello in serial finished')
    // Emit the events in parallel (all at once)
    console.log('hello in parallel started')
    emitter.emitParallel('hello', function (err) {
        console.log('hello in parallel finished')
    })
})
/* Outputs:
hello in serial started
    vip started and finished
    async started
    async finished
    sync started and finished
hello in serial finished
hello in parallel started
    vip started and finished
    async started
    sync started and finished
    async finished
hello in parallel finished
*/

Install

npm

Install: npm install --save event-emitter-grouped
Import: import * as pkg from ('event-emitter-grouped')
Require: const pkg = require('event-emitter-grouped')

jspm

<script type="module">
    import * as pkg from '//dev.jspm.io/event-emitter-grouped@6.7.0'
</script>

Editions

This package is published with the following editions:

event-emitter-grouped aliases event-emitter-grouped/index.cjs which uses the Editions Autoloader to automatically select the correct edition for the consumer’s environment
event-emitter-grouped/source/index.js is ESNext source code for Node.js 6 || 8 || 10 || 12 || 14 || 16 || 18 || 20 || 21 with Require for modules
event-emitter-grouped/edition-browsers/index.js is ESNext compiled for web browsers with Require for modules
event-emitter-grouped/edition-node-4/index.js is ESNext compiled for Node.js 4 || 6 || 8 || 10 || 12 || 14 || 16 || 18 || 20 || 21 with Require for modules

This project provides its type information via inline JSDoc Comments. To make use of this in TypeScript, set your maxNodeModuleJsDepth compiler option to 5 or thereabouts. You can accomplish this via your tsconfig.json file like so:

{
  "compilerOptions": {
    "maxNodeModuleJsDepth": 5
  }
}

History

Discover the release history by heading on over to the HISTORY.md file.

Backers

Code

Discover how to contribute via the CONTRIBUTING.md file.

Authors

Benjamin Lupton — Accelerating collaborative wisdom.

Maintainers

Benjamin Lupton — Accelerating collaborative wisdom.

Contributors

Finances

Donors

License

Unless stated otherwise all works are:

and licensed under:

Artistic License 2.0