once-upon

Executes a callback once upon the first of a list of events

#once-upon

Executes a callback at most once upon the first of any number of events.

var once = require('once-upon'); var E = require('events').EventEmitter;

onceUpon('SIGINT SIGTERM', process, function(){ console.log('I will be called at most once'); });

process.emit('SIGTERM'); // "I will be called at most once"

> npm install once-upon

MIT