callback-count
0.2.0 • Public • Published callback-count 
Count callbacks before continuing, tiny control flow helper, allows dynamic counting.
Flow control
var callbackCount = require('callback-count');
var counter = callbackCount(done);
setTimeout(counter.inc().next, 100);
setTimeout(counter.inc().next, 100);
function done (err) {
console.log('finished.');
}
.inc() allows you to dynamically update the number of callbacks you are expecting.
var callbackCount = require('callback-count');
var counter = callbackCount(done);
counter.inc().inc().inc();
counter.next().next().next();
function done (err) {
console.log('finished.');
}
The constructor can take an initial value for the count expected
var callbackCount = require('callback-count');
var counter = callbackCount(3, done);
counter.next().next().next();
function done (err) {
console.log('finished.');
}
.next() decrements the count and callsback when the count has reached 0
var counter = createCounter(3, done);
counter.next().next().next();
function done (err) {
console.log(counter.count);
console.log('finished.');
}
if .next() receives an error it will callback immediately
var counter = createCounter(3, done);
counter.next(new Error('boom'));
function done (err) {
console.log(err.message);
}
License: MIT
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