guard

Trivial guard: triggers callback when internal counter reaches 0.

API

Create ``guard` passing callback function. Call `on()` and `off()` to increase and
decrease internal counter.

g = guard(function() {
console.log('Done...')
});
g.on();
g.on();
g.off();
g.off(); // prints 'Done...'

You can initialize the counter when creating a new guard.

g = guard(function() {
console.log('Done...')
}, 2);
g.on();
// call off 3 times
g.off();
g.off();
g.off(); // prints 'Done...'


In addition to done callback you can setup callbacks when counter reaches a certain value during
on or off`

g = guard()
.onCallback(100, function() {
// called when internal counter is 100 after increment
})
.offCallback(10, function() {
// called when internal counter is 10 after decrement
});

License

MIT