2.0.0

• 🎨 Rewritten the code from scratch using ES6.
• 💥 Breaking: the done method was renamed into call
• 💥 Breaking: the callback method was renamed into done
• 💥 Breaking: the isWaiting field was renamed into waiting
• 💥 Breaking: the isDone field was renamed into is_done
• 🔥 Deprecated add
• 🔥 Deprecated wait
• 💡 Added the check method which returns true when the async function should not be called again (so, you will call this method using if (cb.check(fn)) { return; }). This makes the wait functionality obsolete.

New example

// Dependencies
const CallbackBuffering = require("cb-buffer");

// Create a new callback buffer
var cb = new CallbackBuffering();

// Callbacks a random unique number after 1 sec
function getUniqueRandomNumberAsync(callback) {
    if (cb.check(callback)) { return; }
    setTimeout(() => {
        debugger
        cb.done(Math.random());
    }, 1000);
}

// Request the unique number few times.
// It should be unique, and generated once
getUniqueRandomNumberAsync(console.log);
getUniqueRandomNumberAsync(console.log);
getUniqueRandomNumberAsync(console.log);
getUniqueRandomNumberAsync(console.log);
// ... after one second
// => 0.3639475910458714
// => 0.3639475910458714
// => 0.3639475910458714
// => 0.3639475910458714

// After one second (after the random number is found)
// we request it again
setTimeout(() => {
    getUniqueRandomNumberAsync(console.log);
    // => 0.3639475910458714
}, 1000);