var taskGenerator = *function(tasks) {
    var length = tasks.length;
    var i = 0;
    while(length > i) {
        yield tasks[i];
        if(length !== tasks.length) {
            length = tasks.length;
        }
        i++;
    }
}

const CONSUME = 1;
const PAUSE = 0;

class {

_buffer = [];

state = PAUSE;

constructor() {
    this.tasks = tasksGenerator(this._buffer)
}

add () {
    this.buffer.push({});
}

pause() {
    this.state = PAUSE;
}


resume() {
    this.state = CONSUME;
}

}