class Wait<T = void> {  
    private _resolve: ((value: T) => void) | null = null;  

    public wait(): Promise<T> {  
        return new Promise(resolve => this._resolve = resolve);  
    }  
    public resolve(value: T): void {  
        if (this._resolve) {  
            this._resolve(value);  
            this.dispose(); 
        }  
    }
    public dispose():void{
        this._resolve=null;
    }
}
export default function get_new_wait<T = void>(): Wait<T> {  
    return new Wait<T>();  
}