'use strict';

class SharedResources{
    constructor(){
        this.dictionary = {};
    }

    set( key , val ){
        this.dictionary[ key ] = val;
    }

    exists( key ){
        return ( this.dictionary[ key ] != undefined );
    }

    get( key ){
        if( ! this.exists( key ) ){
            throw new Error( `Key [${key}] not defined!` );
        }
        return this.dictionary[ key ];
    }

    try_get( key ){
        if( ! this.exists( key ) ){
            return null;
        }else{
            return this.dictionary[ key ];
        }
    }

    remove( key ){
        if( this.exists(key) ){
            delete this.dictionary[ key ];
        }
    }
}

module.exports = new SharedResources();