How to use the blgr.global function in blgr

constructor(options) {
    this.logger = Logger.global;
    this.resolve = dns.lookup;
    this.prefix = null;
    this.dnsKnown = [];

    this.known = new Map();
    this.authorized = [];

    this.init(options);
  }

constructor(options) {
    super(RES_OPT);

    this.ra = false;
    this.edns = true;
    this.dnssec = true;
    this.icann = new RootResolver(RES_OPT);

    this.logger = Logger.global;
    this.key = secp256k1.privateKeyGenerate();
    this.host = '127.0.0.1';
    this.port = 5300;
    this.lookup = null;
    this.publicHost = '127.0.0.1';

    this.cache = new RootCache(3000);

    this.initNode();

    if (options)
      this.initOptions(options);
  }

constructor(logger) {
    super();

    this.logger = Logger.global;

    this.minTrackedFee = MIN_FEERATE;
    this.minTrackedPri = MIN_PRIORITY;

    this.feeStats = new ConfirmStats('FeeRate');
    this.priStats = new ConfirmStats('Priority');

    this.feeUnlikely = 0;
    this.feeLikely = INF_FEERATE;
    this.priUnlikely = 0;
    this.priLikely = INF_PRIORITY;

    this.map = new BufferMap();
    this.bestHeight = 0;

    if (policy.MIN_RELAY >= MIN_FEERATE)

constructor(options) {
    this.network = Network.primary;
    this.logger = Logger.global;
    this.resolve = dns.lookup;
    this.host = '0.0.0.0';
    this.port = this.network.port;
    this.services = common.LOCAL_SERVICES;
    this.onion = false;
    this.banTime = common.BAN_TIME;

    this.address = new NetAddress();
    this.address.services = this.services;
    this.address.time = this.network.now();

    this.seeds = this.network.seeds;
    this.nodes = [];

    this.maxBuckets = 20;
    this.maxEntries = 50;

constructor (options) {
    this.network = Network.primary;
    this.logger = Logger.global;
    this.msdb = null;
    this.whttp = null;
    this.version = '0.0.0';

    this.apiKey = base58.encode(random.randomBytes(20));
    this.apiHash = sha256.digest(Buffer.from(this.apiKey, 'ascii'));
    this.adminToken = random.randomBytes(32);
    this.serviceHash = this.apiHash;
    this.noAuth = false;
    this.walletAuth = false;
    this.cors = false;

    this.fromOptions(options);
  }

constructor(options) {
    this.network = Network.primary;
    this.logger = Logger.global;
    this.client = null;

    this.prefix = null;
    this.location = null;
    this.memory = true;
    this.compression = true;
    this.cacheSize = 8 << 20;
    this.maxFiles = 64;

    this.fromOptions(options);
  }

constructor(options) {
    this.network = Network.primary;
    this.logger = Logger.global;
    this.workers = null;

    this.prefix = null;
    this.location = null;
    this.treeLocation = null;
    this.memory = true;
    this.maxFiles = 64;
    this.cacheSize = 32 << 20;
    this.compression = true;

    this.spv = false;
    this.prune = false;
    this.indexTX = false;
    this.indexAddress = false;
    this.forceFlags = false;

constructor(options) {
    this.network = Network.primary;
    this.logger = Logger.global;

    this.createSocket = tcp.createSocket;
    this.version = common.PROTOCOL_VERSION;
    this.services = common.LOCAL_SERVICES;
    this.agent = common.USER_AGENT;
    this.identityKey = common.ZERO_KEY;
    this.noRelay = false;
    this.spv = false;
    this.compact = false;
    this.headers = false;
    this.banScore = common.BAN_SCORE;

    this.getHeight = PeerOptions.getHeight;
    this.isFull = PeerOptions.isFull;
    this.createNonce = PeerOptions.createNonce;
    this.hasNonce = PeerOptions.hasNonce;

constructor(options) {
    this.network = Network.primary;
    this.logger = Logger.global;
    this.workers = null;
    this.client = null;
    this.feeRate = 0;

    this.prefix = null;
    this.location = null;
    this.memory = true;
    this.maxFiles = 64;
    this.cacheSize = 16 << 20;
    this.compression = true;

    this.spv = false;
    this.checkpoints = false;
    this.wipeNoReally = false;

    if (options)