init: options => {

        // We are checking to avoid calling 'attach' more than once,
        // without calling 'detach', as it will throw an error;

        if (attached) {
            return; // shouldn't call it more than once;
        }
        attached = true;

        if ($DEV) {

            // In a DEV environment, we attach to all supported events:

            pgMonitor.attach(options);

        } else {

            // In a PROD environment we should only attach to the type of events
            // that we intend to log. And we are only logging event 'error' here:

            pgMonitor.attach(options, ['error']);
        }
    },

import * as pgp from "pg-promise"
import * as monitor from "pg-monitor"
import * as Promise from "bluebird"
import * as range from "pg-range"

const options = {
    promiseLib: Promise
};

monitor.attach(options);

const pgpInstance = pgp(options);
range.install(pgpInstance.pg);

var client : pgp.IDatabase<any> = null;

export function initialize(connectionString: string) {
    client = pgpInstance(connectionString);
}

export function getClient() {
    return client;
}

            logText = os.EOL + logText; // add another line break in front;
        }
        fs.appendFileSync(logFile, logText); // add error handling as required;
    }

    // We absolutely must not let the monitor write anything into the console
    // while in a PROD environment, and not just because nobody will be able
    // to see it there, but mainly because the console is incredibly slow and
    // hugely resource-consuming, suitable only for debugging.

    if (!$DEV) {
        // If it is not a DEV environment:
        info.display = false; // display nothing;
    }

});

export = {
    // Monitor initialization function;
    init(options: IOptions<any>) {
        if ($DEV) {
            // In a DEV environment, we attach to all supported events:
            pgMonitor.attach(options);
        } else {
            // In a PROD environment we should only attach to the type of events
            // that we intend to log. And we are only logging event 'error' here:
            pgMonitor.attach(options, ['error']);
        }
    }
};