Javascript file that maps Realm objects to Postgres schema

realmmodels.js

const Bus = {
    name: 'Bus',
    primaryKey: 'vehicle',
    properties: {
        Scheduleid: {type: 'Schedule'},
        vehicle: 'int',
        fleet_id: { type: 'string', optional: true },
        last_main: { type: 'date', optional: true }
    }
};

const Driver = {
    name: 'Driver',
    primaryKey: 'id',
    properties: {
        Busvehicle: {type: 'Bus'},
        id: 'int',
        name: { type: 'string', optional: true },
        employ_date: { type: 'date', optional: true }
    }
};

const Schedule = {
    name: 'Schedule',
    primaryKey: 'id',
    properties: {
        id: 'int',
        Routeid: {type: 'Route'},
        departure: { type: 'date', optional: true },
        arrival: { type: 'date', optional: true }
    }
};

const Route = {
    name: 'Route',
    primaryKey: 'id',
    properties: {
        id: 'string'
    }
};


module.exports = [
    Bus,
    Driver,
    Schedule,
    Route
  ];

looks like there is an issue in line 5 of this gist