Get Object by condition in reacjjs

i have a file jsx like

const Routes = {
    item: '/Dev/Item',
    count: '/Dev/Count',
};

module.exports = Routes;

i want the object in condition wise like

if(true){
    const Routes = {
        item: '/Dev/Item',
        count: '/Dev/Count',
    };
}
else{
  const Routes = {
        item: '/Prod/Item',
        count: '/Prod/Count',
    };
}

module.exports = Routes;

i can import this file at any component and can access Route.item or Route.Count how can i do this with if Else?