const queries = {
    getRoom(state: State, roomID: string) {
        return state.rooms[roomID]
    },
    isPlayerInRoom(state: State, roomID: string) {
        return state.player.roomID === roomID
    }
}

const newQueries = {}
for (const [name, func] = Object.entries(queries)) {
    newQueries[name] = (...args) => func(store.getState(), ...args)
}
...
newQueries.getRoom(5)