further typing improvements

pages/api/booking/[uuid].tsx

@@ -1,13 +1,20 @@
-import { getBookingByUUID, getBookingByUUIDAsJSON } from '../../../db/index'
+import { NextApiRequest, NextApiResponse } from 'next'
+import { Booking } from '../../../db/booking'
 import { BOOKING_STATUS } from '../../../db/bookingStatus'
+import { getBookingByUUID, getBookingByUUIDAsJSON } from '../../../db/index'
 
-export default async function userHandler(req, res) {
+export default async function userHandler(
+  req: NextApiRequest,
+  res: NextApiResponse
+) {
   const {
     method,
-    query: { uuid },
+    query: { uuids },
   } = req
 
-  let booking
+  const uuid = Array.isArray(uuids) ? uuids[0] : uuids
+
+  let booking: Booking
 
   switch (method) {
     case 'GET':

pages/api/booking/index.tsx

@@ -1,12 +1,16 @@
-import { createBooking } from '../../../db/index'
 import { Error } from 'mongoose'
-
+import { NextApiRequest, NextApiResponse } from 'next'
+import { Booking } from '../../../db/booking'
+import { createBooking } from '../../../db/index'
 import { sendReceivedBookingMail } from '../../../helpers/mail'
 
-export default async function userHandler(req, res) {
+export default async function userHandler(
+  req: NextApiRequest,
+  res: NextApiResponse
+) {
   const { method } = req
 
-  let booking
+  let booking: Booking
 
   switch (method) {
     case 'POST':

pages/api/daysbooked.tsx

@@ -1,8 +1,10 @@
-// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
-
+import { NextApiRequest, NextApiResponse } from 'next'
 import { getBookedDays } from '../../db/index'
 
-export default async function useHandler(req, res) {
+export default async function useHandler(
+  req: NextApiRequest,
+  res: NextApiResponse
+) {
   const { method } = req
 
   switch (method) {