fix type errors hopefully *fingerscrossed*

db/booking.ts

@@ -1,6 +1,7 @@
 import * as mongoose from 'mongoose'
 import { v4 as uuidv4 } from 'uuid'
 import { dateFormatBackend, getDays, nowInTz } from '../helpers/date'
+
 import { Bill } from './bill'
 import { Booker } from './booker'
 import { BOOKING_STATUS } from './enums'
@@ -49,13 +50,23 @@ const BookingSchema = new mongoose.Schema<BookingDocument>(
       type: Date,
       required: true,
       get: dateFormatBackend,
-      min: nowInTz(),
+      validate: {
+        validator: function (v: Date) {
+          return v >= nowInTz()
+        },
+        message: (props: { value: Date }) => `${props.value} is in the past`,
+      },
     },
     endDate: {
       type: Date,
       required: false,
       get: dateFormatBackend,
-      min: nowInTz(),
+      validate: {
+        validator: function (v: Date) {
+          return v >= nowInTz()
+        },
+        message: (props: { value: Date }) => `${props.value} is in the past`,
+      },
     },
     days: {
       type: [String],