fix(dashboard): Fix minor issues with Reservations and Inventroy Create forms (#8657)

packages/admin-next/dashboard/src/lib/form-helpers.ts

@@ -1,6 +1,6 @@
 import { castNumber } from "./cast-number"
 
-export function parseOptionalFormValue<T>(
+export function transformNullableFormValue<T>(
   value: T,
   nullify = true
 ): T | undefined | null {
@@ -16,20 +16,21 @@ export function parseOptionalFormValue<T>(
 }
 
 type Nullable<T> = { [K in keyof T]: T[K] | null }
+type Optional<T> = { [K in keyof T]: T[K] | undefined }
 
-export function parseOptionalFormData<T extends Record<string, unknown>>(
-  data: T,
-  nullify = true
-): Nullable<T> {
+export function transformNullableFormData<
+  T extends Record<string, unknown>,
+  K extends boolean = true
+>(data: T, nullify: K = true as K): K extends true ? Nullable<T> : Optional<T> {
   return Object.entries(data).reduce((acc, [key, value]) => {
     return {
       ...acc,
-      [key]: parseOptionalFormValue(value, nullify),
+      [key]: transformNullableFormValue(value, nullify),
     }
-  }, {} as Nullable<T>)
+  }, {} as K extends true ? Nullable<T> : Optional<T>)
 }
 
-export function parseOptionalFormNumber(
+export function transformNullableFormNumber(
   value?: string | number,
   nullify = true
 ) {
@@ -46,3 +47,21 @@ export function parseOptionalFormNumber(
 
   return value
 }
+
+type NullableNumbers = Record<string, number | null>
+type OptionalNumbers = Record<string, number | undefined>
+
+export function transformNullableFormNumbers<
+  T extends Record<string, string | number | undefined>,
+  K extends boolean = true
+>(
+  data: T,
+  nullify: K = true as K
+): K extends true ? NullableNumbers : OptionalNumbers {
+  return Object.entries(data).reduce((acc, [key, value]) => {
+    return {
+      ...acc,
+      [key]: transformNullableFormNumber(value, nullify),
+    }
+  }, {} as K extends true ? NullableNumbers : OptionalNumbers)
+}