fix(dashboard): Allow float values for product prices (#9859)

packages/admin/dashboard/src/lib/validation.ts

@@ -1,7 +1,7 @@
 import i18next from "i18next"
+import { FieldPath, FieldValues, UseFormReturn } from "react-hook-form"
 import { z } from "zod"
 import { castNumber } from "./cast-number"
-import { FieldPath, FieldValues, UseFormReturn } from "react-hook-form"
 
 /**
  * Validates that an optional value is an integer.
@@ -34,6 +34,25 @@ export const optionalInt = z
     }
   )
 
+/**
+ * Validates that an optional value is an number.
+ */
+export const optionalFloat = z
+  .union([z.string(), z.number()])
+  .optional()
+  .refine(
+    (value) => {
+      if (value === "" || value === undefined) {
+        return true
+      }
+
+      return castNumber(value) >= 0
+    },
+    {
+      message: i18next.t("validation.mustBePositive"),
+    }
+  )
+
 /**
  * Schema for metadata form.
  */