Option jsonification work

src/schema/jsonified/decimal.ts

@@ -1,19 +1,19 @@
 import { Decimal } from "decimal.js"
-import { identity } from "lodash-es"
-import { Opaque } from "type-fest"
 import { z } from "zod"
 
 
-export type JsonifiedDecimal = Opaque<string, "@thilawyn/zod-schema-class/JsonifiedDecimal">
+export type JsonifiedDecimalBrand = "@thilawyn/zod-schema-class/JsonifiedDecimal"
 
 
 export function jsonifyDecimalSchema<S extends z.ZodType<Decimal>>(schema: S) {
-    return schema.transform(v => v.toJSON() as JsonifiedDecimal)
+    return schema
+        .transform(v => v.toJSON())
+        .brand<JsonifiedDecimalBrand>()
 }
 
 export function dejsonifyDecimalSchema<S extends z.ZodType<Decimal>>(schema: S) {
     return z
-        .custom<JsonifiedDecimal>(identity)
+        .custom<string & z.BRAND<JsonifiedDecimalBrand>>()
         .pipe(
             z
                 .string()