Decimal refactoring

src/schema/decimal.ts

@@ -2,4 +2,35 @@ import Decimal from "decimal.js"
 import { z } from "zod"
 
 
-export const decimal = z.custom<Decimal>(v => Decimal.isDecimal(v))
+type JsonifiedDecimalBrand = "@thilawyn/zod-schema-class/JsonifiedDecimal"
+
+
+export function decimal() {
+    return z.custom<Decimal>(v => Decimal.isDecimal(v))
+}
+
+export module decimal {
+    export function jsonifyDecimalSchema<S extends z.ZodType<Decimal>>(schema: S) {
+        return schema
+            .transform(v => v.toJSON())
+            .brand<JsonifiedDecimalBrand>()
+    }
+
+    export function dejsonifyDecimalSchema<S extends z.ZodType<Decimal>>(schema: S) {
+        return z
+            .custom<string & z.BRAND<JsonifiedDecimalBrand>>()
+            .pipe(
+                z
+                    .string()
+                    .transform(v => {
+                        try {
+                            return new Decimal(v)
+                        }
+                        catch (e) {
+                            return v
+                        }
+                    })
+            )
+            .pipe(schema)
+    }
+}