Jsonifiable schemas work

src/jsonifiable/schema/bigint.ts

@@ -1,20 +1,28 @@
+import { Opaque } from "type-fest"
 import { z } from "zod"
+import { identity } from "../../util"
+
+
+export type JsonifiedBigInt = Opaque<string, "@thilawyn/schemable-class/JsonifiedBigInt">
 
 
 export function jsonifyBigIntSchema<S extends z.ZodBigInt>(schema: S) {
-    return schema.transform(v => v.toString())
+    return schema.transform(v => v.toString() as JsonifiedBigInt)
 }
 
 export function dejsonifyBigIntSchema<S extends z.ZodBigInt>(schema: S) {
     return z
-        .string()
-        .transform(v => {
-            try {
-                return BigInt(v)
-            }
-            catch (e) {
-                return v
-            }
-        })
-        .pipe(schema)
+        .custom<JsonifiedBigInt>(identity)
+        .pipe(z
+            .string()
+            .transform(v => {
+                try {
+                    return BigInt(v)
+                }
+                catch (e) {
+                    return v
+                }
+            })
+            .pipe(schema)
+        )
 }

src/jsonifiable/schema/date.ts

@@ -1,20 +1,28 @@
+import { Opaque } from "type-fest"
 import { z } from "zod"
+import { identity } from "../../util"
+
+
+export type JsonifiedDate = Opaque<string, "@thilawyn/schemable-class/JsonifiedDate">
 
 
 export function jsonifyDateSchema<S extends z.ZodDate>(schema: S) {
-    return schema.transform(v => v.toString())
+    return schema.transform(v => v.toString() as JsonifiedDate)
 }
 
 export function dejsonifyDateSchema<S extends z.ZodDate>(schema: S) {
     return z
-        .string()
-        .transform(v => {
-            try {
-                return new Date(v)
-            }
-            catch (e) {
-                return v
-            }
-        })
-        .pipe(schema)
+        .custom<JsonifiedDate>(identity)
+        .pipe(z
+            .string()
+            .transform(v => {
+                try {
+                    return new Date(v)
+                }
+                catch (e) {
+                    return v
+                }
+            })
+            .pipe(schema)
+        )
 }

src/jsonifiable/schema/decimal.ts

@@ -1,25 +1,33 @@
 import { Decimal } from "decimal.js"
+import { Opaque } from "type-fest"
 import { z } from "zod"
+import { identity } from "../../util"
+
+
+export type JsonifiedDecimal = Opaque<string, "@thilawyn/schemable-class/JsonifiedDecimal">
 
 
 export function jsonifyDecimalSchema<
     S extends z.ZodType<Decimal, z.ZodTypeDef, Decimal>
 >(schema: S) {
-    return schema.transform(v => v.toJSON())
+    return schema.transform(v => v.toJSON() as JsonifiedDecimal)
 }
 
 export function dejsonifyDecimalSchema<
     S extends z.ZodType<Decimal, z.ZodTypeDef, Decimal>
 >(schema: S) {
     return z
-        .string()
-        .transform(v => {
-            try {
-                return new Decimal(v)
-            }
-            catch (e) {
-                return v
-            }
-        })
-        .pipe(schema)
+        .custom<JsonifiedDecimal>(identity)
+        .pipe(z
+            .string()
+            .transform(v => {
+                try {
+                    return new Decimal(v)
+                }
+                catch (e) {
+                    return v
+                }
+            })
+            .pipe(schema)
+        )
 }

src/tests.ts

@@ -1,8 +1,7 @@
 import { pipeInto } from "ts-functional-pipe"
 import { z } from "zod"
 import { extendSchemableClass, makeSchemableClass, newSchemable } from "."
-import { dejsonifySchemable, makeJsonifiableSchemableClass } from "./jsonifiable"
-import { dejsonifyBigIntSchema, jsonifyBigIntSchema } from "./legacy/jsonifiable"
+import { dejsonifyBigIntSchema, dejsonifySchemable, jsonifyBigIntSchema, makeJsonifiableSchemableClass } from "./jsonifiable"
 
 
 const UserLevel = z.enum(["User", "Admin"])
@@ -10,9 +9,9 @@ const UserLevel = z.enum(["User", "Admin"])
 
 const UserProto = makeSchemableClass({
     schema: z.object({
-        id: z.bigint(),
-        name: z.string(),
-        level: UserLevel,
+        id:     z.bigint(),
+        name:   z.string(),
+        level:  UserLevel,
     }),
 
     defaultValues: {
@@ -44,7 +43,7 @@ class User extends pipeInto(
         dejsonifySchema: ({ schema, shape }) => schema.extend({
             id: dejsonifyBigIntSchema(shape.id)
         }),
-    })
+    }),
 ) {}
 
 

src/util.ts

@@ -3,6 +3,11 @@ import { AbstractClass, Class as ConcreteClass } from "type-fest"
 import { z } from "zod"
 
 
+export function identity<T>(value: T) {
+    return value
+}
+
+
 export type ClassType = "AbstractClass" | "Class"
 
 export type Class<