src/SchemableClass.ts

@@ -0,0 +1,38 @@
+import { AbstractClass } from "type-fest"
+import { z } from "zod"
+
+
+export type SchemableClass<
+    SchemaT           extends z.ZodRawShape,
+    SchemaUnknownKeys extends z.UnknownKeysParam,
+    SchemaCatchall    extends z.ZodTypeAny,
+    SchemaValues      extends {},
+
+    DefaultValues     extends Partial<SchemaValues>,
+> = (
+    AbstractClass<
+        {
+            readonly schema: z.ZodObject<
+                SchemaT,
+                SchemaUnknownKeys,
+                SchemaCatchall,
+                SchemaValues,
+                SchemaValues
+            >
+
+            readonly defaultValues: DefaultValues
+        } & SchemaValues,
+
+        any[]
+    > & {
+        readonly schema: z.ZodObject<
+            SchemaT,
+            SchemaUnknownKeys,
+            SchemaCatchall,
+            SchemaValues,
+            SchemaValues
+        >
+
+        readonly defaultValues: DefaultValues
+    }
+)

src/extendSchemable.ts

@@ -1,102 +1,73 @@
-import { AbstractClass, Class } from "type-fest"
+import { AbstractClass } from "type-fest"
 import { z } from "zod"
+import { SchemableClass } from "."
 import { StaticMembers } from "./util"
 
 
-type SchemableClass<
-    SchemaT           extends z.ZodRawShape,
-    SchemaUnknownKeys extends z.UnknownKeysParam,
-    SchemaCatchall    extends z.ZodTypeAny,
-    SchemaValues      extends {},
-> = (
-    AbstractClass<
-        {
-            readonly schema: z.ZodObject<
-                SchemaT,
-                SchemaUnknownKeys,
-                SchemaCatchall,
-                SchemaValues,
-                SchemaValues
-            >
-        } & SchemaValues,
-
-        any[]
-    > & {
-        readonly schema: z.ZodObject<
-            SchemaT,
-            SchemaUnknownKeys,
-            SchemaCatchall,
-            SchemaValues,
-            SchemaValues
-        >
-    }
-)
-
-
 export function extendSchemable<
     C extends SchemableClass<
         ExtendSchemaT,
         ExtendSchemaUnknownKeys,
         ExtendSchemaCatchall,
-        ExtendSchemaValues
+        ExtendSchemaValues,
+        ExtendDefaultValues
     >,
 
     ExtendSchemaT           extends z.ZodRawShape,
     ExtendSchemaUnknownKeys extends z.UnknownKeysParam,
     ExtendSchemaCatchall    extends z.ZodTypeAny,
     ExtendSchemaValues      extends {},
+    ExtendDefaultValues     extends Partial<ExtendSchemaValues>,
 
     SchemaT                 extends z.ZodRawShape,
     SchemaUnknownKeys       extends z.UnknownKeysParam,
     SchemaCatchall          extends z.ZodTypeAny,
     SchemaValues            extends ExtendSchemaValues,
+    DefaultValues           extends Partial<SchemaValues>,
 >(
     extend: C | SchemableClass<
         ExtendSchemaT,
         ExtendSchemaUnknownKeys,
         ExtendSchemaCatchall,
-        ExtendSchemaValues
+        ExtendSchemaValues,
+        ExtendDefaultValues
     >,
 
-    schema: z.ZodObject<
+    schemaApplier: (schema: C["schema"]) => z.ZodObject<
         SchemaT,
         SchemaUnknownKeys,
         SchemaCatchall,
         SchemaValues,
         SchemaValues
     >,
+
+    defaultValuesApplier: (defaultValues: ExtendDefaultValues) => DefaultValues,
 ) {
+    const schema        = schemaApplier(extend.schema)
+    const defaultValues = defaultValuesApplier(extend.defaultValues)
+
     return class extends extend {
         static readonly schema = schema
                readonly schema = schema
+
+        static readonly defaultValues = defaultValues
+               readonly defaultValues = defaultValues
     } as unknown as (
-        Class<
+        AbstractClass<
-            Omit<
+            Omit<C, "schema" | "defaultValues" | keyof ExtendSchemaValues> &
-                Omit<C, "schema">,
+            {
-                keyof ExtendSchemaValues
+                readonly schema:         typeof schema,
-            > &
+                readonly defaultValues:  typeof defaultValues,
-            { readonly schema: typeof schema } &
+            } &
             SchemaValues,
 
             ConstructorParameters<C>
         > &
 
-        Omit<StaticMembers<C>, "schema"> &
+        Omit<StaticMembers<C>, "schema" | "defaultValues"> &
-        { readonly schema: typeof schema }
+        {
+            readonly schema:         typeof schema,
+            readonly defaultValues:  typeof defaultValues,
+        }
     )
 }
-
-
-const Test1Schema = z.object({ prout: z.string() })
-class Test1 {
-    static readonly schema = Test1Schema
-    readonly schema = Test1Schema
-
-    prout: string = "heugneu"
-}
-
-const Test2Schema = Test1.schema.extend({ prout: z.literal("ruquier"), ruquier: z.number() })
-const Test2 = extendSchemable(Test1, Test2Schema)
-
-Test2.schema
-new Test2().prout

src/index.ts

@@ -0,0 +1,2 @@
+export * from "./SchemableClass"
+export * from "./extendSchemable"

src/tests.ts

@@ -0,0 +1,23 @@
+import { z } from "zod"
+import { extendSchemable } from "."
+
+
+const Test1Schema = z.object({ prout: z.string() })
+class Test1 {
+    static readonly schema = Test1Schema
+    readonly schema = Test1Schema
+
+    static readonly defaultValues = { prout: "heugneu" }
+    readonly defaultValues = { prout: "heugneu" }
+
+    prout: string = "heugneu"
+}
+
+const Test2 = extendSchemable(
+    Test1,
+    schema => schema.extend({ prout: z.literal("ruquier"), ruquier: z.number() }),
+    defaultValues => ({ prout: "ruquier" as const }),
+)
+
+Test2.defaultValues
+new Test2().prout