diff --git a/dist/de/generic.d.ts b/dist/de/generic.d.ts
index 3db19cd..6fe9bfb 100644
--- a/dist/de/generic.d.ts
+++ b/dist/de/generic.d.ts
@@ -11,5 +11,6 @@ export declare class GenericVisitor<T> implements Visitor<T> {
     visitSymbol(value: symbol): T;
     visitNull(): T;
     visitObject(access: MapAccess): T;
+    visitClass(name: string, value: MapAccess): T;
     visitIterable(access: IterableAccess): T;
 }
diff --git a/dist/de/generic.js b/dist/de/generic.js
index 43c3286..e00c467 100644
--- a/dist/de/generic.js
+++ b/dist/de/generic.js
@@ -91,6 +91,10 @@ class GenericVisitor {
         }
         return result;
     }
+    visitClass(name, value) {
+        console.log(name, '!!!!!!');
+        return this.visitObject(value);
+    }
     visitIterable(access) {
         const result = new Array(access.sizeHint());
         let element;
diff --git a/dist/de/impl.js b/dist/de/impl.js
index 4493749..629567d 100644
--- a/dist/de/impl.js
+++ b/dist/de/impl.js
@@ -6,7 +6,7 @@ const generic_1 = require("./generic");
 function deserializeWith(deserializer, into, options) {
     const visitor = new generic_1.GenericVisitor();
     const target = new into();
-    const obj = deserializer.deserializeObject(visitor);
+    const obj = deserializer.deserializeClass(into.name, visitor);
     const newObject = {};
     for (const property in target) {
         const name = options.getPropertyName(property, options_1.Stage.Deserialize);
diff --git a/dist/de/interface.d.ts b/dist/de/interface.d.ts
index aca1ddf..9f635f0 100644
--- a/dist/de/interface.d.ts
+++ b/dist/de/interface.d.ts
@@ -33,6 +33,7 @@ export interface Visitor<T> {
     visitSymbol(value: symbol): T;
     visitNull(): T;
     visitObject(value: MapAccess): T;
+    visitClass(name: string, value: MapAccess): T;
     visitIterable?(value: IterableAccess): T;
 }
 export interface Deserializer {
@@ -44,6 +45,7 @@ export interface Deserializer {
     deserializeSymbol<T, V extends Visitor<T>>(visitor: V): T;
     deserializeNull<T, V extends Visitor<T>>(visitor: V): T;
     deserializeObject<T, V extends Visitor<T>>(visitor: V): T;
+    deserializeClass<T, V extends Visitor<T>>(name: string, visitor: V): T;
     deserializeIterable<T, V extends Visitor<T>>(visitor: V): T;
 }
 export interface Deserialize<T> {
diff --git a/dist/options.d.ts b/dist/options.d.ts
index d38ad43..310acf9 100644
--- a/dist/options.d.ts
+++ b/dist/options.d.ts
@@ -31,7 +31,7 @@ export interface SkipOptions {
 export type CustomSerializer = <T, V, S extends Serializer<T>>(value: V, serializer: S) => T;
 export type CustomDeserializer = <T, D extends Deserializer>(deserializer: D) => T;
 export interface PropertyOptions {
-    alias?: string;
+    aliases?: Set<string>;
     default?: () => any;
     flatten?: boolean;
     rename?: RenameOptions | string;
diff --git a/dist/ser/impl.js b/dist/ser/impl.js
index c571ae2..17a6543 100644
--- a/dist/ser/impl.js
+++ b/dist/ser/impl.js
@@ -17,8 +17,13 @@ function serializeEntries(serializer, value, options) {
     }
     return serializer.end();
 }
+function serializeClass(serializer, value, options) {
+    const ser = serializer.serializeClass(value.constructor.name);
+    return serializeEntries(ser, Object.entries(value), options);
+}
 function serializeObject(serializer, value, options) {
-    return serializeEntries(serializer.serializeObject(), Object.entries(value), options);
+    const ser = serializer.serializeObject();
+    return serializeEntries(ser, Object.entries(value), options);
 }
 function serializeIter(serializer, value, options) {
     let state;
@@ -47,6 +52,9 @@ function serializeWith(serializer, value, optionsGetter = defaultOptions) {
             if ((0, utils_1.isIterable)(value) && (0, utils_1.isFunction)(serializer.serializeIterable)) {
                 return serializeIter(serializer.serializeIterable(), value, options);
             }
+            else if (!(0, utils_1.isPlainObject)(value)) {
+                return serializeClass(serializer, value, options);
+            }
             else if ((0, utils_1.isFunction)(serializer.serializeObject)) {
                 return serializeObject(serializer, value, options);
             } // deliberate fallthrough when the above fail
diff --git a/dist/ser/interface.d.ts b/dist/ser/interface.d.ts
index b4a028c..af8741b 100644
--- a/dist/ser/interface.d.ts
+++ b/dist/ser/interface.d.ts
@@ -17,6 +17,7 @@ interface TypeSerializer<T> {
     serializeNull(): T;
     serializeObject(): ObjectSerializer<T>;
     serializeIterable?(): IterableSerializer<T>;
+    serializeClass(name: PropertyKey): ObjectSerializer<T>;
 }
 interface AnySerializer<T> {
     serializeAny?(value?: any): T;
diff --git a/dist/ser/interface.js b/dist/ser/interface.js
index b0fe4a5..d0a2e57 100644
--- a/dist/ser/interface.js
+++ b/dist/ser/interface.js
@@ -12,7 +12,7 @@ const TypeSerializerMethods = [
     'serializeIterable',
     'serializeNull',
     'serializeObject',
-    //'serializeClass',
+    'serializeClass',
 ];
 const AnySerializerMethods = ['serializeAny'];
 function isGenericSerializer(value) {
diff --git a/src/de/generic.ts b/src/de/generic.ts
index 24ec9ff..52d5080 100644
--- a/src/de/generic.ts
+++ b/src/de/generic.ts
@@ -48,6 +48,12 @@ export class GenericVisitor<T> implements Visitor<T> {
     return result
   }
 
+  // TODO: use global registry to deserialize classes
+  visitClass(name: string, access: MapAccess): T {
+    console.log(name, '!!!!!!')
+    return this.visitObject(access)
+  }
+
   visitIterable(access: IterableAccess): T {
     const result = new Array(access.sizeHint())
     let element
diff --git a/src/de/impl.ts b/src/de/impl.ts
index 3802642..97e7f5a 100644
--- a/src/de/impl.ts
+++ b/src/de/impl.ts
@@ -6,8 +6,12 @@ type DeserializeConstructor<T> = Deserialize<T> & { new(): Deserialize<T> }
 
 export function deserializeWith<T, D extends Deserializer, E extends DeserializeConstructor<T>>(deserializer: D, into: E, options: SerdeOptions): T {
   const visitor = new GenericVisitor<T>()
+  // options to figure out properties/fields during deserialization:
+  // offer schema decorator
+  // parse fields from javascript with acorn
+  // allow no-param constructor for initialization - this is what it does now
   const target = new into()
-  const obj = deserializer.deserializeObject(visitor) as any
+  const obj = deserializer.deserializeClass(into.name, visitor) as any
   const newObject = {} as any
 
   for (const property in target) {
diff --git a/src/de/interface.ts b/src/de/interface.ts
index d666455..fde42b9 100644
--- a/src/de/interface.ts
+++ b/src/de/interface.ts
@@ -62,6 +62,7 @@ export interface Visitor<T> {
   visitSymbol(value: symbol): T
   visitNull(): T
   visitObject(value: MapAccess): T
+  visitClass(name: string, value: MapAccess): T
   visitIterable?(value: IterableAccess): T
 }
 
@@ -74,6 +75,7 @@ export interface Deserializer {
   deserializeSymbol<T, V extends Visitor<T>>(visitor: V): T
   deserializeNull<T, V extends Visitor<T>>(visitor: V): T
   deserializeObject<T, V extends Visitor<T>>(visitor: V): T
+  deserializeClass<T, V extends Visitor<T>>(name: string, visitor: V): T
   deserializeIterable<T, V extends Visitor<T>>(visitor: V): T
 }
 
diff --git a/src/options.ts b/src/options.ts
index c8cd724..bc858af 100644
--- a/src/options.ts
+++ b/src/options.ts
@@ -42,7 +42,7 @@ export type CustomSerializer = <T, V, S extends Serializer<T>>(value: V, seriali
 export type CustomDeserializer = <T, D extends Deserializer>(deserializer: D) => T
 
 export interface PropertyOptions {
-  alias?: string
+  aliases?: Set<string>
   // deserialization only
   default?: () => any
   flatten?: boolean
diff --git a/src/ser/impl.ts b/src/ser/impl.ts
index c76ecab..75a6ac4 100644
--- a/src/ser/impl.ts
+++ b/src/ser/impl.ts
@@ -1,6 +1,6 @@
 import { IterableSerializer, ObjectSerializer, Serializable, Serializer } from './interface'
 import { SerdeOptions, Stage } from '../options'
-import { ifNull, isFunction, isIterable, Nullable, orElse } from '../utils'
+import { ifNull, isFunction, isIterable, isPlainObject, Nullable, orElse } from '../utils'
 
 const unhandledType = (serializer: any, value: any) => new TypeError(`'${serializer.constructor.name}' has no method for value type '${typeof value}'`)
 
@@ -20,8 +20,15 @@ function serializeEntries<T, K extends string, V extends Serializable, E extends
   return serializer.end()
 }
 
+function serializeClass<T, K extends string, V extends Serializable, R extends Record<K, V>>(serializer: Serializer<T>, value: R, options?: SerdeOptions) {
+  const ser = serializer.serializeClass!(value.constructor.name)
+  return serializeEntries(ser, Object.entries(value) as Iterable<[K, V]>, options)
+}
+
+
 function serializeObject<T, K extends string, V extends Serializable, R extends Record<K, V>>(serializer: Serializer<T>, value: R, options?: SerdeOptions) {
-  return serializeEntries(serializer.serializeObject!(), Object.entries(value) as Iterable<[K, V]>, options)
+  const ser = serializer.serializeObject!()
+  return serializeEntries(ser, Object.entries(value) as Iterable<[K, V]>, options)
 }
 
 function serializeIter<T, V extends Iterable<any>>(serializer: IterableSerializer<T>, value: V, options?: SerdeOptions) {
@@ -61,6 +68,8 @@ export function serializeWith<T>(serializer: Serializer<T>, value: Serializable,
       const options = optionsGetter(value)
       if (isIterable(value) && isFunction(serializer.serializeIterable)) {
         return serializeIter(serializer.serializeIterable(), value, options)
+      } else if (!isPlainObject(value)) {
+        return serializeClass(serializer, value as Record<PropertyKey, any>, options)
       } else if (isFunction(serializer.serializeObject)) {
         return serializeObject(serializer, value as Record<PropertyKey, any>, options)
       } // deliberate fallthrough when the above fail
diff --git a/src/ser/interface.ts b/src/ser/interface.ts
index 5d9996a..fd1c3f2 100644
--- a/src/ser/interface.ts
+++ b/src/ser/interface.ts
@@ -21,7 +21,7 @@ const TypeSerializerMethods = [
   'serializeIterable',
   'serializeNull',
   'serializeObject',
-  //'serializeClass',
+  'serializeClass',
 ] as const
 
 interface TypeSerializer<T> {
@@ -34,7 +34,7 @@ interface TypeSerializer<T> {
   serializeObject(): ObjectSerializer<T>
   // serializeMap?(): ObjectSerializer<T>
   serializeIterable?(): IterableSerializer<T>
-  //serializeClass(name: PropertyKey): ObjectSerializer<T>
+  serializeClass(name: PropertyKey): ObjectSerializer<T>
 }
 
 const AnySerializerMethods = ['serializeAny']