This PR introduces new class transformation functionstypia.misc.classTransform<T>() andtypia.misc.assertClassTransform<T>() that convert plain objects into proper class instances with correct prototype chains.

Problem

Previously, there was no way to transform plain objects (like JSON data) into class instances while maintaining the class prototype chain and methods. This is commonly needed when:

• Deserializing JSON data into class instances
• Converting API responses to strongly-typed class objects
• Transforming plain objects while preserving class methods

Solution

The implementation generates optimized transformation code at compile-time that:

1. Creates proper class instances usingObject.create(ClassName.prototype)
2. Assigns input properties viaObject.assign(instance, input)
3. Maintains prototype chain soinstanceof checks work correctly
4. Preserves class methods on the transformed instances

Usage Example

classUser{constructor(publicname:string,publicage:number){}greet():string{return`Hello,${this.name}!`;}}constplainData={name:"John",age:30};// Transform to proper class instanceconstuser=typia.misc.classTransform<User>(plainData);console.log(userinstanceofUser);// trueconsole.log(user.greet());// "Hello, John!"// With type assertionconstvalidatedUser=typia.misc.assertClassTransform<User>(plainData);

Technical Details

• Uses TypeScript AST transformation for compile-time code generation
• Analyzes class metadata to determine proper instantiation strategy
• Generates optimized runtime code without reflection overhead
• Integrates with existing typia validation and assertion patterns

Fixes#683

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