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   Sergey Shandar (functionalscript@techhub.social)'s status on Tuesday, 31-Dec-2024 03:19:50 JST Sergey Shandar

   in reply to

   • Axel Rauschmayer

   @rauschma, agreed. But I have that feeling that we made a wrong turn in programming languages and/or software design principles when we started deep-cloning instances of non-serializable user-defined nominal classes.

   • Embed this notice
     Axel Rauschmayer (rauschma@fosstodon.org)'s status on Tuesday, 31-Dec-2024 03:19:51 JST Axel Rauschmayer

     It’s a shame that JavaScript still has no built-in support for equality checks and that its support for cloning (not part of ECMAScript, but supported by virtually all platforms) has significant limitations—e.g., the clone of an instance of C is not an instance of C:

     class C {}
     const clone = structuredClone(new C());

     assert.equal(clone instanceof C, false);
     assert.equal(
     Object.getPrototypeOf(clone),
     Object.prototype
     );

     More information: https://2ality.com/2022/01/structured-clone.html

     #JavaScript