Proposal: Type-only .property<T> in Embind (generate TS only, no getter/setter)

[mkl-ableton]

Hi all,

I’d like to propose a type-only property option in Embind that emits TypeScript declarations for class properties without requiring a getter or setter or generating any runtime code.

Motivation

I’m mirroring a C++ data structure on the JS side and updating a JS object from C++ whenever the C++ object changes (using my own plumbing). I don’t need Embind to wire up accessors; I only need accurate .d.ts declarations.

Proposed API

Extend class_<T> with a type-only property form:

class_<MyClass>("MyClass")
  .property<int>("foo"); // type-only: no getter/setter, no runtime glue

Desired behavior

• Emit only the TypeScript declaration in the generated .d.ts:

  declare class MyClass {
    foo: number;
  }

• No JS runtime emitted for the property (no Object.defineProperty, no
  prototype wiring).

If this direction makes sense, I can prepare a patch (with docs/tests). If there’s an existing hook for declaration-only members, I’d appreciate pointers.

Thanks!

[sbc100]

@brendandahl