Function JSObjectSetPrivate 

pub unsafe extern "C-unwind" fn JSObjectSetPrivate(
    object: JSObjectRef,
    data: *mut c_void,
) -> bool

Available on crate features JSBase and JSObjectRef only.

Sets a pointer to private data on an object.

Parameter object: The JSObject whose private data you want to set.

Parameter data: A void* to set as the object’s private data.

Returns: true if object can store private data, otherwise false.

The default object class does not allocate storage for private data. Only objects created with a non-NULL JSClass can store private data.

Safety

• object must be a valid pointer.
• data must be a valid pointer.