napi unwrap

napi_status napi_unwrap(napi_env env,
                        napi_value js_object,
                        void** result);

• [in] env: The environment that the API is invoked under.
• [in] js_object: The object associated with the native instance.
• [out] result: Pointer to the wrapped native instance.

Returns napi_ok if the API succeeded.

Retrieves a native instance that was previously wrapped in a JavaScript object using napi_wrap().

When JavaScript code invokes a method or property accessor on the class, the corresponding napi_callback is invoked. If the callback is for an instance method or accessor, then the this argument to the callback is the wrapper object; the wrapped C++ instance that is the target of the call can be obtained then by calling napi_unwrap() on the wrapper object.