napi open callback scope

NAPI_EXTERN napi_status napi_open_callback_scope(napi_env env,
                                                 napi_value resource_object,
                                                 napi_async_context context,
                                                 napi_callback_scope* result)

• [in] env: The environment that the API is invoked under.
• [in] resource_object: An object associated with the async work that will be passed to possible async_hooks [init hooks][]. This parameter has been deprecated and is ignored at runtime. Use the async_resource parameter in [napi_async_init][] instead.
• [in] context: Context for the async operation that is invoking the callback. This should be a value previously obtained from [napi_async_init][].
• [out] result: The newly created scope.

There are cases (for example, resolving promises) where it is necessary to have the equivalent of the scope associated with a callback in place when making certain N-API calls. If there is no other script on the stack the [napi_open_callback_scope][] and [napi_close_callback_scope][] functions can be used to open/close the required scope.