napi create promise

napi_status napi_create_promise(napi_env env,
                                napi_deferred* deferred,
                                napi_value* promise);

• [in] env: The environment that the API is invoked under.
• [out] deferred: A newly created deferred object which can later be passed to napi_resolve_deferred() or napi_reject_deferred() to resolve resp. reject the associated promise.
• [out] promise: The JavaScript promise associated with the deferred object.

Returns napi_ok if the API succeeded.

This API creates a deferred object and a JavaScript promise.