A value to be given to napi_release_threadsafe_function() to indicate whether the thread-safe function is to be closed immediately (napi_tsfn_abort) or merely released (napi_tsfn_release) and thus available for subsequent use via napi_acquire_threadsafe_function() and napi_call_threadsafe_function().

    1. typedef enum {
    2.   napi_tsfn_release,
    3.   napi_tsfn_abort
    4. } napi_threadsafe_function_release_mode;