missing feature: multithreading libs (like Due Scheduler)

hello, as these 2 Arduino multithreading libs https://github.com/arduino-libraries/Scheduler (Zero, M0, Due) https://github.com/mikaelpatel/Arduino-Scheduler (professed: AVR+ARM core) do not work with ESP8266, which multithreading libs do you provide which work for the ESP8266 nodeMCU?