For an additional completeness’ sake, here’s the PyScript + p5*js version: 
https://PyScript.com/@gotoloop/ramer-douglas-peucker
https://GoToloop.PyScriptApps.com/ramer-douglas-peucker
https://GoToloop.PyScriptApps.com/ramer-douglas-peucker/latest/js.html