Which web-ide you use? There is (at least) the in-browser version at https://www.espruino.com/ide/ You need to enable web-serial, and that requires a recent chrome-based browser (for example Edge and Vivaldi does work)
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Which web-ide you use? There is (at least) the in-browser version at https://www.espruino.com/ide/ You need to enable web-serial, and that requires a recent chrome-based browser (for example Edge and Vivaldi does work)
There is the Chrome web app https://chrome.google.com/webstore/detail/espruino-web-ide/bleoifhkdalbjfbobjackfdifdneehpo (should work without any extra steps)
And there is the native NWJS based app (that should also work without extra steps)