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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.
@Gordon
Ok, great!
I think it happens when the Web IDE is unable to get a response from the Espruino board immediately after connecting. In that case, it doesn't know what type of board you have, so it doesn't know what modules are pre-installed and gives you warnings when it can't find them on line. Hopefully it shouldn't have affected how the code ran though.