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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
I believe it's because you have 'Save on send' turned on?
It's a known issue that I have fixed in the Espruino IDE. It just hasn't made it into the Native and Chrome Apps yet - but it's nothing to worry about unless you're trying to upload extremely big files.