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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.
@Uhv
I had copied the node_modules with installed acorn from the npm's folder to catalog ..\EspruinoCompiler-master.
The error went away, the server runs (in browser at the address localhost:32766, I see the the message Espruino compilation server), but compiling isn't performed :-( The function is sended to Espruino as javascript code, not as native code