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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'm not sure I really understand the question... If you want to use arrays of arrays, you could just write a small bit of code to convert them into one single array before sending.
You might also be able to use
lodashdirectly - I haven't looked at it (it's possible it's too big though).