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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.
@allObjects
...line # 18 will never be executed...
Since you have a complete filled loop, you can let go of the loop of 1..<10... just do the line. Furthermore, require is a lookup - fast but still a look up, therefore get it into a variable at the beginning w/
var np = require("neopixel");.