[SOLVED] JavaScript modules

Yep, the easiest way is using: https://www.espruino.com/Modules#from-storage

require("Storage").write("answer",`
exports.get = function() {
  return 42;
};`)
print(require("answer").get());
// prints 42

Rather than using require("Storage").write you can use the down-arrow by the Web IDE's Upload button to choose Storage and then the module filename you want - then you can upload directly.