Battery drain with 2v06

const _GB = global.GB;
global.GB = (event) => {
  if (event.t==="weather") update(event);
  if (_GB) setTimeout(_GB, 0, event);
};

Does anyone know where this code is called from? I can't see a reference to GB function
Looked in weather app and gbridge app. Hmmm

EDIT: Found an answer : http://forum.espruino.com/conversations/345459/