function load() {
		  var r;
		  try {
		    r = exports.storage.debug;
		  } catch(e) {}

		  // If debug isn't set in LS, and we're in Electron, try to load $DEBUG
		  if (!r && typeof process !== 'undefined' && 'env' in process) {
		    r = process.env.DEBUG;
		  }

		  return r;
		}
Parse a language from the Accept-Language header.
@private