message: Fix 'Mode graphql failed to advance stream'
diff: @@ -109,7 +109,12 @@ function getToken(
  // If there's no matching token, skip ahead.
  if (!token) {
  - stream.match(/\S+/);
  + const matchedSomething = stream.match(/\S+/);
  + if (!matchedSomething) {
  + // We need to eat at least one character, and we couldn't match any
  + // non-whitespace, so it must be exotic whitespace.
  + stream.match(/\s/);
  + }
  pushRule(SpecialParseRules, state, 'Invalid');
  return 'invalidchar';
  }
  