message: Add missing headers to normalizeWhitespace implementation
diff: +/**
  + * Copyright (c) Facebook, Inc.
  + * All rights reserved.
  + *
  + * This source code is licensed under the license found in the
  + * LICENSE file in the root directory of this source tree.
  + */
  // unicode whitespace characters that break the interface
  export const invalidCharacters = Array.from({ length: 11 }, (x, i) => {
  @@ -16,4 +23,3 @@ const sanitizeRegex = new RegExp(
  export function normalizeWhitespace(line) {
  return line.replace(sanitizeRegex, ' ');
  }
  -
  