message: Update normalizeWhitespace test to work with new chai version
  Seems like in the old version `have.members` was equivalent to
  `include`. Update the assertion to reflect what we actually expect it to
  do, which is replace each "invalid" whitespace character with a single
  space.
diff: @@ -14,6 +14,6 @@ import { invalidCharacters, normalizeWhitespace } from '../normalizeWhitespace';
  describe('QueryEditor', () => {
  it('removes unicode characters', () => {
  const result = normalizeWhitespace(invalidCharacters.join(''));
  - expect([ ...result ]).to.have.members([ ' ' ]);
  + expect(result).to.equal(' '.repeat(invalidCharacters.length));
  });
  });
  