message: fix branch coverage
diff: @@ -73,7 +73,7 @@ describe('fieldFunction', () => {
  const fn = fieldFunction(undefined, form)
  it('returns an error block', () => {
  - const result = fn(document, document.createElement('div'), {},
  + const result = fn(document, undefined, {},
  namedNode('http://example.com/#subject'),
  namedNode('http://example.com/#form'),
  namedNode('http://example.com/'),
  