How to use

answer

function

in

Array

test('support arrays as targets', t => {
  const target = {a: ['many']};
  const source = {a: []};
  source.a[2] = 'unicorns';
  fn(target, source, {a: {answer: 42}});
  t.is(target.a[0], 'many');
  t.is(target.a[1], undefined);
  t.is(target.a[2], 'unicorns');
  t.is(target.a.constructor, Array);
  t.is(target.a.answer, 42);
});