split breaks up 🏴󠁧󠁢󠁷󠁬󠁳󠁿

[Johennes]

This passes:

it('should not split 🇩🇪', function() {
  var wrapped = _('a🇩🇪b');
  assert.strictEqual(wrapped.split('').join(','), 'a,🇩🇪,b');
});

This doesn't:

it('should not split 🏴󠁧󠁢󠁷󠁬󠁳󠁿', function() {
  var wrapped = _('a🏴󠁧󠁢󠁷󠁬󠁳󠁿b');
  assert.strictEqual(wrapped.split('').join(','), 'a,🏴󠁧󠁢󠁷󠁬󠁳󠁿,b');
});

  1 failing

  1) split
       should not split 🏴󠁧󠁢󠁷󠁬󠁳󠁿:

      AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:
+ actual - expected

+ 'a,🏴,󠁧,󠁢,󠁷,󠁬,󠁳,󠁿,b'
- 'a,🏴󠁧󠁢󠁷󠁬󠁳󠁿,b'
       ^
      + expected - actual

      -a,🏴,󠁧,󠁢,󠁷,󠁬,󠁳,󠁿,b
      +a,🏴󠁧󠁢󠁷󠁬󠁳󠁿,b

Downstream issue: element-hq/element-web#22196

[t3chguy]

@justjanne that just isn't true for empty delimiter and unicode input.

https://github.com/lodash/lodash/blob/master/split.js#L35-L37 calls https://github.com/lodash/lodash/blob/master/.internal/unicodeToArray.js?rgh-link-date=2023-05-24T09%3A46%3A14Z#L39 to do the actual splitting

[t3chguy]

@jdalton can you link to what fixed this issue? What version is it fixed it? Are there regression tests?

[jdalton]

@t3chguy Issue bankruptcy. Working on v5 with fresh eyes after a few years.