Function distinctUntilChanged

distinctUntilChanged<TElement>(
source: Iterable<TElement>,
comparator?: EqualityComparator<TElement, TElement>,
): IEnumerable<TElement>
Removes consecutive duplicate elements by comparing each element with its predecessor.
Type Parameters
- TElement
  Type of elements within the source iterable.
Parameters
- source: Iterable<TElement>
  The source iterable.
- Optionalcomparator: EqualityComparator<TElement, TElement>
  Optional equality comparator used to determine whether adjacent elements are equal. Defaults to the library's standard equality comparison.
Returns IEnumerable<TElement>
A sequence that yields the first element of each run of equal values.
Remarks
Unlike distinct, this only filters adjacent duplicates and preserves earlier occurrences of repeated values.
Example
```
const numbers = [1, 1, 2, 2, 2, 1, 3, 3];
const distinctUntilChangedNumbers = distinctUntilChanged(numbers).toArray();
console.log(distinctUntilChangedNumbers); // [1, 2, 1, 3]
```
- Defined in src/enumerator/functions/distinctUntilChanged.ts:19