Function parsePartial

parsePartial(input: string): Result<[Pattern, number]>
Parses a partial dCBOR pattern expression, returning the parsed pattern and the number of characters consumed.

Unlike parse(), this function succeeds even if additional characters follow the first pattern. The returned index points to the first unparsed character after the pattern.
Parameters
- input: string
  The pattern string to parse
Returns Result<[Pattern, number]>
A Result containing a tuple of [Pattern, consumedLength] or an error
Example
```
const result = parsePartial("true rest");
if (result.ok) {
  const [pattern, consumed] = result.value;
  console.log(consumed); // 4 or 5 (includes whitespace)
}
```
- Defined in parse/index.ts:79