Function parseFilter

Re-export of the structured Filter union for callers building filters directly.

parseFilter(input: string): Filter
Parses an RFC 4515 filter string into a structured Filter.

Supports the composite operators &, |, !, the comparison operators =, >=, <=, ~=, the presence test attr=*, and substring patterns such as cn=a*b*c. The outermost parentheses are required, matching the RFC grammar.
Parameters
- input: string
  The filter string (e.g. (&(objectClass=person)(uid=jdoe))).
Returns Filter
The structured filter.
Throws
If the string is malformed (unbalanced parens, empty filter, etc.).

Since
1.0.0
Example
```
parseFilter('(mail=*)'); // { type: 'present', attribute: 'mail' }
parseFilter('(cn=a*b*c)'); // substrings: initial a, any [b], final c
```
- Defined in src/ldap/filter.ts:185