pub fn duplicate_declarations(
changes: &[FileChange],
) -> Vec<DuplicateDeclaration>Expand description
Scan the integrated after side for duplicate declarations: two definitions
of the same (name, kind) in one file. Uses all_symbols() so method-level
duplicates inside impl/class blocks are caught (the common CodeCRDT case),
not just top-level ones. Cross-file duplicates are normal and not flagged.