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var_declaration and const_declaration nodes contain spec children
(var_spec, const_spec) with name fields. The Go name extractor now
handles these the same way as type_declaration, so nested diffs show
'var_declaration storeLine' instead of '_var_declaration_25'.
Modified declarations now show what changed inside them:
- Inline line-level diffs using LCS for precise change detection
- Whitespace-normalized comparison for brace languages (Go, JS, etc.)
so indentation-only changes collapse to '(whitespace/formatting only)'
- Exact comparison for whitespace-significant languages (Python)
- Recursive nesting into classes/modules to pinpoint which method changed
e.g. 'class Dog: modified > method bark: modified > line change'
- Max depth of 5 prevents unbounded recursion
- Added method_definition to JS/TS/TSX declaration kinds for class methods
Extends the compare_file_contents tool with AST-based structural
diffing for code files using tree-sitter. Instead of line-based diffs,
this shows declaration-level changes (functions, classes, types) which
gives models more concise and semantically meaningful context.
Supported languages: Go, Python, JavaScript, TypeScript, Ruby, Rust,
Java, C/C++.
Requires CGO_ENABLED=1 for the tree-sitter C bindings. Windows builds
are removed from goreleaser as CGO cross-compilation is not supported
without additional toolchain setup.
For unsupported languages, falls back to unified line-based diff.
Sam Morrow