Tspoon

Tspoon is a library that provides AST visitors for TypeScript, enabling pluggable modifications to the abstract syntax tree before transpilation. Current stable version is 1.0.460, with active development. It leverages the TypeScript compiler API to allow custom visitors to transform code, perform early optimizations, and bypass diagnostics. Unlike general-purpose AST tools, Tspoon is specifically designed for TypeScript and integrates with its transpilation pipeline. Release cadence is irregular. Key differentiator: deep integration with TypeScript's compiler, supporting visitor composition and custom diagnostics.