Dingo is a source-to-source transpiler for a custom language that extends Go with Rust-inspired features like sum types (enums), pattern matching, error propagation (`?`), safe navigation (`?.`), null coalescing (`??`), lambdas, tuples, and functional utilities (Option/Result). The transpiled output is clean, idiomatic Go with zero runtime overhead. The repository includes a full CLI tool (`dingo`) with build, run, fmt, lint, and update commands, as well as a language server (`dingo-lsp`) that wraps gopls as a proxy and uses source maps (`.dmap` binary format) for position translation. Editor integrations cover VS Code, Neovim, and JetBrains. The codebase is organized as a monolith with a modular plugin architecture for AST transformations. While actively developed and containing several well-crafted reusable components (source map binary format, error formatting with carets and suggestions, concurrent type cache, animated terminal mascot), the project shows signs of architectural fragmentation: duplicate parser implementations, a legacy preprocessor coexisting with a newer AST pipeline, multiple skipped tests, and known incomplete features tracked in TODOs. The scope is ambitious — many language features are implemented but the overall coherence suffers from incremental AI-assisted development patterns visible in the extensive ai-docs archive.