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Symbol Index is an intelligent code navigation system that indexes TypeScript/JavaScript/Python symbols for instant lookup.

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Features

  • Persistent index - Per-project index stored at ~/.config/lukan/indexes/
  • Automatic initialization - Lazy, non-blocking startup
  • Incremental updates - Git status + mtime detection
  • Auto-refresh - Updates after file modifications
  • TypeScript AST parsing - Accurate symbol extraction

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FindSymbol Tool

FindSymbol({ name: "sendEmail", kind: "function", exported_only: true })
-> src/tools/email.ts:245-280

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Parameters

ParameterTypeDescription
namestringSymbol name to search
kindstringFilter by type: function, class, method, interface, type, const, any
exported_onlybooleanOnly show exported symbols (default: false)

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Usage in Tools

For files >300 lines, the ReadFile tool suggests using FindSymbol instead to locate specific code faster: 
ReadFile({ file_path: "src/tools/email.ts", offset: 244, limit: 36 })
The tool returns the exact location (file:line-endLine) so you can read just the relevant section.