codeql

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Asger F f3b27a56b1 TypeScript-Go wrapper: binary AST decoder, JSON converter, and tokenizer

Implement the core components for translating tsgo's binary AST format
into the JSON format expected by the Java extractor:

- decoder.go: Binary AST format parser with random-access node accessors
  (kind, pos, end, flags, children, strings, extended data)
- converter.go: Walks decoded AST and produces JSON matching Node.js
  wrapper output (augmented , , , ,
  isTypeOnly, HeritageClause token, TypeOperator operator)
- childprops.go: Maps ~100 SyntaxKind names to ordered child property
  name lists for correct bitmask-to-property assignment
- scanner.go: TypeScript tokenizer producing  array with rescan
  support for regex, template, and greater-than disambiguation

Update metadata.go with correct TS7 SyntaxKind iota values and export
metadata functions. Wire decoder+converter through TsgoParser.Parse().

Validation test passes: all 421 diffs are expected TS5-vs-TS7 numeric
kind/flags/token/operator value differences. Zero structural diffs.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

2026-04-10 14:36:00 +02:00