Rewrite Go library to faithfully port TypeScript architecture#40
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Rewrite Go library to faithfully port TypeScript architecture#40
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Replace the previous recursive descent parser with the same matcher-based lexer and rule-based parser architecture as the TypeScript implementation: - Matcher-based lexer: fixed, space, line, string, comment, number, text matchers tried in order, with IGNORE token skipping - Rule engine: Rule/RuleSpec/AltSpec with open/close states, push/replace/pop stack operations, 2-token lookahead, counter methods (Eq/Lt/Gt/Lte/Gte) - Grammar: val/map/list/pair/elem rules with exact alternate orderings matching the TypeScript JSON phase + Jsonic extension phase (including unshift vs push semantics, modlist delete/move operations) - Undefined sentinel to distinguish "no value" from nil (null), matching TypeScript's undefined vs null semantics - Slice propagation: elem.BC propagates updated slices to parent list rule to handle Go's append semantics (vs JS reference-type arrays) - Result chain following: parser follows replacement chain to find the actual result rule for implicit list cases All 30 TSV spec tests pass (26 parser + 4 utility). https://claude.ai/code/session_01FUyByRfJWUvyPkFoLZ5z6H
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