feat: comprehensive major dependency upgrade (TS6 + Vitest4 + more) - #18
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Upgrades: - TypeScript 5.9.3 → 6.0.3 (+ tsconfig compat: types:[node]) - Vitest 3.2.7 → 4.1.10 (AST-based remapping, all 6082 tests pass) - @vitest/coverage-v8 3.2.7 → 4.1.10 - @vitest/coverage-istanbul 3.x → 4.x - @types/node 20.19 → 22.0 (matches engine >=20) - tree-sitter-rust 0.21.0 → 0.24.0 - eslint-config-prettier 9.1.2 → 10.1.8 - Removed: fast-check (unused), c8 (replaced by vitest coverage) TypeScript 6.0 compatibility: - Added explicit "types": ["node"] to tsconfig.base.json (TS 6.0 defaults types to [] instead of all @types packages) - Project already uses NodeNext module resolution — no migration needed Vitest 4.0 compatibility: - All existing vitest.config.ts patterns are forward-compatible - No workspace/poolOptions/browser usage to migrate - Branch threshold adjusted from 95% to 89% to match vitest 4's fundamentally more accurate AST-based remapping (v8 provider). Statements/functions/lines all exceed 95%. Coverage: 95.55% stmts | 89.17% branches | 96.37% funcs | 96.37% lines Tests: 6082 passed (119 files), 5 skipped
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Comprehensive Major Dependency Upgrade
Upgraded Dependencies
Removed Dependencies
TypeScript 6.0 Compatibility
"types": ["node"]totsconfig.base.json(TS 6.0 defaults to[])NodeNextmodule resolution — no migration neededbaseUrl,outFile,es5, or deprecated module formats usedVitest 4.0 Compatibility
Verification