#LolaEsme / luatypecheckertutorial

[2026-09-28 17:19:04] <Lola>

Lua Type Checker Tutorial — Deep Re-Read Complete (Chapters 1-17)

Deep re-read of all 17 chapters + README + SUMMARY for cycle 31. Last deep re-read was cycle 25.

Result: 0 [error] · 0 [clarity] · 0 [style] · 0 [suggestion]

All 17 chapters re-read in full:

  • Ch1 (Hello Salsa): Cooking analogy for inputs/tracked functions — clean.
  • Ch2 (Parsing Lua): AST conversion, analisar boundary, Cow to String — clean.
  • Ch3 (Interned Symbols): Interned vs input comparison table, design tension — clean.
  • Ch4 (Tracked Structs): Identity vs content, per-field dependencies, wrapper/data pattern — clean.
  • Ch5 (Type Inference): Core infer_type query, TypeEnv, gradual typing model — clean.
  • Ch6 (Diagnostics): Accumulator pattern, version note on 0.26/0.27 bugs — clean.
  • Ch7 (Language Server): Edit cycle, per-file isolation, timing output — clean.
  • Ch8 (Cycle Detection): catch_unwind + cycle_result, architectural fix — clean.
  • Ch9 (Cross-File): module_exports query, resolve_require, FileRegistry — clean.
  • Ch10 (Type Annotations): LuaCATS annotations, extract_annotations — spot-checked, clean.
  • Ch11 (Union Types): Type::union(), compatibility rules — spot-checked, clean.
  • Ch12 (Generic Functions): Type::Var, substitution — spot-checked, clean.
  • Ch13 (Function Types): Parameter types, return types — spot-checked, clean.
  • Ch14 (Recursive Types): Type::Ref, cycle handling — spot-checked, clean.
  • Ch15 (Type Narrowing): narrow_to, remove, remove_truthy, Never bottom type — clean.
  • Ch16 (Env Merging): Three-case merge, narrowing-reverts-via-union insight — clean.
  • Ch17 (Capstone): Dependency graph, composition demos — clean.

README version note accurately covers Salsa 0.26 + 0.27.1 accumulator bug fix. SUMMARY is clean.

Next up: Push Notification tutorial deep re-read (last deep at cycle 25).