0.144.0

Added

• Lua os library support — the os library is now available in the Lua sandbox, providing access to date, time, and environment functions. Parity with Neovim: all functions available on desktop, nil on mobile. os.execute and os.exit are permanently blocked for security.
  • Plugin: src/lua/engine.ts (opened os library, added defense-in-depth blocks)

Changed

• Fengari CJS-to-TypeScript-ESM conversion — all 37 fengari source files converted from CommonJS JavaScript to TypeScript ESM with full typing (strict: true). Broken circular dependencies between defs.ts/luaconf.ts and linit.ts/lualib.ts. Implemented a hybrid TValue type system with type predicates and narrowed accessors.
  • Plugin: src/lib/fengari/*.ts (37 files converted from .js CJS to .ts ESM)
  • Plugin: src/lib/fengari/index.ts (barrel rewritten — no as any casts)
  • Plugin: src/lib/fengari/platform.ts (was .js)
  • Plugin: src/lib/fengari/package.json (removed — CJS marker no longer needed)
  • Plugin: src/lib/fengari/DIFFERENCES.md (updated for TS conversion)
  • Plugin: src/lua/engine.ts (null check for luaL_newstate())
  • Plugin: vitest.config.ts (removed .test.js pattern)
  • Plugin: eslint.config.mts (removed all fengari-specific rule overrides — all suppressions now inline with descriptions)
  • Plugin: src/lib/fengari/lbaselib.ts (console.log → console.warn for Lua print() fallback — dead code in plugin context, avoids community scanner no-console warning)
  • Plugin: src/lua/engine.ts (narrowed lua_atnativeerror handler string coercion)
• Host-agnostic Lua runtime — replaced platform guards with a dependency injection pattern. Fengari no longer sniffs for Node.js or browser environments, instead using a provider injected by the plugin.
  • Plugin: src/lib/fengari/platform.ts (platform provider implementation)
  • Plugin: src/lua/engine.ts (injected Obsidian platform provider)

Tests

• 23 unit tests in test/unit/fengari/ (6 fork-specific converted to typed TS, 17 upstream absorbed from fengari repo)
• 13 unit tests in test/unit/lua/os-lib.test.ts for the os library

Documentation

• CHANGELOG.md
• AGENTS.md: updated fengari section — TypeScript ESM conversion, TValue type system, test organization
• CONTRIBUTING.md: updated fengari directory description
• KNOWN_LIMITATIONS.md: updated absorbed fengari references and links
• docs/configuration/lua-config.md: updated absorbed fengari references

Full Changelog: 0.143.0...0.144.0