- Add ESLint v9+ with TypeScript parser and rules
- Add Prettier for code formatting
- Add npm scripts: lint, lint:fix, format, format:check
- Fix all auto-fixable linting errors (123 errors, 7 warnings)
- Improve type safety in editor.ts, storage.ts and test files
- Add curly braces to all control statements
- Fix unbound method warnings in tests
Besides ISO, the lexer now accepts D.M.YYYY / M/D/YYYY literals
(31.12.2024, 12/31/2024) with a round-trip validity check so
out-of-range components (2026-13-45, 32.13.2024) fall back to plain
arithmetic instead of silently rolling over to a nearby valid date —
that rollover bug affected ISO literals too, not just the new forms.
Day/month order for ambiguous literals and display layout both come
from a new dateFormat setting (system/iso/dmy/mdy); "system" resolves
once via Intl against the OS locale. Intl.DateTimeFormat instances
are now cached by options key instead of rebuilt on every render.
App-side wiring (settings UI, persistence) comes in a follow-up commit.
- vocab: EN+RU aliases for abs/log/ln/round; RU already had sqrt/cbrt
- engine: "half"/"a half"/"one half"/"половина" → 0.5; "one and a half"/"полтора"/"полторы" → 1.5 as named constants; widen const union in parser/tokenizer/evaluator/registry
- export: ⤓ button in statusbar dropdown — copy sheet, save .sum, export .txt, print/PDF; write_text_file Tauri command; print media CSS hides chrome
Write plain text, get live results per line. English + Russian, units,
live currency rates with crypto, percents, dates and timezones, bitwise
ops, variables and sheet totals. Tauri 2 + TypeScript engine +
CodeMirror 6; daily backups and a deleted-sheets bin.
Inspired by Numi for macOS (numi.app); built from scratch for Windows.
