v0.0.9

Features

• Hooks — Extensible hook system for CLI and SDK consumers. Hook files export a default function receiving a HookAPI instance with on() for preCommand, postCommand, onOpen, preSave, postSave events. Auto-discovered from .headless-spreadjs/hooks/ (local or global). Disable with --no-hooks or HEADLESS_SPREADJS_NO_HOOKS env var.
• CLI: hsx watch — Live file-watching UI for spreadsheet changes.
• CLI: set now supports drag-and-fill for series expansion.
• CLI: set, clear, copy now track mutated ranges for fine-grained hook callbacks.
• CLI: copy with --copy-to uses a helper sheet when source/dest overlap on the same sheet, preventing write-before-read smearing.
• Example hooks: financial-colors, hardcode-lint, no-gridlines.

Fixed

• CLI: Cache invalidation for read-only paths when onOpen hooks ran, preventing hook side-effects from leaking into subsequent requests.
• CLI: --no-hooks flag now propagates into isolated daemon eval child processes.
• CLI: Cross-sheet --copy-to now clears destination data/style when source is blank.

Docs

• Updated skills/spreadjs/SKILL.md with modern Excel / dynamic-array formula guidance for hsx workflows.
• Updated README.md with hook system documentation.

v0.0.8

Fixed

• CLI: set now expands newly created sheets before writing, preventing silent data loss on non-active sheets beyond SpreadJS' default 200 × 20 grid.
• CLI: eval and range(ref) now expand newly created target sheets before access, fixing silent drops and truncated results on off-grid writes.
• CLI: sheet create now initializes new worksheets at full size so later commands behave consistently with existing sheets.
• Added regression tests covering non-active sheet writes and eval access beyond U201 / V202.

v0.0.7

Features

• Enable dynamic-array formula support (allowDynamicArray) by default — unlocks FILTER, SORT, UNIQUE, SEQUENCE, VSTACK, HSTACK, MAP, REDUCE, and other spill-based functions.

v0.0.6

Features

• Daemon mode — hsx now runs a background daemon by default to avoid re-initializing SpreadJS on every command. Auto-starts on first use, caches open workbooks (LRU), auto-exits after idle timeout. Commands: hsx daemon start|stop|status|flush.
• CLI: hsx screenshot — render sheets to PNG via Playwright (optional peer dependency).
• CLI: hsx diff — compare two workbooks cell-by-cell, with --epsilon for floating-point tolerance.
• CLI: hsx deps — show formula dependency graph for a cell reference.
• CLI: hsx csv now supports --mode value|formula|both, plus --formulas shorthand for formula-focused exports.
• CLI: hsx eval gains a range(ref) helper for easy A1-notation cell access in scripts.

Fixed

• CLI: set now properly clears existing formulas when overwriting with plain values.
• CLI: set style bugs and performance improvements.
• CLI: Range expansion for set operations.
• CLI: CSV argument parsing and daemon auto-flush on interval.
• CLI: Screenshots now include column and row headers.

Chores

• Moved Playwright to an optional peer dependency.
• Renamed skill/ to skills/ for CLI discovery conventions.
• Added AGENTS.md with project overview, structure, dev commands, and release workflow.

v0.0.3

Features

• CLI: Added --version / -v flag to print the package version.

Fixed

• CLI: Extracted fatal error handling into a shared reportFatalError helper, removing duplicated uncaughtException / unhandledRejection logic. Errors now propagate from main() via .catch() instead of a redundant inner try/catch.
• CLI: Long error messages are now truncated (with ...) instead of being silently replaced. The generic "unsupported features" fallback message is only used when the error looks like a known SpreadJS canvas/shape/chart/form-control failure.
• Shims: Canvas dimensions are now synced — the backing node-canvas is recreated when the element's width or height changes, preventing stale context bugs.
• Shims: toBlob callback is now dispatched via queueMicrotask to match the browser-spec async timing.
• Shims: Removed blanket as never type casts in canvas shim; all canvas method calls now use precise overload-matching types from the canvas package.

v0.0.2

Features

• CLI (hsx) — New command-line interface for working with Excel files directly from the terminal. Supports get, set, clear, copy, eval, search, info, csv, create, sheet, resize, rows-cols, and objects commands with A1-style range addressing and formatted table output.

Chores

• Added AI skill definition (skill/spreadjs/) with TypeScript declarations for LLM-assisted spreadsheet workflows.
• Moved tests from src/test/ to top-level test/ directory with dedicated tsconfig.json.
• Added typecheck step for tests in CI.
• Cleaned up types and formatting.

v0.0.1

Full Changelog: https://github.com/hewliyang/headless-spreadjs/commits/v0.0.1