@pierre/diffs Code Rendering
pierrecomputer/pierre
Guides an agent through using @pierre/diffs to render syntax-highlighted files and diffs, and to build editing and review surfaces in React or plain JavaScript.
Explains how to build or change a Handsontable cell type that bundles an editor, renderer and validator under one registered name, including registration steps and value rules.
Install Handsontable Cell Type Development
$ npx skills add handsontable/handsontable --skill handsontable-celltype-dev -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install handsontable/handsontable handsontable-celltype-dev --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/handsontable/handsontable.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/handsontable-celltype-dev .claude/skills/handsontable-celltype-dev && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "handsontable-celltype-dev" agent skill from https://github.com/handsontable/handsontable/tree/develop/.claude/skills/handsontable-celltype-dev into .claude/skills/handsontable-celltype-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handsontable-celltype-dev", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/handsontable/handsontable/tree/develop/.claude/skills/handsontable-celltype-devType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add handsontable/handsontable --skill handsontable-celltype-dev -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install handsontable/handsontable handsontable-celltype-dev --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/handsontable/handsontable.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/handsontable-celltype-dev .agents/skills/handsontable-celltype-dev && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "handsontable-celltype-dev" agent skill from https://github.com/handsontable/handsontable/tree/develop/.claude/skills/handsontable-celltype-dev into .agents/skills/handsontable-celltype-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handsontable-celltype-dev", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add handsontable/handsontable --skill handsontable-celltype-dev -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install handsontable/handsontable handsontable-celltype-dev --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/handsontable/handsontable.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/handsontable-celltype-dev .cursor/skills/handsontable-celltype-dev && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "handsontable-celltype-dev" agent skill from https://github.com/handsontable/handsontable/tree/develop/.claude/skills/handsontable-celltype-dev into .cursor/skills/handsontable-celltype-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handsontable-celltype-dev", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/handsontable/handsontable.git --path .claude/skills/handsontable-celltype-dev--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add handsontable/handsontable --skill handsontable-celltype-dev -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install handsontable/handsontable handsontable-celltype-dev --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/handsontable/handsontable.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/handsontable-celltype-dev .gemini/skills/handsontable-celltype-dev && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "handsontable-celltype-dev" agent skill from https://github.com/handsontable/handsontable/tree/develop/.claude/skills/handsontable-celltype-dev into .gemini/skills/handsontable-celltype-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handsontable-celltype-dev", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install handsontable/handsontable handsontable-celltype-devInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add handsontable/handsontable --skill handsontable-celltype-dev -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/handsontable/handsontable.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/handsontable-celltype-dev .github/skills/handsontable-celltype-dev && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "handsontable-celltype-dev" agent skill from https://github.com/handsontable/handsontable/tree/develop/.claude/skills/handsontable-celltype-dev into .github/skills/handsontable-celltype-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handsontable-celltype-dev", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add handsontable/handsontable --skill handsontable-celltype-dev -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install handsontable/handsontable handsontable-celltype-dev --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/handsontable/handsontable.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/handsontable-celltype-dev .opencode/skills/handsontable-celltype-dev && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "handsontable-celltype-dev" agent skill from https://github.com/handsontable/handsontable/tree/develop/.claude/skills/handsontable-celltype-dev into .opencode/skills/handsontable-celltype-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handsontable-celltype-dev", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
handsontable-celltype-dev- GitHub stars
- 22k
- Token cost
- ~1.2k tokens
- SKILL.md length
- 561 words
- Files
- 1
- Skills in repo
- 31
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Explains how to build or change a Handsontable cell type that bundles an editor, renderer and validator under one registered name, including registration steps and value rules.
- Works in 3 steps: registerCellType(MyCellType) (import… → Export from src/cellTypes/index.ts so… → Add the type string to the type option's…
- Adding a new cell type to the Handsontable source
- SKILL.md covers Structure, Registration, Key rules and Reference implementations
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
A Handsontable cell type is an object that composes an editor, a renderer and a validator under a single name. It lives in its own folder under src/cellTypes with an index.ts that re-exports it. To register it, you call registerCellType from the registry module, export it from src/cellTypes/index.ts so the full bundle includes it, and add its name to the accepted values of the type option in metaSchema.ts.
The skill lists the rules for doing this safely, and it is written for contributors working inside the Handsontable source tree. Every component is optional, so a type can drop the validator, or the editor for a read-only type, and an explicit renderer, editor or validator set next to the type overrides the one the type supplies. Incoming values may be normalized only in valueSetter, because paste, setDataAtCell(), populateFromArray(), autofill and undo skip the editor. Anything exported from src/helpers becomes public API for good, so cell-type helpers belong in src/utils.
When your agent uses it
- Adding a new cell type to the Handsontable source
- Changing how an existing cell type validates or renders values
- Registering a cell type and exposing it in the type option
- Fixing pasted or autofilled values that bypass the editor
Example prompts
- “Create a cell type for currency values with its own editor, renderer and validator.”
- “Make the autocomplete cell type store the matching key when someone pastes a label.”
- “Register the new rating cell type so it shows up as a value of the type option.”
Requirements
- A checkout of the Handsontable source repository
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- registerCellType(MyCellType) (import from ../../cellTypes/registry).
- Export from src/cellTypes/index.ts so the full bundle has it.
- Add the type string to the type option's accepted values in src/dataMap/metaManager/metaSchema.ts.
What it can do on your machine
Read from SKILL.md and the folder at commit 68b5e97. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Handsontable Cell Type Development loads about 1.2k tokens when it runs. Until then it costs about 47 tokens; SKILL.md has 561 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 561 words (~1,248 tokens).
“A cell type is a composition object bundling editor, renderer, and validator under one name:”
- name
- handsontable-celltype-dev
- path
- handsontable/src/cellTypes/**
Files
Just SKILL.md in .claude/skills/handsontable-celltype-dev of handsontable/handsontable.
Open the folder on GitHubat commit 68b5e97
Compare with similar skills
Handsontable Cell Type Development next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Handsontable Cell Type Development this skillhandsontable/handsontable | 22k | — | ~1.2k | Automated safety check: Pass | Custom licence | |
| @pierre/diffs Code Renderingpierrecomputer/pierre | 6.2k | 2 repos | ~803 | Automated safety check: Pass | Apache-2.0 | |
| Tabler Core JavaScripttabler/tabler | 42k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Jaspr JS Interoprodydavis/signals.dart | 819 | — | ~823 | Automated safety check: Pass | Apache-2.0 | |
| Monstermq Dashboard Developervogler75/monster-mq | 142 | — | ~1.8k | Automated safety check: Pass | GPL-3.0 | |
| ComfyUI Frontend Extensionsjtydhr88/comfyui-custom-node-skills | 294 | — | ~3.7k | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about Handsontable Cell Type Development
What does Handsontable Cell Type Development do?
Explains how to build or change a Handsontable cell type that bundles an editor, renderer and validator under one registered name, including registration steps and value rules. A Handsontable cell type is an object that composes an editor, a renderer and a validator under a single name.ts that re-exports it.
When should I use Handsontable Cell Type Development?
Handsontable Cell Type Development fits situations like: adding a new cell type to the Handsontable source; changing how an existing cell type validates or renders values; registering a cell type and exposing it in the type option; fixing pasted or autofilled values that bypass the editor.
How do I install Handsontable Cell Type Development in Claude Code?
Run `npx skills add handsontable/handsontable --skill handsontable-celltype-dev -a claude-code`. Or copy the skill folder (.claude/skills/handsontable-celltype-dev in handsontable/handsontable) into .claude/skills/handsontable-celltype-dev in your project. Claude Code loads it when a task matches its description.
How do I install Handsontable Cell Type Development in Codex?
Run `npx skills add handsontable/handsontable --skill handsontable-celltype-dev -a codex`. Or copy the skill folder (.claude/skills/handsontable-celltype-dev in handsontable/handsontable) into .agents/skills/handsontable-celltype-dev in your project. Codex loads it when a task matches its description.
Can I use Handsontable Cell Type Development in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add handsontable/handsontable --skill handsontable-celltype-dev -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/handsontable-celltype-dev, .gemini/skills/handsontable-celltype-dev, .github/skills/handsontable-celltype-dev and .opencode/skills/handsontable-celltype-dev in your project.
What does Handsontable Cell Type Development need to run?
SKILL.md names no scripts, command-line tools or credentials: Handsontable Cell Type Development is instructions for the agent only. Our summary lists: A checkout of the Handsontable source repository.
Does Handsontable Cell Type Development access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Handsontable Cell Type Development safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Handsontable Cell Type Development use?
Handsontable Cell Type Development has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Handsontable Cell Type Development use?
About 1.2k tokens (SKILL.md is roughly 5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Handsontable Cell Type Development?
Skills that share tags, products or a category with Handsontable Cell Type Development: @pierre/diffs Code Rendering (pierrecomputer/pierre, 6.2k stars), Tabler Core JavaScript (tabler/tabler, 42k stars), Jaspr JS Interop (rodydavis/signals.dart, 819 stars) and Monstermq Dashboard Developer (vogler75/monster-mq, 142 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Handsontable Cell Type Development?
handsontable (a GitHub organization) maintains it in handsontable/handsontable, which has 22,059 GitHub stars. The repository holds 31 skills in this directory. The repository was last updated on October 7, 2026.
Source: handsontable/handsontable on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.