Core API Change
libnativeapi/nativeapi
Carry a change to the C++ public API in core/ all the way downstream — design check, header edit, six platform implementations, C ABI + Rust/Dart/C/JS/Python regeneration, per-binding verification…
Instructions and guidelines for updating the pinned Preact JS git submodule and synchronizing upstream updates to the Dart preactsignals package.
Install Update Preact
$ npx skills add rodydavis/signals.dart --skill update-preact -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install rodydavis/signals.dart update-preact --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/rodydavis/signals.dart.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/update-preact .claude/skills/update-preact && 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 "update-preact" agent skill from https://github.com/rodydavis/signals.dart/tree/main/.agents/skills/update-preact into .claude/skills/update-preact/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-preact", 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/rodydavis/signals.dart/tree/main/.agents/skills/update-preactType 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 rodydavis/signals.dart --skill update-preact -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install rodydavis/signals.dart update-preact --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rodydavis/signals.dart.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/update-preact .agents/skills/update-preact && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "update-preact" agent skill from https://github.com/rodydavis/signals.dart/tree/main/.agents/skills/update-preact into .agents/skills/update-preact/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-preact", 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 rodydavis/signals.dart --skill update-preact -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install rodydavis/signals.dart update-preact --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rodydavis/signals.dart.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/update-preact .cursor/skills/update-preact && 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 "update-preact" agent skill from https://github.com/rodydavis/signals.dart/tree/main/.agents/skills/update-preact into .cursor/skills/update-preact/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-preact", 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/rodydavis/signals.dart.git --path .agents/skills/update-preact--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 rodydavis/signals.dart --skill update-preact -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install rodydavis/signals.dart update-preact --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rodydavis/signals.dart.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/update-preact .gemini/skills/update-preact && 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 "update-preact" agent skill from https://github.com/rodydavis/signals.dart/tree/main/.agents/skills/update-preact into .gemini/skills/update-preact/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-preact", 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 rodydavis/signals.dart update-preactInstalls 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 rodydavis/signals.dart --skill update-preact -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/rodydavis/signals.dart.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/update-preact .github/skills/update-preact && 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 "update-preact" agent skill from https://github.com/rodydavis/signals.dart/tree/main/.agents/skills/update-preact into .github/skills/update-preact/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-preact", 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 rodydavis/signals.dart --skill update-preact -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install rodydavis/signals.dart update-preact --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rodydavis/signals.dart.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/update-preact .opencode/skills/update-preact && 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 "update-preact" agent skill from https://github.com/rodydavis/signals.dart/tree/main/.agents/skills/update-preact into .opencode/skills/update-preact/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-preact", 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
update-preact- GitHub stars
- 819
- Token cost
- ~1.1k tokens
- SKILL.md length
- 357 words
- Files
- 1
- Skills in repo
- 15
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Instructions and guidelines for updating the pinned Preact JS git submodule and synchronizing upstream updates to the Dart preactsignals package.
- Works in 5 steps: Upstream Submodule Management → Reviewing Upstream Core Architecture… → Porting Changes to Dart preact_signals → …
- Tasks that involve Cross-platform mobile apps
- SKILL.md covers 1. Upstream Submodule Management, 2. Reviewing Upstream Core…, 3. Porting Changes to Dart… and 4. Package Release & Changelog…, plus 1 more section
- Calls git and dart
What it does
Update Preact is an agent skill from rodydavis/signals.dart. Instructions and guidelines for updating the pinned Preact JS git submodule and synchronizing upstream updates to the Dart preactsignals package.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development, covering Cross-platform mobile apps. It works with Preact, Dart and Git. The repository describes itself as: Reactive programming made simple for Dart and Flutter. The licence is Apache-2.0.
When your agent uses it
- Tasks that involve Cross-platform mobile apps
Example prompts
- “Use the update-preact skill to instruction and guidelines for updating the pinned Preact JS git submodule and synchronizing upstream updates to the…”
- “/update-preact”
Workflow steps
5 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 81d64e8. 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
Shell commands in SKILL.md call:
gitdart
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
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
Update Preact loads about 1.1k tokens when it runs. Until then it costs about 40 tokens; SKILL.md has 357 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
The full file from rodydavis/signals.dart at commit 81d64e8, republished under its Apache-2.0 licence (© rodydavis). 357 words, ~1,076 tokens.
Download SKILL.mdSave it as
.claude/skills/update-preact/SKILL.md (or your agent's skills folder).- name
- update-preact
- description
- Instructions and guidelines for updating the pinned Preact JS git submodule and synchronizing upstream updates to the Dart preact_signals package.
Updating Preact JS Submodule and preact_signals Package
This guide details the systematic process for updating the pinned Preact.js Signals JS/TS git submodule (third_party/preactjs_signals) and porting its structural updates, algorithmic changes, and optimizations into the Dart preact_signals package.
1. Upstream Submodule Management
The upstream JavaScript/TypeScript implementation is tracked via a Git submodule located at third_party/preactjs_signals.
A. Initializing and Synchronizing the Submodule
If the submodule is not initialized, run:
git submodule update --init --recursiveB. Pinned Submodule Version Upgrade
To upgrade the pinned submodule version:
- Navigate to the submodule directory:
bash cd third_party/preactjs_signals - Fetch all latest upstream branches and tags:
bash git fetch --tags origin - Checkout the desired release tag or commit hash:
bash git checkout tags/v1.3.0 # or specific tag/commit hash - Return to the root workspace directory and stage the updated submodule pointer:
bash cd ... git add third_party/preactjs_signals
2. Reviewing Upstream Core Architecture Changes
Once the submodule is checked out to the new version, review the differences inside Preact's TypeScript core codebase:
- Core Primitive File: third_party/preactjs_signals/packages/core/src/index.ts
- Test Suite File: third_party/preactjs_signals/packages/core/test/index.test.ts
Compare changes to locate:
- Algorithmic Optimizations: Refinements in graph tracking, batch processing, or lazy evaluation cycles.
- Bug Fixes: Handling of edge-case memory leaks, exception propagates, or subscription-tracking re-entrancy issues.
- API Contracts: New methods or configuration parameters added to
Signal,Computed, orEffect.
3. Porting Changes to Dart preact_signals
All ported logic must reside in the packages/preact_signals package.
Show full SKILL.md (151 more words)Show less
A. Code Synchronization
Modify the corresponding Dart implementation files to accurately align with the updated Preact JS algorithms:
- Core Signal Primitive: packages/preact_signals/lib/src/signal.dart
- Computed Engine: packages/preact_signals/lib/src/computed.dart
- Effect Engine: packages/preact_signals/lib/src/effect.dart
- Batch Execution: packages/preact_signals/lib/src/batch.dart
[!IMPORTANT] Keep the Dart implementation highly semantic and idiomatic. While replicating Preact's structural logic is necessary to preserve reactive correctness and avoid cycles, leverage Dart's language features (such as
lateinitializers,WeakReference,Expando, orExtension types) appropriately.
B. Porting Upstream Tests
Ensure any new test cases introduced in Preact core's test suite are ported to:
4. Package Release & Changelog Alignment
When changes are ported, increment package versions and document changes.
- Semantic Versioning: Increase the version in packages/preact_signals/pubspec.yaml based on whether changes are major (breaking changes), minor (features), or patch (bug fixes).
- Changelog Documentation: Document all changes and the specific upstream version tag synced in packages/preact_signals/CHANGELOG.md.
5. Verification Checklist
Execute these verification commands prior to staging code changes:
# 1. Update monorepo dependencies
melos bootstrap
# 2. Run static analysis
melos run analyze
# 3. Format files
dart format .
# 4. Execute all unit tests and verify 100% success
melos run test
# 5. Review combined coverage and verify high metrics
melos run coverage© rodydavis, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .agents/skills/update-preact of rodydavis/signals.dart.
Open the folder on GitHubat commit 81d64e8
Compare with similar skills
Update Preact 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 |
|---|---|---|---|---|---|---|
| Update Preact this skillrodydavis/signals.dart | 819 | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| Core API Changelibnativeapi/nativeapi | 161 | — | ~2.5k | Automated safety check: Pass | MIT | |
| Flutter Appccplugins/awesome-claude-code-plugins | 968 | — | ~1.1k | Automated safety check: Notes | Apache-2.0 | |
| Code Guidelinesgetsentry/sentry-dart | 873 | — | ~2.2k | Automated safety check: Pass | MIT | |
| Bump VersionVeryGoodOpenSource/very_good_analysis | 478 | — | ~2.6k | Automated safety check: Pass | MIT | |
| Dart 3 Updatesevanca/flutter-ai-rules | 649 | — | ~2k | Automated safety check: Pass | MIT |
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Questions about Update Preact
What does Update Preact do?
Instructions and guidelines for updating the pinned Preact JS git submodule and synchronizing upstream updates to the Dart preactsignals package. dart. Instructions and guidelines for updating the pinned Preact JS git submodule and synchronizing upstream updates to the Dart preactsignals package.
When should I use Update Preact?
Update Preact fits situations like: tasks that involve Cross-platform mobile apps.
How do I install Update Preact in Claude Code?
Run `npx skills add rodydavis/signals.dart --skill update-preact -a claude-code`. Or copy the skill folder (.agents/skills/update-preact in rodydavis/signals.dart) into .claude/skills/update-preact in your project. Claude Code loads it when a task matches its description.
How do I install Update Preact in Codex?
Run `npx skills add rodydavis/signals.dart --skill update-preact -a codex`. Or copy the skill folder (.agents/skills/update-preact in rodydavis/signals.dart) into .agents/skills/update-preact in your project. Codex loads it when a task matches its description.
Can I use Update Preact 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 rodydavis/signals.dart --skill update-preact -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/update-preact, .gemini/skills/update-preact, .github/skills/update-preact and .opencode/skills/update-preact in your project.
What does Update Preact need to run?
Going by SKILL.md and its folder, Update Preact needs the command-line tools its instructions call (git and dart).
Does Update Preact access the network?
SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Update Preact 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 Update Preact use?
Update Preact is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Update Preact use?
About 1.1k tokens (SKILL.md is roughly 4.3k 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 Update Preact?
Skills that share tags, products or a category with Update Preact: Core API Change (libnativeapi/nativeapi, 161 stars), Flutter App (ccplugins/awesome-claude-code-plugins, 968 stars), Code Guidelines (getsentry/sentry-dart, 873 stars) and Bump Version (VeryGoodOpenSource/very_good_analysis, 478 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Update Preact?
rodydavis (a GitHub user) maintains it in rodydavis/signals.dart, which has 819 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on September 14, 2026.
Source: rodydavis/signals.dart on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.