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Agent skill

Es X Snapshot Config Update

by eslint-community in eslint-community/eslint-plugin-es-x

Update eslint-plugin-es-x for a newly finalized yearly ECMAScript/ECMA-402 snapshot in its own dedicated PR.

MITAuto-check passedDevelopment

Install Es X Snapshot Config Update

skills CLI
$ npx skills add eslint-community/eslint-plugin-es-x --skill es-x-snapshot-config-update -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install eslint-community/eslint-plugin-es-x es-x-snapshot-config-update --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/eslint-community/eslint-plugin-es-x.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/es-x-snapshot-config-update .claude/skills/es-x-snapshot-config-update && rm -rf skills-src

Use ~/.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/

Facts

Skill name
es-x-snapshot-config-update
GitHub stars
157
Token cost
~550 tokens
SKILL.md length
229 words
Files
1
Skills in repo
6
Repo updated
First seen
Licence
MIT

At a glance

Update eslint-plugin-es-x for a newly finalized yearly ECMAScript/ECMA-402 snapshot in its own dedicated PR.

  • Works in 7 steps: Confirm the repo is clean enough to work… → Inspect scripts/rules.ts and find… → Change LATEST_ES_YEAR to the new stable… → …
  • Preparing a major release that moves the latest snapshot year forward
  • SKILL.md covers Workflow and Project Notes
  • Calls git and npm

What it does

Es X Snapshot Config Update is an agent skill from eslint-community/eslint-plugin-es-x. Update eslint-plugin-es-x for a newly finalized yearly ECMAScript/ECMA-402 snapshot in its own dedicated PR. Use when preparing a major release that moves the latest snapshot year forward, updates scripts/rules.ts LATESTESYEAR, regenerates no-new-in-esYYYY and restrict-to-esYYYY configs, refreshes generated docs/index files, adds task-specific release notes, and verifies this PR-sized task.

Its SKILL.md is about 550 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 Linting and formatting and Changelog and release notes. It works with JavaScript and ESLint. The repository describes itself as: ESLint plugin about ECMAScript syntactic features. The licence is MIT.

When your agent uses it

  • Preparing a major release that moves the latest snapshot year forward
  • Updates scripts/rules.ts LATESTESYEAR
  • Regenerates no-new-in-esYYYY and restrict-to-esYYYY configs
  • Refreshes generated docs/index files

Example prompts

  • “/es-x-snapshot-config-update”

Requirements

  • Node.js

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  1. Confirm the repo is clean enough to work with git status --short.
  2. Inspect scripts/rules.ts and find LATEST_ES_YEAR.
  3. Change LATEST_ES_YEAR to the new stable snapshot year. This is the one manual source edit.
  4. Run npm run update.
  5. Review generated changes
  6. Add release notes for this snapshot-config PR through .agents/es-x-changeset/SKILL.md.
  7. Verify this snapshot-config PR through .agents/es-x-release-verification/SKILL.md.

What it can do on your machine

Read from SKILL.md and the folder at commit b80ba91. 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:

    • git
    • npm

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use git and npm, 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

Es X Snapshot Config Update loads about 550 tokens when it runs. Until then it costs about 106 tokens; SKILL.md has 229 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~106
When it runs · the whole SKILL.md, loaded when a task matches
~550

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 eslint-community/eslint-plugin-es-x at commit b80ba91, republished under its MIT licence (© eslint-community). 229 words, ~550 tokens.

Download SKILL.mdSave it as .claude/skills/es-x-snapshot-config-update/SKILL.md (or your agent's skills folder).
name
es-x-snapshot-config-update
description
Update eslint-plugin-es-x for a newly finalized yearly ECMAScript/ECMA-402 snapshot in its own dedicated PR. Use when preparing a major release that moves the latest snapshot year forward, updates scripts/rules.ts LATEST_ES_YEAR, regenerates no-new-in-esYYYY and restrict-to-esYYYY configs, refreshes generated docs/index files, adds task-specific release notes, and verifies this PR-sized task.

ES-X Snapshot Config Update

Workflow

Use this in the eslint-plugin-es-x repository when a yearly ECMAScript snapshot has become the latest stable snapshot. Keep this work separate from Node.js support drops and ESLint support drops unless the user explicitly asks for a combined PR.

  1. Confirm the repo is clean enough to work with git status --short.
  2. Inspect scripts/rules.ts and find LATEST_ES_YEAR.
  3. Change LATEST_ES_YEAR to the new stable snapshot year. This is the one manual source edit.
  4. Run npm run update.
  5. Review generated changes:
    • New lib/configs/no-new-in-esYYYY.js and lib/configs/flat/no-new-in-esYYYY.js.
    • New restrict-to-es{YYYY-1} legacy and flat configs.
    • no-new-in-esnext* should now contain only post-YYYY rules; it may become empty for Intl API.
    • lib/index.ts should expose the new config keys and types.
    • docs/configs/index.md, docs/rules/index.md, and affected rule docs should link to the stable config names.
  6. Add release notes for this snapshot-config PR through .agents/es-x-changeset/SKILL.md.
  7. Verify this snapshot-config PR through .agents/es-x-release-verification/SKILL.md.

Project Notes

Do not hand-edit generated config or docs files unless the generator is wrong. The source of truth is scripts/rules.ts plus rule metadata in lib/rules/*.

The README policy says major releases update configs when new ECMAScript snapshots are available. Proposal-specific configs stop showing the experimental warning once their category is no longer experimental.

When checking the diff, look for ESYYYY rules moving from no-new-in-esnext to no-new-in-esYYYY, and for older restrict-to-* configs extending or merging the new stable year.

© eslint-community, MIT. 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/es-x-snapshot-config-update of eslint-community/eslint-plugin-es-x.

Open the folder on GitHubat commit b80ba91

Compare with similar skills

Es X Snapshot Config Update 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.

Es X Snapshot Config Update compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Es X Snapshot Config Update this skilleslint-community/eslint-plugin-es-x157—~550Automated safety check: PassMIT
Ultraciteagustinusnathaniel/nextarter-tailwind1252 repos~1.2kAutomated safety check: PassMIT
Code Qualityredis/RedisInsight8.9k—~1.2kAutomated safety check: PassCustom licence
Port Ruleweb-infra-dev/rslint461—~1.7kAutomated safety check: PassMIT
Migrate OxlintAsvarox/allkaraoke2614 repos~2.5kAutomated safety check: PassNone
Cb Code QualityBlkLeg/CircuitBreaker201—~1.9kAutomated safety check: PassMIT

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More from eslint-community/eslint-plugin-es-x

  • Es X Changeset

    eslint-community/eslint-plugin-es-x

    Add or update Changesets entries for eslint-plugin-es-x. An agent skill from eslint-community/eslint-plugin-es-x.

    157 GitHub stars~383 tokensUpdated 15 days ago
    Auto-check passed

  • Es X Major Version Prep

    eslint-community/eslint-plugin-es-x

    Prepare eslint-plugin-es-x for a major version release from a broad instruction such as "prepare the major version upgrade" or "prepare the next major release".

    157 GitHub stars~801 tokensUpdated 15 days ago
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  • Es X Eslint Support Update

    eslint-community/eslint-plugin-es-x

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    157 GitHub stars~798 tokensUpdated 15 days ago
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  • Es X Node Support Update

    eslint-community/eslint-plugin-es-x

    Update eslint-plugin-es-x Node.js support in its own dedicated PR.

    157 GitHub stars~980 tokensUpdated 15 days ago
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  • Es X Release Verification

    eslint-community/eslint-plugin-es-x

    Verify eslint-plugin-es-x changes before handoff or release preparation.

    157 GitHub stars~388 tokensUpdated 15 days ago
    Auto-check passed

Works with

Categories

Questions about Es X Snapshot Config Update

What does Es X Snapshot Config Update do?

Update eslint-plugin-es-x for a newly finalized yearly ECMAScript/ECMA-402 snapshot in its own dedicated PR. Es X Snapshot Config Update is an agent skill from eslint-community/eslint-plugin-es-x. Update eslint-plugin-es-x for a newly finalized yearly ECMAScript/ECMA-402 snapshot in its own dedicated PR.

When should I use Es X Snapshot Config Update?

Es X Snapshot Config Update fits situations like: preparing a major release that moves the latest snapshot year forward; updates scripts/rules.ts LATESTESYEAR; regenerates no-new-in-esYYYY and restrict-to-esYYYY configs; refreshes generated docs/index files.

How do I install Es X Snapshot Config Update in Claude Code?

Run `npx skills add eslint-community/eslint-plugin-es-x --skill es-x-snapshot-config-update -a claude-code`. Or copy the skill folder (.agents/skills/es-x-snapshot-config-update in eslint-community/eslint-plugin-es-x) into .claude/skills/es-x-snapshot-config-update in your project. Claude Code loads it when a task matches its description.

How do I install Es X Snapshot Config Update in Codex?

Run `npx skills add eslint-community/eslint-plugin-es-x --skill es-x-snapshot-config-update -a codex`. Or copy the skill folder (.agents/skills/es-x-snapshot-config-update in eslint-community/eslint-plugin-es-x) into .agents/skills/es-x-snapshot-config-update in your project. Codex loads it when a task matches its description.

Can I use Es X Snapshot Config Update 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 eslint-community/eslint-plugin-es-x --skill es-x-snapshot-config-update -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/es-x-snapshot-config-update, .gemini/skills/es-x-snapshot-config-update, .github/skills/es-x-snapshot-config-update and .opencode/skills/es-x-snapshot-config-update in your project.

What does Es X Snapshot Config Update need to run?

Going by SKILL.md and its folder, Es X Snapshot Config Update needs the command-line tools its instructions call (git and npm). Our summary lists: Node.js.

Does Es X Snapshot Config Update access the network?

SKILL.md contains no URLs. Its commands use git and npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Es X Snapshot Config Update 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 Es X Snapshot Config Update use?

Es X Snapshot Config Update is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Es X Snapshot Config Update use?

About 550 tokens (SKILL.md is roughly 2.2k 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 Es X Snapshot Config Update?

Skills that share tags, products or a category with Es X Snapshot Config Update: Ultracite (agustinusnathaniel/nextarter-tailwind, 125 stars), Code Quality (redis/RedisInsight, 8.9k stars), Port Rule (web-infra-dev/rslint, 461 stars) and Migrate Oxlint (Asvarox/allkaraoke, 261 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Es X Snapshot Config Update?

eslint-community (a GitHub organization) maintains it in eslint-community/eslint-plugin-es-x, which has 157 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on September 25, 2026.

Source: eslint-community/eslint-plugin-es-x on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.