Resume Modern
nexu-io/open-design
Modern minimal resume, single A4 page, ready for print or PDF export.
A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Use modern array and object methods.
MITAuto-check passed
Install Modern Array Methods
$ npx skills add thedaviddias/Front-End-Checklist --skill modern-array-methods -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist modern-array-methods --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/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/modern-array-methods .claude/skills/modern-array-methods && 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 "modern-array-methods" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/modern-array-methods into .claude/skills/modern-array-methods/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "modern-array-methods", 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/thedaviddias/Front-End-Checklist/tree/main/skills/modern-array-methodsType 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 thedaviddias/Front-End-Checklist --skill modern-array-methods -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist modern-array-methods --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/modern-array-methods .agents/skills/modern-array-methods && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "modern-array-methods" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/modern-array-methods into .agents/skills/modern-array-methods/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "modern-array-methods", 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 thedaviddias/Front-End-Checklist --skill modern-array-methods -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist modern-array-methods --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/modern-array-methods .cursor/skills/modern-array-methods && 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 "modern-array-methods" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/modern-array-methods into .cursor/skills/modern-array-methods/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "modern-array-methods", 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/thedaviddias/Front-End-Checklist.git --path skills/modern-array-methods--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 thedaviddias/Front-End-Checklist --skill modern-array-methods -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist modern-array-methods --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/modern-array-methods .gemini/skills/modern-array-methods && 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 "modern-array-methods" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/modern-array-methods into .gemini/skills/modern-array-methods/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "modern-array-methods", 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 thedaviddias/Front-End-Checklist modern-array-methodsInstalls 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 thedaviddias/Front-End-Checklist --skill modern-array-methods -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/modern-array-methods .github/skills/modern-array-methods && 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 "modern-array-methods" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/modern-array-methods into .github/skills/modern-array-methods/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "modern-array-methods", 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 thedaviddias/Front-End-Checklist --skill modern-array-methods -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist modern-array-methods --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/modern-array-methods .opencode/skills/modern-array-methods && 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 "modern-array-methods" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/modern-array-methods into .opencode/skills/modern-array-methods/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "modern-array-methods", 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
modern-array-methods- GitHub stars
- 74k
- Token cost
- ~494 tokens
- SKILL.md length
- 194 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Use modern array and object methods.
- Reviewing scripts
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Client components
What it does
Modern Array Methods is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing scripts, client components, bundles, or runtime behavior related to Use modern array and object methods. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.
Its SKILL.md is about 490 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing scripts
- Client components
- Runtime behavior related to Use modern array and object methods
Example prompts
- “/modern-array-methods”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. 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.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
frontendchecklist.io
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
Modern Array Methods loads about 494 tokens when it runs, and up to ~1.4k if it reads all its reference files. Until then it costs about 61 tokens; SKILL.md has 194 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 thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 194 words, ~494 tokens.
Download SKILL.mdSave it as
.claude/skills/modern-array-methods/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- modern-array-methods
- description
- Use when reviewing scripts, client components, bundles, or runtime behavior related to Use modern array and object methods. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.
- metadata.category
- javascript
- metadata.priority
- medium
- metadata.difficulty
- beginner
- metadata.estimatedTime
- 15
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/javascript/modern-array-methods
Use modern array and object methods
Modern array and object methods produce code that directly expresses intent — a filter() call self-documents that you're selecting items. Manual for loops obscure the purpose behind implementation details. These methods are also well-optimized by JavaScript engines and support chaining for concise data transformations.
Quick Reference
- Use map() to transform arrays, filter() to select items, reduce() for aggregation
- Use find() and findIndex() instead of manual loops with break
- Use Object.entries() and Object.fromEntries() to transform objects
- Use structuredClone() for deep copying instead of JSON.parse(JSON.stringify())
Check
Find loops in this file that could be replaced with modern array methods like map, filter, reduce, find, or flatMap.
Fix
Replace manual for/while loops with appropriate array methods to make the code more declarative.
Explain
Explain map, filter, reduce, find, flatMap, and Object.entries with practical examples.
Code Review
Review scripts, client components, and browser execution paths related to Use modern array and object methods. Flag exact imports, event handlers, runtime side effects, or blocking operations that violate the rule, and state how the change should be verified in the browser.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/javascript/modern-array-methods
© thedaviddias, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in skills/modern-array-methods of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Modern Array Methods 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 |
|---|---|---|---|---|---|---|
| Modern Array Methods this skillthedaviddias/Front-End-Checklist | 74k | — | ~494 | Automated safety check: Pass | MIT | |
| Resume Modernnexu-io/open-design | 100k | — | ~398 | Automated safety check: Pass | Apache-2.0 | |
| React Modernizationwshobson/agents | 40k | 10 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Doc And Modernizegithub/awesome-copilot | 40k | — | ~12k | Automated safety check: Pass | MIT | |
| Triage Support Bundlenetdata/netdata | 81k | — | ~2.7k | Automated safety check: Pass | GPL-3.0 | |
| Compare Array Bundle SizePostHog/posthog-js | 613 | — | ~599 | Automated safety check: Pass | Custom licence |
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Triage Support Bundle
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Investigate a Netdata support bundle offline - the archive netdata-support-bundle produces - to explain one host's alerts, missing data, collector failures, crashes, high CPU or memory, streaming…
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Compare Array Bundle Size
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Quickly compare the posthog-js array.js bundle size in the current working tree against a git baseline using the repository's esbuild proxy.
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Multi-agent adversarial verification: two independent reviewers with the same rubric must both pass before output ships, with a fix-and-re-review convergence loop and human escalation cap.
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Questions about Modern Array Methods
What does Modern Array Methods do?
A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Use modern array and object methods. Modern Array Methods is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing scripts, client components, bundles, or runtime behavior related to Use modern array and object methods.
When should I use Modern Array Methods?
Modern Array Methods fits situations like: reviewing scripts; client components; runtime behavior related to Use modern array and object methods.
How do I install Modern Array Methods in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill modern-array-methods -a claude-code`. Or copy the skill folder (skills/modern-array-methods in thedaviddias/Front-End-Checklist) into .claude/skills/modern-array-methods in your project. Claude Code loads it when a task matches its description.
How do I install Modern Array Methods in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill modern-array-methods -a codex`. Or copy the skill folder (skills/modern-array-methods in thedaviddias/Front-End-Checklist) into .agents/skills/modern-array-methods in your project. Codex loads it when a task matches its description.
Can I use Modern Array Methods 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 thedaviddias/Front-End-Checklist --skill modern-array-methods -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/modern-array-methods, .gemini/skills/modern-array-methods, .github/skills/modern-array-methods and .opencode/skills/modern-array-methods in your project.
What does Modern Array Methods need to run?
SKILL.md names no scripts, command-line tools or credentials: Modern Array Methods is instructions for the agent only.
Does Modern Array Methods access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is Modern Array Methods 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 Modern Array Methods use?
Modern Array Methods 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 Modern Array Methods use?
About 494 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 929 tokens, read only when the agent opens those files.
What are the alternatives to Modern Array Methods?
Skills that share tags, products or a category with Modern Array Methods: Resume Modern (nexu-io/open-design, 100k stars), React Modernization (wshobson/agents, 40k stars), Doc And Modernize (github/awesome-copilot, 40k stars) and Triage Support Bundle (netdata/netdata, 81k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Modern Array Methods?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,388 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.