Skills modern-javascript-patterns
📦

modern-javascript-patterns

Content revision r2 Medium Risk ⚡ Contains scripts⚙️ External commands🌐 Network access

Modernize JavaScript with Proven ES6+ Patterns

Legacy JavaScript is difficult to maintain and often hides asynchronous errors. This skill guides refactoring with ES6+, functional patterns, modules, and performance practices.

Supports: Claude Codex Code(CC)
📊 69 Adequate

Install with my Agent

Copy this request to your Agent. It includes the canonical Skill page and manifest.

Agent request
Review the Skillstore skill "modern-javascript-patterns" from https://skillstore.io/skills/sickn33-modern-javascript-patterns.md and its manifest at https://skillstore.io/api/skills/sickn33-modern-javascript-patterns/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.

Your Agent should still show its plan and request any confirmation required by the security policy.

Agent-readable resources

Use these links when an AI agent, crawler, or script needs clean context instead of reading the full page.

Markdown detail GET /skills/sickn33-modern-javascript-patterns.md Signed manifest GET /api/skills/sickn33-modern-javascript-patterns/manifest Signed lockfile GET /api/skills/sickn33-modern-javascript-patterns/lockfile

Test it

Using "modern-javascript-patterns". Explain when to use destructuring in a user profile function.

Expected outcome:

Use parameter destructuring when the function reads a known subset of fields. Add defaults for optional fields and avoid deeply nested patterns.

Using "modern-javascript-patterns". Modernize a sequential Promise chain that loads independent resources.

Expected outcome:

  • Identify which requests have no dependency.
  • Run independent requests together with a Promise coordination method.
  • Handle failures at the workflow boundary and keep dependent steps sequential.

Using "modern-javascript-patterns". Review an array transformation that mutates its source.

Expected outcome:

Replace in-place updates with map, filter, or object spread. Confirm that nested values do not require a deeper immutable update.

Security Audit

Medium Risk
v5 • 8/4/2026 Open versioned report

All 29 static findings are false positives from Markdown examples, JavaScript template literals, or inline file references. Two educational examples remain unsafe: fake password hashing and unescaped HTML interpolation.

2
Files scanned
955
Lines analyzed
0
Review items
0
False positives ignored

Confirmed security concerns (2)

Medium
resources/implementation-playbook.md:665-666
Insecure Password Hashing Example
The method labels a predictable plaintext prefix as password hashing. Copying this pattern would leave passwords directly recoverable.
The method named #hashPassword returns the password with only a fixed prefix. No cryptographic hashing or salt is used.
Medium
resources/implementation-playbook.md:208-218
Unescaped HTML Template Values
The tagged template inserts values into HTML without escaping. Rendering the result as HTML could allow script injection from untrusted values.
The reducer places each value directly between HTML tags. The example shows no escaping, although it does not show a browser DOM sink.

Risk Factors

⚡ Contains scripts (3)
resources/implementation-playbook.md:727 resources/implementation-playbook.md:728 resources/implementation-playbook.md:732
⚙️ External commands (15)
resources/implementation-playbook.md:109-112 resources/implementation-playbook.md:178-187 resources/implementation-playbook.md:194-197 resources/implementation-playbook.md:202-206 resources/implementation-playbook.md:206-212 resources/implementation-playbook.md:212-218 resources/implementation-playbook.md:218-220 resources/implementation-playbook.md:246-260 resources/implementation-playbook.md:337-368 resources/implementation-playbook.md:661-666 resources/implementation-playbook.md:666-693 resources/implementation-playbook.md:693-696 resources/implementation-playbook.md:789-800 SKILL.md:34 SKILL.md:38
🌐 Network access (4)
resources/implementation-playbook.md:337 resources/implementation-playbook.md:387 resources/implementation-playbook.md:393 resources/implementation-playbook.md:789
Audited by: codex View Audit History →
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Open versioned report
Security Assessment

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Academic citations (APA · BibTeX · CFF)

APA citation

sickn33. (2026). modern-javascript-patterns security audit report (audit version 5) [Author version unspecified]. Skillstore. https://skillstore.io/skills/sickn33-modern-javascript-patterns/audits/5

BibTeX citation

@techreport{sickn33-sickn33-modern-javascript-patterns-2026, author = {sickn33}, title = {modern-javascript-patterns security audit report (audit version 5)}, institution = {Skillstore}, year = {2026}, number = {5}, url = {https://skillstore.io/skills/sickn33-modern-javascript-patterns/audits/5}, note = {Author version unspecified} }

CITATION.cff

cff-version: 1.2.0 message: "If you use this Skill, cite its author and this versioned security audit report." title: "modern-javascript-patterns security audit report (audit version 5)" version: "unspecified" type: report authors: - name: "sickn33" date-released: "2026-08-04" url: "https://skillstore.io/skills/sickn33-modern-javascript-patterns/audits/5" identifiers: - type: other value: "skillstore:sickn33-modern-javascript-patterns:audit:5" description: "Skillstore immutable audit report identifier"

Compare variants

2 installable variants

Each author remains a separate installable skill. The recommended variant is ranked by Skillstore evidence.

Why this variant is first

Highest Skillstore Score
wshobson Recommended

wshobson-modern-javascript-patterns

Skillstore Score 77
Evidence Confidence High
Skillstore usage 18
Updated

2026-08-21

sickn33 Current

sickn33-modern-javascript-patterns

Skillstore Score 69
Evidence Confidence High
Skillstore usage 11
Updated

2026-08-21

Skillstore Score

Why this score Evidence Confidence: High
55
Architecture
85
Maintainability
87
Content
69
Community
83
Spec Compliance

What You Can Build

Refactor Legacy Frontend Code

Replace callbacks, manual loops, and repetitive object handling with readable modern JavaScript.

Standardize Team Patterns

Create consistent guidance for asynchronous flows, immutable updates, modules, and error handling.

Learn Modern JavaScript

Study focused examples covering ES6+ syntax, functional programming, classes, generators, and performance.

Try These Prompts

Explain a Modern Feature 
Explain [JavaScript feature] with one practical example. Compare it with the older syntax and identify common mistakes.
Refactor a Function 
Refactor this JavaScript function using appropriate ES6+ patterns: [function]. Preserve behavior and explain each meaningful change.
Modernize Async Control Flow 
Rewrite this callback or Promise workflow with async and await: [code]. Add error handling and preserve concurrency where useful.
Review a JavaScript Module 
Review this module for maintainability, immutability, asynchronous correctness, and performance: [module]. Propose prioritized changes with validation steps.

Best Practices

  • Preserve behavior with tests before refactoring syntax or control flow.
  • Choose patterns that improve clarity instead of applying every modern feature.
  • Validate runtime support, error paths, and performance assumptions in the target environment.

Avoid

  • Do not convert dependent asynchronous steps into uncontrolled parallel work.
  • Do not assume object spread creates deep copies of nested data.
  • Do not place untrusted values into HTML or dynamic import paths without validation.

Frequently Asked Questions

Does this skill require a specific JavaScript framework?
No. The guidance focuses on language features and patterns that apply across browsers, Node.js, and common frameworks.
Can it convert callbacks to async and await?
Yes. It can propose conversions while preserving sequencing, concurrency, error handling, and return behavior.
Does it support TypeScript?
The core patterns often apply, but the skill does not provide detailed type design or TypeScript-specific compiler guidance.
Will it test or benchmark my code?
No. It can recommend validation steps, but you must run tests and benchmarks in the target environment.
Can it improve JavaScript performance?
It can identify common opportunities such as memoization, lazy evaluation, and concurrency. Measure changes before accepting them.
Are all playbook examples production ready?
No. They are concise teaching examples. Security, compatibility, error handling, and operational requirements still need review.

Developer Details

Author

sickn33

License

MIT

Skillstore revision

r2

Version notice

The author did not declare a version.

Repository

https://github.com/sickn33/antigravity-awesome-skills/tree/main/skills/modern-javascript-patterns

Ref

81e05e636292629114b76cbb3922fbe57672fc02

Maintenance freshness

8/5/2026

Usage

8 downloads · 147 views

File structure

📁 resources/

📄 implementation-playbook.md

📄 SKILL.md

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