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modern-javascript-patterns

Master ES6+ features including async/await, destructuring, spread operators, arrow functions, promises, modules, iterators, generators, and functional programming patterns for writing clean, efficient JavaScript code. Use when refactoring legacy code, implementing modern patterns, or optimizing JavaScript applications.

64

Quality

Does it follow best practices?

Impact

No eval scenarios have been run

SecuritybySnyk

Passed

No known issues

SKILL.md
Quality
Evals
Security

Quality

Content

57%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is well-structured with good progressive disclosure via two real reference files, but it lacks executable code examples and includes some basic best-practice reminders Claude already knows. Adding a few concrete code snippets and trimming generic items would lift the weaker dimensions.

Suggestions

Add 2-3 short executable JavaScript code blocks to the body (e.g., an async/await example and a destructuring/spread example) so guidance is copy-paste ready rather than directive-only.

Trim or merge basic reminders Claude already knows ('Use meaningful variable names', 'Keep functions small', 'Use strict mode') to improve token efficiency.

Tighten the 'When to Use This Skill' list to avoid duplicating the description's trigger phrasing.

DimensionReasoningScore

Conciseness

The body is mostly lean with no padded prose, but several best-practice items restate basics Claude already knows ('Use meaningful variable names', 'Keep functions small', 'Use strict mode'), so not every token earns its place.

2 / 3

Actionability

It gives 15 specific directives like 'Use async/await instead of Promise chains' and 'Use optional chaining to prevent ... undefined', but the body contains no executable code examples — concrete guidance is present yet incomplete, with code deferred to references.

2 / 3

Workflow Clarity

Content is organized into clear sections (When to Use, Best Practices, references), but this is a reference skill with no sequenced multi-step process or validation checkpoints, so the sequence anchor is only partially met.

2 / 3

Progressive Disclosure

The body is a concise overview that signals two one-level-deep references (references/details.md and references/advanced-patterns.md), both of which exist as real bundle files, giving easy navigation without nested references.

3 / 3

Total

9

/

12

Passed

Description

92%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is strong: specific, uses natural trigger terms, and explicitly covers both what the skill does and when to use it. Its main weakness is that several trigger phrases are somewhat generic and could overlap with broader coding skills.

DimensionReasoningScore

Specificity

Lists multiple concrete features (async/await, destructuring, spread operators, arrow functions, promises, modules, iterators, generators) and concrete actions (refactoring, implementing patterns, optimizing), matching the 'lists multiple specific concrete actions' anchor.

3 / 3

Completeness

Explicitly answers both what ('Master ES6+ features ... for writing clean, efficient JavaScript code') and when ('Use when refactoring legacy code, implementing modern patterns, or optimizing JavaScript applications'), with an explicit trigger clause.

3 / 3

Trigger Term Quality

Includes natural developer terms users would actually say — 'refactoring legacy code', 'async/await', 'arrow functions', 'destructuring', 'optimizing JavaScript applications' — giving good coverage rather than jargon-only phrasing.

3 / 3

Distinctiveness Conflict Risk

The JavaScript/ES6+ domain is a recognizable niche, but triggers like 'implementing modern patterns' and 'optimizing JavaScript applications' are generic enough to overlap with general coding skills, so it is not a clear distinct niche.

2 / 3

Total

11

/

12

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
wshobson/agents
Reviewed

Table of Contents

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