Comprehensive frontend development skill for building modern, performant web applications using ReactJS, NextJS, TypeScript, Tailwind CSS. Includes component scaffolding, performance optimization, bundle analysis, and UI best practices. Use when developing frontend features, optimizing performance, implementing UI/UX designs, managing state, or reviewing frontend code.
59
49%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./.claude/skills/senior-frontend/SKILL.mdQuality
Discovery
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.
This is a strong description that clearly communicates capabilities and trigger conditions. It names specific technologies and actions, includes a well-formed 'Use when...' clause, and uses appropriate third-person voice. The main weakness is its broad scope, which could cause overlap with more specialized frontend or performance-related skills in a large skill library.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: component scaffolding, performance optimization, bundle analysis, UI best practices, state management, and frontend code review. | 3 / 3 |
Completeness | Clearly answers both 'what' (component scaffolding, performance optimization, bundle analysis, UI best practices with React/Next/TS/Tailwind) and 'when' with an explicit 'Use when...' clause listing five trigger scenarios. | 3 / 3 |
Trigger Term Quality | Includes strong natural keywords users would say: ReactJS, NextJS, TypeScript, Tailwind CSS, frontend, performance optimization, UI/UX, state management, component scaffolding, bundle analysis. These cover common terms developers naturally use. | 3 / 3 |
Distinctiveness Conflict Risk | While it specifies frontend technologies (React, Next, TypeScript, Tailwind), the scope is quite broad covering 'frontend development' generally. It could overlap with more specialized skills for performance optimization, code review, or state management. The breadth makes it somewhat conflict-prone in a large skill library. | 2 / 3 |
Total | 11 / 12 Passed |
Implementation
7%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill is almost entirely hollow—it has the structural appearance of a comprehensive guide but contains virtually no actionable content. Every section uses vague, generic language ('Deep analysis', 'Expert-level automation', 'Follow established patterns') without any concrete code examples, specific patterns, or real instructions for frontend development with React, Next.js, TypeScript, or Tailwind CSS. The tech stack section lists numerous irrelevant technologies, and the best practices are platitudes that Claude already knows.
Suggestions
Replace vague feature lists with actual executable code examples showing React component patterns, Next.js optimization techniques, and Tailwind CSS usage—the core technologies this skill claims to cover.
Remove generic advice Claude already knows ('Write clear code', 'Keep it simple', 'Validate all inputs') and replace with specific, novel patterns or project-specific conventions.
Provide concrete script arguments and example outputs for the component generator, bundle analyzer, and frontend scaffolder instead of placeholder '[options]' and '[arguments]'.
Trim the tech stack to only technologies relevant to the skill's stated scope (React, Next.js, TypeScript, Tailwind CSS) and remove unrelated items like Go, Swift, Kotlin, Kubernetes, and Terraform.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Extremely verbose with almost no substantive content. The skill is padded with generic platitudes ('Follow established patterns', 'Write clear code', 'Keep it simple') and vague feature lists ('Deep analysis', 'Expert-level automation', 'Production-grade output') that convey zero actionable information. The tech stack section lists technologies far beyond the skill's stated scope (Go, Swift, Kotlin, Kubernetes, Terraform). Nearly every token is wasted. | 1 / 3 |
Actionability | No concrete, executable guidance exists anywhere in this skill. Script invocations reference files that may or may not exist with placeholder arguments like '[options]' and '[arguments]'. There are no actual code examples showing React patterns, Next.js optimization, TypeScript usage, or Tailwind CSS—the core technologies in the skill's description. The 'best practices' are entirely abstract ('Use appropriate caching', 'Optimize critical paths'). | 1 / 3 |
Workflow Clarity | The 'Development Workflow' section lists three vague steps (setup, run quality checks, implement best practices) with no validation checkpoints, no error recovery, and no meaningful sequencing. Step 3 is literally 'follow the patterns documented in reference files.' There are no feedback loops for any operation. | 1 / 3 |
Progressive Disclosure | The skill does reference external files (references/react_patterns.md, references/nextjs_optimization_guide.md, references/frontend_best_practices.md) with one-level-deep navigation, which is structurally appropriate. However, the overview itself contains no useful content to serve as a meaningful entry point—it's all filler. The references are mentioned multiple times redundantly (in Reference Documentation, in Implement Best Practices, and in Resources). | 2 / 3 |
Total | 5 / 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.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
7aff694
Table of Contents
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