# Accelint Ts Best Practices > Comprehensive TypeScript/JavaScript coding standards focusing on type safety, defensive programming, and code correctness. Use when (1) Writing or reviewing TS/JS code, (2) Fixing type errors or avoiding any/enum/null, (3) Implementing control flow, state management, or error handling, (4) Applying zero-value pattern or immutability, (5) Code review for TypeScript anti-patterns. Covers naming con… - **Type:** Skill - **Install:** `agentstack add skill-gohypergiant-agent-skills-accelint-ts-best-practices` - **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior - **Seller:** [gohypergiant](https://agentstack.voostack.com/s/gohypergiant) - **Installs:** 0 - **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills) - **Latest version:** 0.1.0 - **License:** Apache-2.0 - **Upstream author:** [gohypergiant](https://github.com/gohypergiant) - **Source:** https://github.com/gohypergiant/agent-skills/tree/main/skills/accelint-ts-best-practices ## Install ```sh agentstack add skill-gohypergiant-agent-skills-accelint-ts-best-practices ``` Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent. ## About # JavaScript and TypeScript Best Practices Comprehensive coding standards for JavaScript and TypeScript applications, designed for AI agents and LLMs working with modern JavaScript/TypeScript codebases. **Note:** This skill focuses on general best practices, TypeScript patterns, and safety. For performance optimization, use the `accelint-ts-performance` skill instead. ## When to Use This Skill This skill provides expert-level patterns for JavaScript and TypeScript code. Load [AGENTS.md](AGENTS.md) to scan rule summaries and identify relevant optimizations for your task. ## How to Use This skill uses a **progressive disclosure** structure to minimize context usage: ### 1. Start with the Overview (AGENTS.md) Read [AGENTS.md](AGENTS.md) for a concise overview of all rules with one-line summaries organized by category. ### 2. Load Specific Rules as Needed When you identify a relevant pattern or issue, load the corresponding reference file for detailed implementation guidance: **Quick Start:** - [quick-start.md](references/quick-start.md) - Complete workflow examples with before/after code **General Best Practices:** - [naming-conventions.md](references/naming-conventions.md) - Descriptive names, qualifier ordering, boolean prefixes - [functions.md](references/functions.md) - Function size, parameters, explicit values - [control-flow.md](references/control-flow.md) - Early returns, flat structure, block style - [state-management.md](references/state-management.md) - const vs let, immutability, pure functions - [return-values.md](references/return-values.md) - Return zero values instead of null/undefined - [misc.md](references/misc.md) - Line endings, defensive programming, technical debt - [code-duplication.md](references/code-duplication.md) - Extract common patterns, DRY principle, when to consolidate **TypeScript:** - [any.md](references/any.md) - Avoid any, use unknown or generics - [enums.md](references/enums.md) - Use as const objects instead of enum - [type-vs-interface.md](references/type-vs-interface.md) - Prefer type over interface - [bundler-paths.md](references/bundler-paths.md) - Use statically analyzable import and file-system paths for optimal bundling **Safety:** - [input-validation.md](references/input-validation.md) - Validate external data with schemas - [assertions.md](references/assertions.md) - Split assertions, include values - [error-handling.md](references/error-handling.md) - Handle all errors explicitly - [error-messages.md](references/error-messages.md) - User-friendly vs developer-specific messages **Performance:** - **For performance optimization tasks**, use the `accelint-ts-performance` skill for comprehensive profiling workflows and optimization patterns **Documentation:** - **For documentation tasks**, use the `accelint-ts-documentation` skill for comprehensive JSDoc and comment guidance ### 3. Apply the Pattern Each reference file contains: - ❌ Incorrect examples showing the anti-pattern - ✅ Correct examples showing the optimal implementation - Explanations of why the pattern matters ### 4. Use the Report Template When this skill is invoked, use the standardized report format: **Template:** [`assets/output-report-template.md`](assets/output-report-template.md) The report format provides: - Executive Summary with impact assessment - Severity levels (Critical, High, Medium, Low) for prioritization - Impact analysis (potential bugs, type safety, maintainability, runtime failures) - Categorization (Type Safety, Safety, State Management, Return Values, Code Quality) - Pattern references linking to detailed guidance in references/ - Phase 2 summary table for tracking all issues **When to use the audit template:** - Skill invoked directly via `/accelint-ts-best-practices ` - User asks to "review code quality" or "audit code" across file(s), invoking skill implicitly **When NOT to use the report template:** - User asks to "fix this type error" (direct implementation) - User asks "what's wrong with this code?" (answer the question) - User requests specific fixes (apply fixes directly without formal report) ## Source & license This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code. - **Author:** [gohypergiant](https://github.com/gohypergiant) - **Source:** [gohypergiant/agent-skills](https://github.com/gohypergiant/agent-skills) - **License:** Apache-2.0 Install and usage instructions live in the source repository linked above. ## Pricing - **Free** — Free ## Security capabilities Automated source analysis of v0.1.0 — what this tool can access: - **Network access:** no - **Filesystem access:** no - **Shell / process execution:** no - **Environment & secrets:** no - **Dynamic code execution:** no *"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.* ## Versions - **0.1.0** — security scan: passed — Imported from the upstream source. ## Links - Listing page: https://agentstack.voostack.com/l/skill-gohypergiant-agent-skills-accelint-ts-best-practices - Seller: https://agentstack.voostack.com/s/gohypergiant - Browse the marketplace: https://agentstack.voostack.com/browse --- Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.