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harden

Add error handling, layout safeguards, internationalization, and graceful degradation to interfaces.

1|Updated Oct 27, 2025
Search Tags:#testing#accessibility#resilience#i18n#error-handling#hardening#text-overflow
One-click install
npx skills add https://github.com/sandrasocial/sselfie-9g --skill harden-sandrasocial
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: harden
Source: https://github.com/sandrasocial/sselfie-9g/tree/main/.agents/skills/harden
Command: npx skills add https://github.com/sandrasocial/sselfie-9g --skill harden-sandrasocial

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Strengthen UI and UX layers so they survive real-world data, network failures, and diverse user environments instead of breaking in perfect-demo conditions. It helps teams avoid brittle layouts, confusing error messages, and localisation issues that cause user frustration and loss of trust.

Core Features & Use Cases

  • Text overflow & layout resilience: guidance for truncation, wrapping, min-width handling, and responsive typography to prevent broken cards and overflow in grids and flex layouts.
  • Error handling & graceful recovery: patterns for network retry, clear error messaging, retry affordances, offline fallbacks, and avoiding global UI failure when a component errors.
  • Internationalization & accessibility: recommendations for text expansion budgets, RTL support, Intl-based date/number formatting, proper ARIA labels, keyboard navigation, and motion sensitivity.
  • Performance & testing: strategies for skeletons, virtualization for large lists, debouncing/throttling, and manual plus automated test cases for edge inputs and slow networks.

Quick Start

Ask harden to review a specific component (for example the ProfileCard) and return a prioritized list of fixes for text overflow, error states, i18n adjustments, accessibility gaps, and recommended tests.

Frequently Asked Questions about harden

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I make UI components resilient against text overflow and layout breaking?▼

To make UI components resilient against text overflow, apply truncation, wrapping, min-width handling, and responsive typography to prevent broken cards and visual overflow in grid and flex layouts.

What is the best way to handle API network failures and slow connections in web apps?▼

Handling API network failures involves implementing network retry patterns, clear error messaging, retry affordances, and offline fallbacks to ensure graceful degradation during slow or offline network conditions.

How do I add internationalization and RTL language support to existing components?▼

Adding internationalization and RTL support requires defining text expansion budgets, implementing RTL layouts, and using Intl-based date and number formatting alongside proper ARIA labels.

Can I apply error handling and graceful degradation strategies to mobile apps?▼

Yes, you can apply error handling and graceful degradation strategies to mobile apps by targeting UI components, API integration points, and content rendering paths for robust offline fallback and recovery.

Why does my interface break with large datasets and concurrent operations?▼

Interfaces break with large datasets because they lack performance safeguards like list virtualization, debouncing, and throttling, which are needed to handle concurrent operations and large data rendering.

How do I write automated tests for edge cases and boundary conditions?▼

Writing automated tests for edge cases involves generating manual and automated test cases that target boundary conditions, slow networks, very long text, and empty states to verify component resilience.

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