Symfony JS Handler

About

The js-handler skill for Symfony StarterKit streamlines the creation of modular, high-performance client-side logic. It automates the generation of JavaScript files that adhere to rigid architectural standards, including IIFE encapsulation, immutability, and mandatory error handling. By enforcing functional constraints like 60-line limits and specific assertion patterns, this skill ensures that DOM interactions and API calls remain maintainable and bug-resistant while seamlessly integrating with Twig-based translation systems.

Key Features

• Optimizes pattern for asynchronous API calls and DOM logic
• Mandates input validation and explicit error assertions
• Integrates automatically with Symfony Twig tradJS translations
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• Enforces clean code standards like immutability and bounded loops
• Enforces IIFE and strict mode for robust scoping

Use Cases

• Building modular frontend logic that requires localized strings via Twig
• Creating standardized wrappers for asynchronous API data fetching
• Implementing complex DOM interactions for specific Symfony feature pages