JavaScript Language Patterns

Priority: P0 (CRITICAL)

Modern JavaScript standards for clean, maintainable code.

Implementation Guidelines

• Variables: const default. let if needed. No var.
• Functions: Arrows for callbacks. Declarations for top-level.
• Async: async/await + try/catch.
• Objects: Destructuring, Spread ..., Optional Chain ?., Nullish ??.
• Strings: Template literals ${}.
• Arrays: map, filter, reduce. No loops.
• Modules: ESM import/export.
• Classes: Use #private fields.

Anti-Patterns