How to Defend Your JavaScript App Against Unsafe Data with TypeScript Guard Utilities
SMRTR summary
JavaScript's loose typing and TypeScript's compile-time-only guarantees leave a dangerous gap when real API data arrives at runtime. Four lightweight utility functions — safeArray, safeString, safeNumber, and safeObject — close that gap by validating unknown values at the boundary and returning safe fallbacks, preventing crashes, silent corruption, and defensive boilerplate scattered throughout your codebase.
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