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6/28/2026

How to Use the any Type and When to Avoid It
Short summary
The TypeScript `any` type silently disables type checking, allowing runtime errors to pass undetected in production. Learn why `any` spreads type-safety vulnerabilities through codebases, how `unknown` provides a safer alternative with type guards, and when to use each.
- •any disables TypeScript checking entirely, allowing bugs to reach runtime undetected
- •unknown is safer—it requires type guards before use, maintaining type safety
- •only use any for legacy JS migration or untyped libraries; unknown is preferred
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