TypeScript card review1 min read
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What is Type Narrowing in TypeScript?

Type Narrowing is the process by which TypeScript reduces a broader type into a more specific type based on runtime checks. It can occur through typeof checks, instanceof checks, custom type guards, and control flow analysis. This feature improves type safety and reduces the need for type assertions.

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JB

Jeevan Bhargav

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This answer is calibrated for technical interviews. Verify benchmarks in local sandboxes before deploying.