Web Reference: It just so happens that TypeScript has something called a type guard. A type guard is some expression that performs a runtime check that guarantees the type in some scope. Jan 24, 2025 · Here are the methods to use type guards in TypeScript: 1. Using typeof Type Guards The typeof operator checks the type of a variable, primarily for primitive types like string, number, boolean, etc. TypeScript Type Guards are powerful constructs that allow you to narrow down the type of a variable within a specific scope. They help TypeScript understand and enforce type safety by providing explicit checks that determine the specific type of a variable at runtime.
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