@ganbarodigital/ts-lib-value-objects/lib/v2/types/TypeGuard.d.ts

Helps you create value objects and refined types for safer software

/**
 * A TypeGuard inspects a piece of data to see if the data is the given
 * type.
 *
 * If the given data is the given type, the function returns `true`.
 * It returns `false` otherwise.
 *
 * TypeGuards are a form of runtime robustness check. They're used to
 * make sure that the given input is the type you think it is, before you
 * try and use that input. They help prevent runtime errors.
 */
export declare type TypeGuard<T> = (input: unknown) => input is T;
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