type-plus/esm/type-guard/is_type.d.ts

Provides additional types for TypeScript.

import type { IsEqual } from '../equal/equal.js';
/**
 * Is the subject of type T
 */
export declare function isType<T>(subject: T): subject is T;
/**
 * Is the subject of type T, satisfying the supplied validator
 */
export declare function isType<T>(subject: unknown, validator: (s: T) => unknown): subject is T;
export declare namespace isType {
    var t: <T extends true>(subject?: T | undefined) => boolean;
    var f: <T extends false>(subject?: T | undefined) => boolean;
    var never: typeof isNever;
    var equal: <_C extends IsEqual<A, B>, A, B>() => void;
}
/**
 * Check is the type `never`
 * @deprecated use `isType<T>()` or `testType.never<T>()` instead
 */
declare function isNever<S extends never>(): unknown;
/**
 * Check is the value is type `never`
 * @deprecated use `isType<T>()` or `testType.never<T>()` instead
 */
declare function isNever(subject: never): subject is never;
export {};
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