typescanner/dist/typeGuard/index.d.ts

A simple library for implementing type guard in TypeScript.

import type { Condition, WouldBe } from "../types";
export declare const isString: Condition<string>;
export declare const isNumber: Condition<number>;
export declare const isBoolean: Condition<boolean>;
export declare const isSymbol: Condition<symbol>;
export declare const isBigint: Condition<bigint>;
export declare const isUndefined: Condition<undefined>;
export declare const isNull: Condition<null>;
export declare const isDate: Condition<Date>;
export declare const isUnion: <T>(value: unknown, ...conditions: Condition<T>[]) => value is T;
export declare const isArray: <T>(array: unknown, ...conditions: ((value: unknown) => value is T)[]) => array is T[];
export declare const isObject: <T extends Record<string, unknown>>(value: unknown) => value is WouldBe<T>;
export declare const isOptional: <T>(value: unknown, ...conditions: ((value: unknown) => value is T)[]) => value is T | undefined;
export declare const isList: <T>(value: unknown, array: Exclude<T[], never[]>) => value is T;
export declare const isInstanceOf: <T>(value: unknown, constructor: new (...args: any[]) => T) => value is T;