1 export declare function boolean(value: any): value is boolean;
2 export declare function string(value: any): value is string;
3 export declare function number(value: any): value is number;
4 export declare function error(value: any): value is Error;
5 export declare function func(value: any): value is Function;
6 export declare function array<T>(value: any): value is T[];
7 export declare function stringArray(value: any): value is string[];