Problem with type definitions for interfaces

[Radek-cgs]

It seems there is some problem with typing of interfaces (not, any, all).

E.g. is.empty('Alice') is ok, but if I use is.not.empty('Alice') then type checker claims
"Property 'existy' does not exist on type '{}'.ts-plugin(2339)"

I guess the cause of problem is that interfaces are declared in is-it-check.d.ts as

export declare let not: {};
export declare let all: {};
export declare let any: {};

It likely should be something like

export declare let not: any;
export declare let all: any;
export declare let any: any;

but I do not consider myself to be an expert... :-)