import { Observable } from 'rxjs';
import { $ } from '../e';
export { not, truthy } from '../boolean';
export declare function and(a: $<boolean>, ...bools: $<boolean>[]): (o: Observable<boolean>) => Observable<boolean>;
export declare function or(a: $<boolean>, ...bools: $<boolean>[]): (o: Observable<boolean>) => Observable<boolean>;
export declare function eq(a: $<any>, ...rest: $<any>[]): (o: Observable<any>) => Observable<boolean>;
export declare function neq(a: $<any>, ...rest: $<any>[]): (o: Observable<any>) => Observable<boolean>;