import { StateOperator } from '@ngxs/store';
import { RepairType } from './utils';
import { Predicate } from './internals';
/**
 * @param condition - Condition can be a plain boolean value or a function,
 * that returns boolean, also this function can take a value as an argument
 * to which this state operator applies
 * @param trueOperatorOrValue - Any value or a state operator
 * @param elseOperatorOrValue - Any value or a state operator
 */
export declare function iif<T>(condition: Predicate<T> | boolean, trueOperatorOrValue: StateOperator<T> | T, elseOperatorOrValue?: StateOperator<T> | T): StateOperator<RepairType<T>>;