import { AggregationBuilder } from './../../main';
import { LookupConditionInterface, StageInterface, LookupVariableListInterface } from "../../interfaces";
export declare const ConditionPayload: (from: string, as: string, optional?: {
    project?: {
        [index: string]: any;
    } | undefined;
    pipeline?: StageInterface[] | undefined;
    nestedAggregation?: AggregationBuilder | undefined;
    variableList?: (string | LookupVariableListInterface)[] | undefined;
} | undefined) => LookupConditionInterface;