import { ProcessRequirementModel } from "./ProcessRequirementModel";
import { EnvVarRequirement as V1EnvVarRequirement } from "../../mappings/v1.0";
import { EnvVarRequirement as SBDraft2EnvVarRequirement } from "../../mappings/d2sb/EnvVarRequirement";
import { EventHub } from "../helpers/EventHub";
import { ExpressionModel } from "./ExpressionModel";
export declare type EnvVarRequirement = V1EnvVarRequirement | SBDraft2EnvVarRequirement;
export interface EnvironmentDefModel {
    envName: string;
    envValue: ExpressionModel;
}
export declare abstract class EnvVarRequirementModel extends ProcessRequirementModel {
    protected eventHub: EventHub;
    readonly class: string;
    envDef: EnvironmentDefModel[];
    constructor(req?: EnvVarRequirement, loc?: string, eventHub?: EventHub);
}