export declare class VariableManager {
    private static readonly _NavPattern;
    private static _Instance;
    static get Instance(): VariableManager;
    readonly vars: {
        [key: string]: any;
    };
    constructor();
    reset(): void;
    init(initVar?: any): void;
    declare(varObj: any): void;
    diffWithGlobalVar(varObj: any): {};
    replace(varObj: any, obj: any, defaultKey?: string): Promise<void>;
    set(varObj: any, obj: any, defaultKey?: string): Promise<void>;
    eval(func?: string | Function, ctx?: any, mainContextProp?: string): Promise<any>;
    get(obj: any, ctx?: any): Promise<any>;
    isIncludeFormula(obj: any): boolean;
}