import * as rgraphql from 'rgraphql';
export interface IVariableReference {
    id: number;
    name: string;
    varb: Variable;
    clone(): IVariableReference | undefined;
    unsubscribe(): void;
}
export declare class Variable {
    id: number;
    name: string;
    value: any;
    removed: boolean;
    private referenceCounter;
    private references;
    constructor(id: number, name: string, value: any);
    toProto(): rgraphql.ASTVariable;
    get hasReferences(): boolean;
    addReference(): IVariableReference;
}
export type AddVariableCallback = (varb: Variable) => void;
export declare class VariableStore {
    private cb;
    private variableIdCounter;
    private variableNameCounter;
    private variables;
    constructor(cb: AddVariableCallback | null);
    getVariable(value: any): IVariableReference;
    getVariableByName(name: string): IVariableReference | null;
    forEach(cb: (vb: Variable) => void): void;
    garbageCollect(): void;
}