import { DefaultConfig, PostmanCollection, Variable } from "../types/postman.types";
export declare class VariableValidator {
    private config;
    private usedVariables;
    constructor(config?: DefaultConfig);
    validate(collection: PostmanCollection): Variable[];
    private collectUsedVariables;
    private collectFromItems;
    private collectFromRequest;
    private collectFromResponse;
    private collectFromAuth;
    private collectFromEvents;
    private extractVariablesFromText;
}