import { IContextFreeGrammar } from "./types";
export interface VariableReferenceLocation {
    variable: string;
    ruleNumber: number;
    tokenNumber: number;
}
/**
 * Return a record providing details of the location of each variable of the cfg
 * @param cfg Input context free grammar
 * @returns A record which provides info regarding the location of a variable
 */
export default function generateVariableReferenceRecord(cfg: Pick<IContextFreeGrammar, "productionRules" | "variables">): Record<string, VariableReferenceLocation[]>;