import Tuple from "./Tuple";
import Stream from "./Stream";
import { symValueStringify, symValueType } from "./internalSymbols";
export default class Relation {
    header: Tuple;
    all: Tuple[];
    tuples: Tuple[];
    errors?: Tuple[];
    headerAttrToIndex?: Map<string, number>;
    [symValueType]: string;
    constructor(tuples: Tuple[]);
    errorsToErrorObject(): Error | null;
    stringify(): string;
    [symValueStringify](): string;
    getOrInferHeader(): Tuple;
    getTuplesSortedByHeader(): Tuple[];
}
export declare function receiveToRelationInStream(out: Stream, attrName: string): Stream;
export declare function receiveToRelationSync(): [Stream, () => Relation];
export declare function receiveToRelationAsync(): [Stream, Promise<Relation>];