import { PivotFrame } from "./PivotFrame";
import { ColumnCursor, IterableFrame, Matrix, PivotProps, Schema, RowCursor } from "./types";
import { getData } from "./secret";
import { GroupFrame } from "./GroupFrame";
export declare class DataFrame<Name extends string = string> implements IterableFrame<Name> {
    private readonly data;
    readonly schema: Schema<Name>;
    private readonly cursorCache;
    private readonly referentialCache;
    constructor(schema: Schema<Name>, data: Matrix<any>);
    stats(): {
        columns: number;
        rows: number;
    };
    cell(rowIndex: number, columnIndex: number): any;
    row(rowIndex: number): any[];
    getCursor(column: Name): ColumnCursor<Name>;
    pivot<Column extends Name, Row extends Name>(prop: PivotProps<Column, Row>): PivotFrame<Name>;
    groupBy(columns: Array<Name | ColumnCursor<Name>>): GroupFrame<Name>;
    uniqueValues(columns: Array<Name | ColumnCursor<Name>>): string[][];
    mapRows<A>(callback: (row: RowCursor[], index: number) => A): A[];
    [getData](): readonly [{
        name: Name;
        type?: any;
    }[], any[][]];
}
//# sourceMappingURL=DataFrame.d.ts.map