/**
 * LombokTableSheet — core data model.
 * Deliberately dependency-free and free of JS-only tricks so it can be
 * mechanically ported to PHP / Go / Rust later (see ARCHITECTURE.md §2.2).
 */
export type CellValue = string | number | boolean | null;
export type CellType = 'string' | 'number' | 'boolean' | 'date' | 'formula' | 'empty';
export interface Cell {
    value: CellValue;
    formula?: string;
    type: CellType;
    styleRef?: string;
}
export interface CellRef {
    row: number;
    col: number;
}
export interface Merge {
    from: CellRef;
    to: CellRef;
}
export type ColumnType = 'string' | 'number' | 'boolean' | 'date';
export declare class Sheet {
    name: string;
    rowCount: number;
    colCount: number;
    merges: Merge[];
    colTypes: Record<number, ColumnType>;
    private cells;
    constructor(name: string, rowCount?: number, colCount?: number);
    private key;
    getCell(row: number, col: number): Cell;
    setCell(row: number, col: number, cell: Cell): void;
    setValue(row: number, col: number, value: CellValue): void;
    /** Explicitly set rowCount/colCount, including shrinking them. Used by the
     *  transaction layer to restore exact prior dimensions on undo — normal
     *  editing should never need this, since setCell only ever grows the sheet. */
    resize(rowCount: number, colCount: number): void;
    iterCells(): IterableIterator<[CellRef, Cell]>;
    toRows(): CellValue[][];
    clone(): Sheet;
}
export interface StyleTable {
    [ref: string]: Record<string, string>;
}
export declare class Workbook {
    sheets: Sheet[];
    styles: StyleTable;
    locale: string;
    meta: {
        createdWith: string;
        version: string;
    };
    constructor(locale?: string);
    addSheet(sheet: Sheet): void;
    sheet(name: string): Sheet | undefined;
    static fromRows(rows: CellValue[][], sheetName?: string, locale?: string): Workbook;
}