import { Worksheet } from 'exceljs';

type CellRange = {
    row: [number, number];
    column: [number, number];
    [key: string]: unknown;
};
export type FortuneFormat = {
    textColor?: string;
    cellColor?: string;
    bold?: boolean;
    italic?: boolean;
    underline?: boolean;
    strikethrough?: boolean;
};
type FortuneRule = {
    type: string;
    cellrange: CellRange[];
    format?: FortuneFormat;
    conditionName: string;
    conditionValue?: string[];
};
type Sheet = {
    luckysheet_conditionformat_save?: FortuneRule[];
    [key: string]: unknown;
};
export type PendingDuplicateRule = {
    ref: string;
    format: FortuneFormat;
    priority: number;
    type: 'duplicateValues' | 'uniqueValues';
};
export type CfExportResult = {
    nextPriority: number;
    pendingDuplicateValues: PendingDuplicateRule[];
};
/** Convert any CSS color string to an 8-char ARGB hex (e.g. "FFFF0000"). Returns null if unparseable. */
export declare function colorToArgb(color: string): string | null;
/**
 * Writes all luckysheet_conditionformat_save rules from `sheet` into the
 * ExcelJS worksheet.
 *
 * Returns the next available priority integer and any `duplicateValue` rules
 * that ExcelJS cannot render — those must be injected later via
 * `patchXlsxCf` in the post-processing step.
 */
export declare function exportConditionalFormatting(ws: Worksheet, sheet: Sheet, startPriority: number): CfExportResult;
export {};