/** Matches FortuneSheet canvas `defaultFontSize` for unformatted cells. */
export declare const DEFAULT_SPREADSHEET_FONT_SIZE = 11;
export declare const spreadsheetFontSizes: readonly [9, 10, 11, 12, 14, 16, 18, 20, 22, 24, 28, 36, 48, 72];
export type SpreadsheetFontSizeDirection = 'grow' | 'shrink';
export declare function nextSpreadsheetFontSize(current: number, direction: SpreadsheetFontSizeDirection): number | null;