import type { Color } from '../styles/colors';
/** Underline styles per openpyxl's cell-level NestedNoneSet. */
export type InlineUnderline = 'single' | 'double' | 'singleAccounting' | 'doubleAccounting';
export type InlineVertAlign = 'baseline' | 'superscript' | 'subscript';
export interface InlineFont {
    readonly name?: string;
    readonly sz?: number;
    readonly b?: boolean;
    readonly i?: boolean;
    readonly u?: InlineUnderline;
    readonly strike?: boolean;
    readonly outline?: boolean;
    readonly shadow?: boolean;
    readonly condense?: boolean;
    readonly extend?: boolean;
    readonly vertAlign?: InlineVertAlign;
    readonly color?: Color;
    readonly family?: number;
    readonly charset?: number;
    readonly scheme?: 'major' | 'minor';
}
export interface TextRun {
    readonly text: string;
    readonly font?: InlineFont;
}
/** A frozen array of TextRuns. The shared cell value shape under `kind: 'rich-text'`. */
export type RichText = ReadonlyArray<TextRun>;
export declare function makeTextRun(text: string, font?: InlineFont): TextRun;
export declare function makeRichText(runs: ReadonlyArray<TextRun | {
    text: string;
    font?: InlineFont;
}>): RichText;
/**
 * Concatenate the plain-text content of a rich-text value (rich-text
 * read paths often want the raw text without formatting).
 */
export declare function richTextToString(rt: RichText): string;