import { type AnchorId, type ImageSource, type LinkTarget } from './link.js';
import { type Style } from './style.js';
/** One span of inline content. */
export type Inline = {
    type: 'text';
    text: string;
    style: Style;
} | {
    type: 'link';
    content: Inline[];
    target: LinkTarget;
} | {
    type: 'image';
    alt: string;
    source: ImageSource;
} | {
    type: 'anchor';
    id: AnchorId;
} | {
    type: 'noteRef';
    id: string;
} | {
    type: 'lineBreak';
};
/** Unstyled text. */
export declare function plain(text: string): Inline;
/**
 * Flatten inlines to their text, dropping styling and links but keeping link
 * text and image alt text. Line breaks become newlines; anchors and note
 * references contribute nothing.
 */
export declare function inlinesToPlainText(inlines: readonly Inline[]): string;
/**
 * True when nothing here would render as visible content: only whitespace,
 * empty-target links, anchors, and line breaks. An image or a note reference
 * always counts as content.
 */
export declare function inlinesAreEmpty(inlines: readonly Inline[]): boolean;