import type { ComicBalloonOut, LetteringEnv, LetteringItem, LetteringPanel, LetteringResult } from './types.js';
/** The lettering of one panel: its balloons in reading order. */
export declare function letterPanel(panel: LetteringPanel, items: readonly LetteringItem[], env?: LetteringEnv): ComicBalloonOut[];
/** {@link letterPanel} with the diagnostics of balloons that could not be
 *  placed cleanly (warning `comicBalloonOverflow`). */
export declare function letterPanelDetailed(panel: LetteringPanel, items: readonly LetteringItem[], env?: LetteringEnv): LetteringResult;
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