import { type MarkerKind } from '@mdgate/document';
/** One piece of a level's number text. */
export type NumberText = {
    type: 'literal';
    text: string;
} | {
    type: 'level';
    level: number;
};
/** A level's resolved number pattern. */
export interface NumberPattern {
    text: NumberText[];
    legal: boolean;
}
export declare function emptyNumberPattern(): NumberPattern;
/** Parse WordprocessingML-style percent patterns (`%1`–`%9`). */
export declare function parsePercentPattern(text: string): NumberText[];
/**
 * Render a pattern against the current sequence values. `undefined` when the
 * result matches the default label produced from the own level's marker and value.
 */
export declare function compositeLabel(pattern: NumberPattern, ownMarker: MarkerKind, ownValue: number, levelMarker: (level: number) => MarkerKind, levelValue: (level: number) => number): string | undefined;