import type { Plugin } from 'unified';
import type { GenericParent } from 'myst-common';
import type { IReferenceStateResolver, ReferenceState } from './enumerate.js';
import type { VFile } from 'vfile';
/** Changes é to E etc. */
export declare function getNormalizedFirstLetter(entry: string): string;
/**
 * Ensure all nodes with index entries have label/identifier/html_id
 */
export declare function indexIdentifierTransform(mdast: GenericParent): void;
export declare const indexIdentifierPlugin: Plugin<[], GenericParent, GenericParent>;
export declare function buildIndexTransform(mdast: GenericParent, vfile: VFile, state: ReferenceState, stateResolver: IReferenceStateResolver): void;
//# sourceMappingURL=indices.d.ts.map