import type { ContentBlock } from './types.js';
/** A `\label{…}` in TeX: the identifier a `\eqref`, `\ref` or `:ref`
 *  names (#530), trimmed; `tex.slice(start, end)` is the whole command. */
export interface TexLabel {
    label: string;
    start: number;
    end: number;
}
/** Every `\label{…}` of a TeX source, in order, as
 *  `/\\label\{\s*([^{}]*?)\s*\}/g` finds them: a braced group holding no
 *  brace. A scan in one pass (the expression backtracks over spaces). */
export declare function texLabelMatches(tex: string): TexLabel[];
/** The labels of a TeX source, in order. */
export declare function texLabels(tex: string): string[];
/**
 * A `\label{eq:x}` in a display formula (#530) is an anchor on the formula:
 * where a reference to it jumps and whose page it prints. The anchor sits
 * on the formula's first source character; the mark's range is the
 * `\label{…}` itself, so a duplicate is reported where it is written.
 */
export declare function attachEquationAnchors<T extends {
    blocks: ContentBlock[];
}>(result: T, markdown: string): T;
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