import type { GenericParent } from 'myst-common';
import type { VFile } from 'vfile';
type Options = {
    /**
     * In many existing JupyterBooks, the first node is a label `(heading)=`
     * The `propagateTargets` option merges the target with the heading
     * so the title can be picked up by the frontmatter.
     */
    propagateTargets?: boolean;
    /**
     * `preFrontmatter` overrides frontmatter from the file. It must be taken
     * into account this early so title is not removed if preFrontmatter.title
     * is defined.
     */
    preFrontmatter?: Record<string, any>;
    /**
     * By default, if the page starts with an H1 heading and has no title in the
     * frontmatter, the heading will become the title and be removed.
     * If `keepTitleNode` is true, the heading will still become the title
     * but the node will not be removed.
     */
    keepTitleNode?: boolean;
};
export declare function getFrontmatter(file: VFile, tree: GenericParent, opts?: Options): {
    tree: GenericParent;
    frontmatter: Record<string, any>;
    identifiers: string[];
};
export {};
//# sourceMappingURL=frontmatter.d.ts.map