type TaxonomyRecord = {
    category?: string;
    stack?: string;
    stacks?: string[];
};
/**
 * Return a project's primary and supporting stacks once, in display order.
 *
 * `stack` is the canonical browse dimension while `stacks` can repeat it
 * for compatibility with older records. UI and view-model consumers should
 * use this helper instead of concatenating both fields directly.
 */
export declare function projectStackIds(project?: Pick<TaxonomyRecord, "stack" | "stacks"> | null): string[];
/** Number of items in the directory, per category name. */
export declare function countByCategory(items?: TaxonomyRecord[]): Map<string, number>;
/** Number of items in the directory, per primary stack. */
export declare function countByStack(items?: TaxonomyRecord[]): Map<string, number>;
export {};
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