/**
 * @fileoverview The post-publication update links a work record carries — `updated-by` (the
 * notices issued against it) and `update-to` (the works it is itself a notice for) — as one pair
 * of output fields, one projection, and one Markdown list per field. Both crossref_get_work and
 * crossref_search_works return them, and sharing the pieces is what keeps the two tools naming,
 * describing, and rendering an update entry identically.
 * @module mcp-server/tools/work-updates
 */
import { z } from '@cyanheads/mcp-ts-core';
import type { RawCrossrefWork } from '../../services/crossref/types.js';
declare const UpdateSchema: z.ZodObject<{
    doi: z.ZodString;
    type: z.ZodString;
    source: z.ZodString;
    recordId: z.ZodOptional<z.ZodString>;
    updated: z.ZodOptional<z.ZodObject<{
        year: z.ZodOptional<z.ZodNumber>;
        month: z.ZodOptional<z.ZodNumber>;
        day: z.ZodOptional<z.ZodNumber>;
    }, z.core.$strip>>;
}, z.core.$strip>;
/** One update link as both tools return it. */
export type Update = z.infer<typeof UpdateSchema>;
/** The update output fields, spread into a work's output schema. */
export declare const updateFields: {
    updatedBy: z.ZodOptional<z.ZodArray<z.ZodObject<{
        doi: z.ZodString;
        type: z.ZodString;
        source: z.ZodString;
        recordId: z.ZodOptional<z.ZodString>;
        updated: z.ZodOptional<z.ZodObject<{
            year: z.ZodOptional<z.ZodNumber>;
            month: z.ZodOptional<z.ZodNumber>;
            day: z.ZodOptional<z.ZodNumber>;
        }, z.core.$strip>>;
    }, z.core.$strip>>>;
    updateTo: z.ZodOptional<z.ZodArray<z.ZodObject<{
        doi: z.ZodString;
        type: z.ZodString;
        source: z.ZodString;
        recordId: z.ZodOptional<z.ZodString>;
        updated: z.ZodOptional<z.ZodObject<{
            year: z.ZodOptional<z.ZodNumber>;
            month: z.ZodOptional<z.ZodNumber>;
            day: z.ZodOptional<z.ZodNumber>;
        }, z.core.$strip>>;
    }, z.core.$strip>>>;
};
/**
 * Each update list the record deposits, every entry in deposited order. A list deposited as `[]`
 * is no update at all and is omitted, like one never deposited.
 */
export declare function projectUpdates(raw: Pick<RawCrossrefWork, 'updated-by' | 'update-to'>): {
    updatedBy?: Update[];
    updateTo?: Update[];
};
/** The labelled Markdown list for each update field the work carries, `updatedBy` first. */
export declare function updateSections(w: {
    updatedBy?: Update[] | undefined;
    updateTo?: Update[] | undefined;
}): string[][];
export {};
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