/**
 * Prototype normalization utilities for ProtoPedia API responses.
 *
 * @module fetcher/utils/normalize-prototype
 */
import type { NormalizedPrototype } from '../../types/index.js';
import type { UpstreamPrototype } from '../types/prototype-api.types.js';
/**
 * Transform an upstream prototype object into the normalized shape.
 *
 * This function maps all fields from {@link UpstreamPrototype} to
 * {@link NormalizedPrototype}, applying the following transformations:
 *
 * **Pipe-separated fields** (split into trimmed arrays):
 * - tags, awards, events, materials
 * - Uses {@link splitPipeSeparatedString}
 * - Empty segments filtered out
 * - null/undefined → empty array
 *
 * **Users field** (`users`):
 * - Uses {@link splitPipeSeparatedUsers} (not the plain pipe splitter)
 * - Each username is `displayName@profileId`, and a `displayName` may contain an
 *   un-escaped `|`; the `@`-aware split keeps such a username whole (issue #112)
 * - **Not trimmed** — whitespace is part of the display name
 * - null/undefined → empty array
 *
 * **Timestamp fields** (normalized to UTC ISO strings):
 * - createDate, updateDate: ProtoPedia JST format → UTC
 * - releaseDate: ProtoPedia JST format → UTC, null/undefined → undefined
 * - Uses {@link normalizeProtoPediaTimestamp}
 * - Fallback to original string if parsing fails
 *
 * **Optional fields** (default values when null/undefined):
 * - releaseFlg: 2 (Released)
 * - revision: 0
 * - licenseType: 1
 * - thanksFlg: 0
 * - String fields (summary, freeComment, etc.): ''
 *
 * **Other fields**: Copied as-is
 *
 * @param prototype - The raw prototype object from the ProtoPedia API.
 * @returns A {@link NormalizedPrototype} instance with all fields normalized.
 *
 * @example
 * ```ts
 * const upstream: UpstreamPrototype = {
 *   id: 123,
 *   prototypeNm: 'My Project',
 *   tags: 'IoT | AI | Robotics',
 *   users: 'user1@id1|user2@id2',
 *   createDate: '2024-01-01 12:00:00.0',
 *   // ...other fields
 * };
 *
 * const normalized = normalizePrototype(upstream);
 * // normalized.tags => ['IoT', 'AI', 'Robotics']
 * // normalized.users => ['user1@id1', 'user2@id2']
 * // normalized.createDate => '2024-01-01T03:00:00.000Z' (JST → UTC)
 * ```
 */
export declare function normalizePrototype(p: UpstreamPrototype): NormalizedPrototype;
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