/**
 * Canonical mapper between PluginUpdateInfo and CachedUpdateResult.
 *
 * Before v2.11.3 this logic existed in two places — src/workflows/update-check.ts
 * (with Plugin context for sourceId fallback + sha-length inference) and
 * src/ui/hooks/useUpdates.ts (without Plugin context, no length inference) —
 * which caused the cache to be written twice per check with subtly different
 * values, the second write strictly worse than the first.
 *
 * Single source of truth lives here; both call sites import from this module.
 *
 * ## Single-writer rule
 *
 * Only one site should call `cache.mergeUpdateResults` per check run.
 * The workflow class (UpdateChecker.checkAllAndCache) is the canonical writer because
 * it carries Plugin context. UI hooks should NOT re-save the same data.
 * (Phase 4: the batch write merges by plugin — `saveUpdateResults` replace
 * semantics wiped entries for plugins not re-checked in a partial run.)
 */
import type { Plugin, PluginUpdateInfo } from '../core/types/index.js';
import type { CachedUpdateResult } from './types.js';
/**
 * Map a hash string to its named field by length. Used on the load path so
 * cached checksums can be re-attached to the correct field on PluginInfo.
 */
export declare function inferChecksumField(hash: string | undefined): Record<string, string>;
/**
 * Convert a PluginUpdateInfo to a CachedUpdateResult for storage.
 *
 * @param info - The update info to cache.
 * @param plugin - Optional Plugin context. When provided, source/sourceId fall
 *   back to plugin.type / getSourceIdentifier(plugin) for stronger identity.
 *   Workflow callers (UpdateChecker) always pass this; UI callers can omit it.
 */
export declare function toCachedResult(info: PluginUpdateInfo, plugin?: Plugin): CachedUpdateResult;
/**
 * Convert a CachedUpdateResult back to a PluginUpdateInfo on the load path.
 * Uses {@link inferChecksumField} to attach the cached checksum to the right
 * named field.
 */
export declare function fromCachedResult(pluginName: string, cached: CachedUpdateResult): PluginUpdateInfo;
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