import { Context, Crypto, LDLogger, Storage } from '@launchdarkly/js-sdk-common';
import { Flags } from '../types';
/**
 * Result of loading cached flags from storage.
 */
export interface CachedFlagData {
    /** The parsed flag data. */
    flags: Flags;
    /** The storage key where the flags were found (or should be stored). */
    storageKey: string;
    /** Whether the flags were found at the legacy canonical key location. */
    fromLegacyKey: boolean;
}
/**
 * Loads cached flag data from storage for the given context.
 *
 * Checks the current storage key first, then falls back to the legacy
 * canonical key location (pre-10.3.1). Does NOT perform migration — the
 * caller is responsible for migrating data if {@link CachedFlagData.fromLegacyKey}
 * is true.
 *
 * @returns The cached flag data, or `undefined` on cache miss or parse error.
 */
export declare function loadCachedFlags(storage: Storage, crypto: Crypto, environmentNamespace: string, context: Context, logger?: LDLogger): Promise<CachedFlagData | undefined>;
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