import { ethers } from "ethers";
import { CacheMapType, NegativeLayoutReason, NegativeStorageLayout, StorageLayoutCacheEventType, StorageLayoutCacheOptions, StorageLayoutKind, StoredStorageLayout, VerifiedStorageLayout } from "./types";
export declare const DEFAULT_CACHE_TTL_SECONDS: number;
export declare const DEFAULT_NEGATIVE_CACHE_TTL_SECONDS: number;
export declare const DEFAULT_CACHE_TIMEOUT_MS = 200;
export declare const approvalCache: CacheMapType;
export declare const balanceCache: CacheMapType;
export declare const getStorageLayoutCacheKey: (kind: StorageLayoutKind, chainId: number, tokenAddress: string) => string;
export declare const resolveCacheContext: (provider: ethers.providers.JsonRpcProvider, kind: StorageLayoutKind, tokenAddress: string, options?: StorageLayoutCacheOptions) => Promise<{
    kind: StorageLayoutKind;
    chainId: number;
    tokenAddress: string;
    ttlSeconds: number;
    negativeTtlSeconds: number;
    timeoutMs: number;
    key: string;
}>;
export type StorageLayoutCacheContext = Awaited<ReturnType<typeof resolveCacheContext>>;
export declare const emitCacheEvent: (options: StorageLayoutCacheOptions, context: StorageLayoutCacheContext, type: StorageLayoutCacheEventType, reason?: NegativeLayoutReason) => void;
export declare const isVerifiedStorageLayout: (value: unknown, ttlSeconds: number) => value is VerifiedStorageLayout;
export declare const isNegativeStorageLayout: (value: unknown) => value is NegativeStorageLayout;
export declare const isFreshNegativeStorageLayout: (value: unknown, negativeTtlSeconds: number) => value is NegativeStorageLayout;
export declare const getExternalLayout: (options: StorageLayoutCacheOptions, context: StorageLayoutCacheContext) => Promise<StoredStorageLayout | undefined>;
export declare const setExternalLayout: (options: StorageLayoutCacheOptions, context: StorageLayoutCacheContext, value: StoredStorageLayout, ttlSeconds: number) => Promise<void>;
export declare const getLocalLayout: (cache: CacheMapType, key: string, ttlSeconds: number, negativeTtlSeconds?: number) => StoredStorageLayout | undefined;
export declare const setLocalLayout: (cache: CacheMapType, key: string, value: VerifiedStorageLayout, ttlSeconds: number) => CacheMapType;
export declare const setLocalNegative: (cache: CacheMapType, key: string, value: NegativeStorageLayout, negativeTtlSeconds: number) => CacheMapType;
export declare const runVerifiedDiscovery: (key: string, discover: () => Promise<StoredStorageLayout | undefined>) => Promise<StoredStorageLayout | undefined>;
export declare const getStorageAtLimited: (provider: ethers.providers.JsonRpcProvider, address: string, position: string) => Promise<string>;
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