import { ChainTypeName } from "../constants/interopAddress.js";
/**
 * Validates that a chain type is a supported CAIP profile.
 *
 * @param chainType - The chain type to validate (e.g., "eip155", "solana")
 * @returns true if the chain type is a supported CAIP profile, false otherwise
 */
export declare const isValidChainType: (chainType: string) => chainType is ChainTypeName;
/**
 * Validates a chain identifier for a given chain type.
 *
 * For EIP-155, validates that the chain reference is a positive numeric chain ID.
 * For Solana, validates that the chain reference is a valid base58-encoded string.
 *
 * @param chainType - The chain type (e.g., "eip155", "solana")
 * @param chainReference - The chain reference to validate
 * @returns true if the chain identifier is structurally valid, false otherwise
 */
export declare const isValidChain: (chainType: ChainTypeName, chainReference: string) => boolean;
/**
 * Checks whether a given EVM chain ID corresponds to a chain known to `viem/chains`.
 * This is used for ENS resolution, where we only use chain-specific coin types for
 * known chains and otherwise fall back to mainnet.
 */
export declare const isViemChainId: (chainId: number) => boolean;
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