import type { ChainReference, EvmChainReference } from './types.js';
export declare function formatCaip2(chainId: number): string;
export declare function chainIdFromCaip2(value: string): number | undefined;
export declare function parseCaip2(value: string): ChainReference;
export declare function toEvmChainReference(chainId: number): EvmChainReference;
export declare function chainIdFromReference(chain: ChainReference): number;
export declare function isCaip2(value: string): boolean;
export declare function isEvmCaip2(value: string): value is `eip155:${number}`;
export declare function isNonEvmChainId(chainId: number): boolean;
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