import type { ProviderAPI as EvmProviderApi } from '@hub3js/evm';
import type { InstanceMap } from '@hub3js/std/types';
import { EVM_NAMESPACE } from '@hub3js/namespaces';
export type ProviderObject = {
    [EVM_NAMESPACE]: EvmProviderApi;
};
export type Provider = InstanceMap<ProviderObject>;
export declare function safepal(): Provider | null;
export declare function evmSafepal(): EvmProviderApi;
export declare function getInstanceOrThrow(): Provider;
/**
 * Return true if address is a valid EVM address.
 * Accepts:
 *  - all-lowercase or all-uppercase 0x-prefixed hex (non-checksummed - allowed)
 *  - checksummed (mixed-case according to EIP-55)
 */
export declare function isValidEvmAddress(address: string): boolean;
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