import type { BlockTracker as BaseBlockTracker } from "@metamask/eth-block-tracker";
import type { InternalProvider } from "@metamask/eth-json-rpc-provider";
import type { MiddlewareContext } from "@metamask/json-rpc-engine/v2";
import type { Hex } from "@metamask/utils";
export type Provider = InternalProvider<MiddlewareContext<{
    origin: string;
    skipCache: boolean;
} & Record<string, unknown>>>;
export type BlockTracker = BaseBlockTracker & {
    checkForLatestBlock(): Promise<string>;
};
/**
 * The type of network client that can be created.
 */
export declare enum NetworkClientType {
    Custom = "custom",
    Infura = "infura"
}
/**
 * A configuration object that can be used to create a client for a network.
 */
type CommonNetworkClientConfiguration = {
    chainId: Hex;
    failoverRpcUrls?: string[];
    ticker: string;
};
/**
 * A configuration object that can be used to create a client for a custom
 * network.
 */
export type CustomNetworkClientConfiguration = CommonNetworkClientConfiguration & {
    rpcUrl: string;
    type: NetworkClientType.Custom;
};
/**
 * A configuration object that can be used to create a client for an Infura
 * network.
 */
export type InfuraNetworkClientConfiguration = CommonNetworkClientConfiguration & {
    network: string;
    infuraProjectId: string;
    type: NetworkClientType.Infura;
};
/**
 * A configuration object that can be used to create a client for a network.
 */
export type NetworkClientConfiguration = CustomNetworkClientConfiguration | InfuraNetworkClientConfiguration;
export {};
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