import { Context, Effect, Layer, Stream } from "effect";
import type { ClientNotFoundError, TransportError } from "../core/index.js";
import { PublicClientService } from "../core/index.js";
import { SubscriptionService } from "../subscriptions/index.js";
export type ChainHeadShape = {
    readonly current: (chainId: number) => Effect.Effect<bigint, ClientNotFoundError | TransportError>;
    readonly watch: (chainId: number) => Effect.Effect<Stream.Stream<bigint, never>, ClientNotFoundError>;
};
declare const ChainHead_base: Context.TagClass<ChainHead, "ew3/ChainHead", ChainHeadShape>;
export declare class ChainHead extends ChainHead_base {
}
export declare const ChainHeadLive: Layer.Layer<ChainHead, never, PublicClientService | SubscriptionService>;
export {};
//# sourceMappingURL=chain-head.d.ts.map