import { Epoch, SignedBeaconBlock, SignedBlindedBeaconBlock, Slot } from "@lodestar/types";
import { BlockExternalData } from "./block/externalData.js";
import { ProcessBlockOpts } from "./block/types.js";
import { EpochTransitionCacheOpts } from "./cache/epochTransitionCache.js";
import { BeaconStateTransitionMetrics } from "./metrics.js";
import { CachedBeaconStateAllForks } from "./types.js";
export type StateTransitionOpts = BlockExternalData & EpochTransitionCacheOpts & ProcessBlockOpts & {
    verifyStateRoot?: boolean;
    verifyProposer?: boolean;
    verifySignatures?: boolean;
    dontTransferCache?: boolean;
};
export type StateTransitionModules = {
    metrics?: BeaconStateTransitionMetrics | null;
    validatorMonitor?: ValidatorMonitor | null;
};
interface ValidatorMonitor {
    registerValidatorStatuses(currentEpoch: Epoch, inclusionDelays: number[], flags: number[], isActiveCurrEpoch: boolean[], isActivePrevEpoch: boolean[], balances?: number[]): void;
}
/**
 * `state.clone()` invocation source tracked in metrics
 */
export declare enum StateCloneSource {
    stateTransition = "stateTransition",
    processSlots = "processSlots"
}
/**
 * `state.hashTreeRoot()` invocation source tracked in metrics
 */
export declare enum StateHashTreeRootSource {
    stateTransition = "state_transition",
    blockTransition = "block_transition",
    prepareNextSlot = "prepare_next_slot",
    prepareNextEpoch = "prepare_next_epoch",
    regenState = "regen_state",
    computeNewStateRoot = "compute_new_state_root"
}
/**
 * Implementation Note: follows the optimizations in protolambda's eth2fastspec (https://github.com/protolambda/eth2fastspec)
 */
export declare function stateTransition(state: CachedBeaconStateAllForks, signedBlock: SignedBeaconBlock | SignedBlindedBeaconBlock, options?: StateTransitionOpts, { metrics, validatorMonitor }?: StateTransitionModules): CachedBeaconStateAllForks;
/**
 * Like `processSlots` from the spec but additionally handles fork upgrades
 *
 * Implementation Note: follows the optimizations in protolambda's eth2fastspec (https://github.com/protolambda/eth2fastspec)
 */
export declare function processSlots(state: CachedBeaconStateAllForks, slot: Slot, epochTransitionCacheOpts?: EpochTransitionCacheOpts & {
    dontTransferCache?: boolean;
}, { metrics, validatorMonitor }?: StateTransitionModules): CachedBeaconStateAllForks;
export {};
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