import { ChannelConstants, Hashed, SignedStateVarsWithHash, State, SignedState, SignedStateWithHash } from '@statechannels/wallet-core';
import { SignedState as WireSignedState } from '@statechannels/wire-format';
import { Bytes32 } from './type-aliases';
import { Channel } from './models/channel';
export declare const dropNonVariables: (s: SignedStateVarsWithHash) => SignedStateVarsWithHash;
export declare const dropNonConstants: (s: State) => ChannelConstants;
export declare const addHash: <T extends State = State>(s: T) => T & Hashed;
export declare const addHashes: (c: Channel) => Channel;
export declare const addChannelId: <T extends ChannelConstants = ChannelConstants>(c: T) => T & {
    channelId: Bytes32;
};
/**
 * Fold a new signed state into an existing list of signed states (variable parts only).
 *
 * @param vars - list of signed states
 * @param signedState - new signed state
 *
 * A signed state _may_ be a new signature on an existing signed state, in which case
 * we want to "fold" it in by adding a signature to the existing signed state object.
 *
 * In the other case, it represents a brand new state, so we simply push it to the end
 * of the list of existing signed states.
 */
export declare function addState(vars: SignedStateVarsWithHash[], signedState: SignedStateWithHash): SignedStateVarsWithHash[];
/**
 * Retrieve a list of states that must be stored to ensure future secure protocol execution.
 *
 * @param signedStates - list of signed states of arbitrary length
 * @param support - a support (list of signed states)
 *
 * Should remove states in signedStates which are not a part of the support.
 */
export declare function clearOldStates(signedStates: SignedStateVarsWithHash[], support: SignedStateWithHash[] | undefined): SignedStateVarsWithHash[];
/**
 *
 * @param channelId Bytes32 representation of a channel id
 * @param state a serialized WireSignedState
 * @returns SignedState with signatures verified
 *
 * Deserializes a state but uses the wasm utility method local to the server-wallet
 * package. This, as opposed to the JS implementation inside wallet-core.
 *
 * Throws if any recovered signers are not a participant.
 */
export declare function fastDeserializeState(channelId: Bytes32, state: WireSignedState): SignedState;
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