/**
 * Ledger operation error class for the BrightChain blockchain ledger.
 *
 * Thrown when ledger operations fail, such as:
 * - Entry not found (invalid sequenceNumber)
 * - Invalid range (start > end or out of bounds)
 * - Metadata block corrupted during load
 * - Append operation failure
 *
 * @see Requirements 2.7, 6.3
 */
export declare enum LedgerErrorType {
    EntryNotFound = "EntryNotFound",
    InvalidRange = "InvalidRange",
    MetadataCorrupted = "MetadataCorrupted",
    AppendFailed = "AppendFailed",
    UnauthorizedSigner = "UnauthorizedSigner",
    UnauthorizedGovernance = "UnauthorizedGovernance",
    QuorumNotMet = "QuorumNotMet",
    GovernanceSafetyViolation = "GovernanceSafetyViolation",
    InvalidStateTransition = "InvalidStateTransition",
    InvalidGovernanceTarget = "InvalidGovernanceTarget",
    MerkleProofFailed = "MerkleProofFailed",
    ConsistencyProofFailed = "ConsistencyProofFailed",
    MerkleReconstructionFailed = "MerkleReconstructionFailed"
}
export declare class LedgerError extends Error {
    readonly errorType: LedgerErrorType;
    constructor(errorType: LedgerErrorType, message?: string);
}
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