/**
 * Custom error class for errors related to the bridging functionality.
 */
export declare class BridgerError extends Error {
    constructor(message: string);
}
/**
 * Custom error class for handling gas estimation errors.
 */
export declare class GasEstimationError extends Error {
    constructor(message: string);
}
/**
 * Custom error class for errors related to unsupported networks.
 */
export declare class UnsupportedNetworkError extends BridgerError {
    constructor(chainId: number);
}
/**
 * Custom error class for errors related to missing provider information.
 */
export declare class MissingProviderError extends BridgerError {
    constructor();
}
/**
 * Custom error class for errors related to failed transactions.
 */
export declare class TransactionError extends BridgerError {
    constructor(message: string, transactionHash?: string);
}