/** Thrown when a string is not valid hexadecimal. */
export declare class InvalidHexError extends Error {
    constructor(message: string);
}
/** Thrown when an input string cannot be recognized as any supported wallet format. */
export declare class UnrecognizedFormatError extends Error {
    constructor(message: string);
}
/** Thrown when {@link importWallet} receives invalid parameters. */
export declare class InvalidWalletParamsError extends Error {
    constructor(message: string);
}
/** Thrown when {@link deserializeWallet} receives invalid data. */
export declare class InvalidWalletExportError extends Error {
    constructor(message: string);
}
/** Thrown when an operation is not supported for the given context (e.g. wrong wallet type, accessing token-only data on a native coin). */
export declare class UnsupportedOperationError extends Error {
    constructor(message: string);
}
/** Thrown when a transaction fails to broadcast. */
export declare class BroadcastError extends Error {
    constructor(message: string);
}
/** Thrown when a transaction has already been sent and cannot be modified. */
export declare class TransactionAlreadySentError extends Error {
    constructor();
}
/** Thrown when the wallet does not have enough funds to cover the transfer amount plus fees. */
export declare class NotEnoughFundsError extends Error {
    constructor();
}
/**
 * Thrown when the keyless rate limit is exhausted (HTTP 429).
 *
 * ChainGate works without an API key for light usage. To raise the quota,
 * grab a free API key at {@link https://api.chaingate.dev} and pass it as
 * `new ChainGate({ apiKey })`.
 */
export declare class RateLimitError extends Error {
    constructor();
}
/**
 * Thrown when the API returns 429 Too Many Requests while using an API key.
 *
 * Upgrade your plan at {@link https://api.chaingate.dev} for a higher rate limit.
 */
export declare class RateLimitQuotaError extends Error {
    constructor();
}
/** Thrown when a keystore password is incorrect. */
export declare class IncorrectKeystorePasswordError extends Error {
    constructor();
}
/** Thrown when a keystore has an invalid or unrecognized format. */
export declare class InvalidKeystoreError extends Error {
    constructor(message: string);
}
/** Thrown when a JSON-RPC call to an EVM node fails. */
export declare class RpcError extends Error {
    /** JSON-RPC error code, if provided by the node. */
    readonly code?: number;
    constructor(message: string, code?: number);
}