import { UnsignedTransaction } from "@ethersproject/transactions";
import { GasEstimateContext, GasEstimateErrorCategory, TxExecutionDiagnostics } from "../types";
export declare class TxExecutionDiagnosticsError extends Error {
    readonly diagnostics: TxExecutionDiagnostics;
    constructor(message: string, diagnostics: TxExecutionDiagnostics);
}
export declare function getTxExecutionDiagnostics(error: unknown): TxExecutionDiagnostics | undefined;
export declare function withTxExecutionDiagnostics(error: unknown, diagnostics: TxExecutionDiagnostics): TxExecutionDiagnosticsError;
export declare function createGasEstimateDiagnostics(error: unknown, context: GasEstimateContext, tx?: Pick<UnsignedTransaction, "value"> & {
    requiredErc20Approvals?: unknown[];
}): TxExecutionDiagnostics;
export declare function classifyGasEstimateError(error: unknown): GasEstimateErrorCategory;
export declare function hasEvmTxNativeValue(value: unknown): boolean;
export declare function sanitizeTxExecutionDiagnostics(diagnostics: unknown): TxExecutionDiagnostics | undefined;