import { ChainConfig, SpecJson } from "@lodestar/config";
export declare class NotEqualParamsError extends Error {
}
/**
 * Assert localConfig values match externalSpecJson. externalSpecJson may contain more values than localConfig.
 *
 * This check ensures that the validator is connected to a beacon node of the exact same network and params.
 * Otherwise, signatures may be rejected, time may be un-equal and other bugs that are harder to debug caused
 * by different parameters.
 *
 * This check however can't compare the full config as is, since some parameters are not critical to the spec and
 * can be changed un-expectedly. Also, fork parameters can change un-expectedly, like their _FORK_VERSION or _EPOCH.
 * Note that the config API endpoint is not precisely specified, so each clients can return a different set of
 * parameters.
 *
 * So this check only compares a specific list of parameters that are consensus critical, ignoring the rest. Typed
 * config and preset ensure new parameters are labeled critical or ignore, facilitating maintenance of the list.
 */
export declare function assertEqualParams(localConfig: ChainConfig, externalSpecJson: SpecJson): void;
//# sourceMappingURL=params.d.ts.map