declare namespace Chai {
    interface Assertion extends LanguageChains, NumericComparison, TypeComparison {
        emit(eventName: string, contractOrAddress?: any): EmitAssertion;
        call(methodName: string, contractOrAddress?: any): EmitAssertion;
        error(errorCode?: number | null, contractOrAddress?: any): AsyncAssertion;
    }
    interface AsyncAssertion extends Assertion, Promise<void> {
    }
    interface EmitAssertion extends AsyncAssertion {
        withNamedArgs(args: Record<string, unknown>, message?: string): AsyncAssertion;
        count(count: number): EmitAssertion;
    }
}