import { type Address, type Client, type Hex } from "viem";
import type { SetterRatifierRatifyRootAction, Transaction } from "../../../types/index.js";
/** Parameters for {@link getSetterRatifierRatifyRootRequirement}. */
export interface GetSetterRatifierRatifyRootRequirementParams {
    readonly viemClient: Client;
    readonly chainId: number;
    readonly maker: Address;
    readonly root: Hex;
}
/**
 * Resolves the SetterRatifier root approval transaction for a maker offer tree.
 *
 * Call after building a Setter-ratified tree and before encoding/submitting its
 * payload. Entity make-offer flows call this from `getRequirements()` and omit
 * the transaction when the maker has already approved the root.
 *
 * @param params.viemClient - Viem client used to read root approval state.
 * @param params.chainId - Chain id expected by the viem client.
 * @param params.maker - Maker whose root approval is checked.
 * @param params.root - Offer-tree root that must be approved.
 * @returns Ratify-root transaction, or `null` when the root is already ratified.
 * @throws {ChainIdMismatchError} when the viem client is connected to another chain.
 * @example
 * ```ts
 * import { getSetterRatifierRatifyRootRequirement } from "@morpho-org/morpho-sdk";
 *
 * const tx = await getSetterRatifierRatifyRootRequirement({
 *   viemClient: client,
 *   chainId: 8453,
 *   maker: user,
 *   root,
 * });
 * if (tx) {
 *   await walletClient.sendTransaction({
 *     to: tx.to,
 *     data: tx.data,
 *     value: tx.value,
 *   });
 * }
 * ```
 */
export declare const getSetterRatifierRatifyRootRequirement: (params: GetSetterRatifierRatifyRootRequirementParams) => Promise<Readonly<Transaction<SetterRatifierRatifyRootAction>> | null>;