import { AllowanceKey, TokenAllowance } from "@gala-chain/api";
import BigNumber from "bignumber.js";
import { GalaChainContext } from "../types";
export interface AllowanceType {
    allowanceKey: AllowanceKey;
    uses: BigNumber;
    expires: number;
}
/**
 * @description
 *
 * Lookup existing `TokenAllowance` entries by composite key, and set the
 * expires timestamp and the uses property to new values.
 *
 * Used for extending the duration of existing allowances. Can also be used to
 * revoke existing allowances by setting uses to 0 or expires to a valid
 * non-zero timestamp in the past.
 *
 * @param ctx
 * @param allowances
 * @returns Promise<TokenAllowance[]>
 */
export declare function refreshAllowances(ctx: GalaChainContext, allowances: AllowanceType[]): Promise<TokenAllowance[]>;
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