import { $ } from '../../../../../Class/$';
import { Done } from '../../../../../Class/Functional/Done';
import { Fail } from '../../../../../Class/Functional/Fail';
import { Holder } from '../../../../../Class/Holder';
import { System } from '../../../../../system';
import { AB } from '../../../../../types/interface/AB';
import { CK } from '../../../../../types/interface/CK';
export type I = {
    key: CK & $;
    format: Exclude<KeyFormat, 'jwk'>;
};
export type O = {
    key: AB;
};
export default class ExportKey extends Holder<I, O> {
    constructor(system: System);
    f({ key, format }: I, done: Done<O>, fail: Fail): Promise<void>;
}
