import "../../_dnt.polyfills.js";
import * as $ from "../../deps/scale.js";
export type Era = {
    type: "Immortal";
} | {
    type: "Mortal";
    period: bigint;
    phase: bigint;
};
export declare namespace Era {
    const Immortal: Era;
    function Mortal(period: bigint, current: bigint): Era;
}
export declare const $era: $.Codec<Era>;