import { MarkExtension } from "../../MarkExtension";
export default class Underline extends MarkExtension {
    priority: number;
    get name(): string;
    get schema(): any;
    keys({ type }: {
        type: any;
    }): {
        "Mod-u": any;
    };
    commands({ type }: {
        type: any;
    }): () => any;
}