import type { SignatureData, SpanData } from '../interfaces/protocol';
export declare class SignatureTip {
    #private;
    constructor(cm: CodeMirror.Editor);
    update({ signatures, span }: {
        signatures: ReadonlyArray<SignatureData>;
        span: SpanData;
    } | {
        signatures?: undefined;
        span?: undefined;
    }): void;
    hide(): void;
}