import type ts from 'typescript/lib/tsserverlibrary';
export type LanguageServiceMethodWrapper<K extends keyof ts.LanguageService> = (delegate: ts.LanguageService[K], info?: {
    languageService: ts.LanguageService;
}) => ts.LanguageService[K];
export declare class LanguageServiceProxyBuilder {
    private _info;
    private _wrappers;
    constructor(_info: {
        languageService: ts.LanguageService;
    });
    wrap<K extends keyof ts.LanguageService, Q extends LanguageServiceMethodWrapper<K>>(name: K, wrapper: Q): this;
    build(): ts.LanguageService;
}