import type { Plugin } from 'vite';
import type { OutputChunk, OutputAsset } from 'rollup';
type LinkAttributes = {
    rel: string;
    as?: string;
    href?: string;
    type?: string;
    crossorigin?: boolean | 'anonymous' | 'use-credentials';
    media?: string;
    imagesrcset?: string;
    imagesizes?: string;
    referrerpolicy?: string;
    [key: string]: string | boolean | undefined;
};
export interface CustomPreloadOptions {
    /**
     * 控制每个 chunk 是否插入及插入属性
     * 返回 true/false 或属性对象
     */
    shouldPreload?: (chunk: OutputChunk | OutputAsset) => boolean | LinkAttributes;
    /**
     * preload 或 prefetch
     */
    rel?: 'preload' | 'prefetch';
    /**
     * link插入到index.html的位置，默认为head
     * 可选值：'head' | 'body'
     */
    position?: 'head' | 'body';
    /**
     * 是否在开发环境也启用插件处理
     */
    applyInDev?: boolean;
}
export default function customPreloadPlugin(options?: CustomPreloadOptions): Plugin;
export {};