async getFile(url) {
      const res = await fetch(url);
      if (!res.ok)
        throw Object.assign(new Error(url + " " + res.statusText), { res });
      let content = await res.text();
      content = url.endsWith("/tools.js")
        ? { content: content, type: ".mjs" } // `type` since v0.7.0 and `extname` before
        : content;
      return content;
    },

const options = {
        moduleCache: {vue: Vue},
        getFile(url) {
            url = /.*?\.js|.mjs|.css|.less|.vue$/.test(url) ? url : `${url}.vue`
            const type = /.*?\.js|.mjs$/.test(url) ? ".mjs" : /.*?\.vue$/.test(url) ? '.vue' : /.*?\.css$/.test(url) ? '.css' : '.vue';
            const getContentData = asBinary => fetch(url).then(res => !res.ok ? Promise.reject(url) : asBinary ? res.arrayBuffer() : res.text())
            return {getContentData: getContentData, type: type}
        },
        addStyle(textContent) {
            let styleElement = document.createElement('style');
            document.head.insertBefore(Object.assign(styleElement, {textContent}),
                document.head.getElementsByTagName('style')[0] || null);
        },
        handleModule(type, getContentData, path, options) {
            switch (type) {
                case '.css':
                    return options.addStyle(getContentData(false));
                case '.less':
                    console.error('.......')
            }
        },
        log(type, ...args) {
            console.log(type, ...args);
        }
    };