__importScript = (filename) => {
        pleaseLetJsLoaded = 100;
        let url = filename;

        if (location.protocol === 'chrome-extension:' || chrome.runtime && chrome.runtime.getURL) {
            url = chrome.runtime.getURL('json-format/' + filename);
        }
        fetch(url).then(resp => resp.text()).then(jsText => {
            if(window.evalCore && window.evalCore.getEvalInstance){
                return window.evalCore.getEvalInstance(window)(jsText);
            }
            let el = document.createElement('script');
            el.textContent = jsText;
            document.head.appendChild(el);
        });
    }
Json Page Automatic Format Via FeHelper
@author zhaoxianlie