diff --git a/babel.config.js b/babel.config.js
index 0862849..36d77e6 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -3,6 +3,7 @@ module.exports = {
         [
             '@babel/preset-env',
             {
+                useBuiltIns: 'usage',
                 modules: false,
                 targets: {
                     browsers: require('./package.json').browserslist
@@ -24,15 +25,4 @@ module.exports = {
         ]
     ],
     comments: false,
-    env: {
-        test: {
-            presets: [
-                'env',
-                // 'stage-2'
-            ],
-            plugins: [
-                'istanbul'
-            ]
-        }
-    }
 }
diff --git a/html.tpl.html b/html.tpl.html
index 0deaf2d..ce18d8c 100644
--- a/html.tpl.html
+++ b/html.tpl.html
@@ -7,17 +7,12 @@
     <meta name="description" content="<%= htmlWebpackPlugin.options.appConfig.description %>">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <title></title>
-    <link rel="shortcut icon" href="img/favorites.png">
-    <!--<link rel="icon" sizes="any" mask href="img/favorites.png">-->
     <script>
         (function () {
             var ieInf = navigator.userAgent.match(/msie\s*(\d+)/i);
             if (!ieInf) ieInf = navigator.userAgent.match(/Trident.+rv:(\d+)/i);
             if (ieInf) {
-                if (parseInt(ieInf[1]) >= 10) {
-                    document.write('<script src="js/es6-promise.auto.min.js"></sc' + 'ript>')
-                }
-                else {
+                if (parseInt(ieInf[1]) < 10) {
                     document.write(
                         '<div style="background:#FFFCCF;text-align: center;line-height: 30px">'
                         + '您的浏览器版本太低，功能无法使用。请升级到IE10以上，或使用Chrome、Firefox等现代浏览器~'
diff --git a/src/pages/iconfontPreview/template.html b/src/pages/iconfontPreview/template.html
index 64b8aa5..9696dc3 100644
--- a/src/pages/iconfontPreview/template.html
+++ b/src/pages/iconfontPreview/template.html
@@ -7,17 +7,12 @@
     <meta name="description" content="<%= htmlWebpackPlugin.options.appConfig.description %>">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <title></title>
-    <link rel="shortcut icon" href="img/favorites.png">
-    <!--<link rel="icon" sizes="any" mask href="img/favorites.png">-->
     <script>
         (function () {
             var ieInf = navigator.userAgent.match(/msie\s*(\d+)/i);
             if (!ieInf) ieInf = navigator.userAgent.match(/Trident.+rv:(\d+)/i);
             if (ieInf) {
-                if (parseInt(ieInf[1]) >= 10) {
-                    document.write('<script src="js/es6-promise.auto.min.js"></sc' + 'ript>')
-                }
-                else {
+                if (parseInt(ieInf[1]) > 10) {
                     document.write(
                         '<div style="background:#FFFCCF;text-align: center;line-height: 30px">'
                         + '您的浏览器版本太低，功能无法使用。请升级到IE10以上，或使用Chrome、Firefox等现代浏览器~'
diff --git a/static/js/es6-promise.auto.min.js b/static/js/es6-promise.auto.min.js
deleted file mode 100644
index ba34fa7..0000000
--- a/static/js/es6-promise.auto.min.js
+++ /dev/null
@@ -1 +0,0 @@
-!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.ES6Promise=e()}(this,function(){"use strict";function t(t){var e=typeof t;return null!==t&&("object"===e||"function"===e)}function e(t){return"function"==typeof t}function n(t){I=t}function r(t){J=t}function o(){return function(){return process.nextTick(a)}}function i(){return"undefined"!=typeof H?function(){H(a)}:c()}function s(){var t=0,e=new V(a),n=document.createTextNode("");return e.observe(n,{characterData:!0}),function(){n.data=t=++t%2}}function u(){var t=new MessageChannel;return t.port1.onmessage=a,function(){return t.port2.postMessage(0)}}function c(){var t=setTimeout;return function(){return t(a,1)}}function a(){for(var t=0;t<G;t+=2){var e=$[t],n=$[t+1];e(n),$[t]=void 0,$[t+1]=void 0}G=0}function f(){try{var t=require,e=t("vertx");return H=e.runOnLoop||e.runOnContext,i()}catch(n){return c()}}function l(t,e){var n=arguments,r=this,o=new this.constructor(p);void 0===o[et]&&k(o);var i=r._state;return i?!function(){var t=n[i-1];J(function(){return x(i,o,t,r._result)})}():E(r,o,t,e),o}function h(t){var e=this;if(t&&"object"==typeof t&&t.constructor===e)return t;var n=new e(p);return g(n,t),n}function p(){}function v(){return new TypeError("You cannot resolve a promise with itself")}function d(){return new TypeError("A promises callback cannot return that same promise.")}function _(t){try{return t.then}catch(e){return it.error=e,it}}function y(t,e,n,r){try{t.call(e,n,r)}catch(o){return o}}function m(t,e,n){J(function(t){var r=!1,o=y(n,e,function(n){r||(r=!0,e!==n?g(t,n):S(t,n))},function(e){r||(r=!0,j(t,e))},"Settle: "+(t._label||" unknown promise"));!r&&o&&(r=!0,j(t,o))},t)}function b(t,e){e._state===rt?S(t,e._result):e._state===ot?j(t,e._result):E(e,void 0,function(e){return g(t,e)},function(e){return j(t,e)})}function w(t,n,r){n.constructor===t.constructor&&r===l&&n.constructor.resolve===h?b(t,n):r===it?(j(t,it.error),it.error=null):void 0===r?S(t,n):e(r)?m(t,n,r):S(t,n)}function g(e,n){e===n?j(e,v()):t(n)?w(e,n,_(n)):S(e,n)}function A(t){t._onerror&&t._onerror(t._result),T(t)}function S(t,e){t._state===nt&&(t._result=e,t._state=rt,0!==t._subscribers.length&&J(T,t))}function j(t,e){t._state===nt&&(t._state=ot,t._result=e,J(A,t))}function E(t,e,n,r){var o=t._subscribers,i=o.length;t._onerror=null,o[i]=e,o[i+rt]=n,o[i+ot]=r,0===i&&t._state&&J(T,t)}function T(t){var e=t._subscribers,n=t._state;if(0!==e.length){for(var r=void 0,o=void 0,i=t._result,s=0;s<e.length;s+=3)r=e[s],o=e[s+n],r?x(n,r,o,i):o(i);t._subscribers.length=0}}function M(){this.error=null}function P(t,e){try{return t(e)}catch(n){return st.error=n,st}}function x(t,n,r,o){var i=e(r),s=void 0,u=void 0,c=void 0,a=void 0;if(i){if(s=P(r,o),s===st?(a=!0,u=s.error,s.error=null):c=!0,n===s)return void j(n,d())}else 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\ No newline at end of file