add

options.html

@@ -193,6 +193,7 @@
             <button id='babel_aline'>将代码变成一行，不压缩[babel]</button>
             <button id='uglify'>仅变量压缩[uglify-es]</button>
             <button id='uglify_mini'>完全压缩脚本[uglify-es]</button>
+            <button id='terser'>仅变量压缩[terser]</button>
             <button id='terser_mini'>完全压缩脚本[terser]</button>
             <button id='open_diff_text'>打开文本对比工具</button>
             <label id='env' style="color: #FFEEEE">cilame</label>

tools/btn_utils.js

@@ -7,6 +7,7 @@ var jsfuckbtn = document.getElementById('jsfuck')
 var obnormalbtn = document.getElementById('obnormal')
 var babel_aline = document.getElementById('babel_aline')
 var uglifybtn = document.getElementById('uglify')
+var terserbtn = document.getElementById('terser')
 var uglify_minibtn = document.getElementById('uglify_mini')
 var terser_minibtn = document.getElementById('terser_mini')
 var txt = document.getElementById('txt')
@@ -128,6 +129,18 @@ uglify_minibtn.addEventListener('click', function(e){
   ;(txt2||txt).value = r.code?r.code:r.error;
 })
 
+terserbtn.addEventListener('click', function(e){
+  terser.charlist = '0123456789'
+  terser.prefix = 'vvv_'
+  terser.tail = '_'
+  terser.minify(txt.value, {compress:false,output:{beautify:true}}).then(function(e){
+    terser.charlist = undefined
+    terser.prefix = undefined
+    terser.tail = undefined
+    ;(txt2||txt).value = e.code?e.code:e.error;
+  })
+})
+
 terser_minibtn.addEventListener('click', function(e){
   terser.minify(txt.value).then(function(e){
     ;(txt2||txt).value = e.code?e.code:e.error;