Revert "add standard"

This reverts commit 2cdedf9.

example.js

@@ -1,4 +1,5 @@
-const balanced = require('./')
+var balanced = require('./');
+
+console.log(balanced('{', '}', 'pre{in{nested}}post'));
+console.log(balanced('{', '}', 'pre{first}between{second}post'));
 
-console.log(balanced('{', '}', 'pre{in{nested}}post'))
-console.log(balanced('{', '}', 'pre{first}between{second}post'))

index.js

@@ -1,62 +1,62 @@
-'use strict'
-module.exports = balanced
-function balanced (a, b, str) {
-  if (a instanceof RegExp) a = maybeMatch(a, str)
-  if (b instanceof RegExp) b = maybeMatch(b, str)
+'use strict';
+module.exports = balanced;
+function balanced(a, b, str) {
+  if (a instanceof RegExp) a = maybeMatch(a, str);
+  if (b instanceof RegExp) b = maybeMatch(b, str);
 
-  const r = range(a, b, str)
+  var r = range(a, b, str);
 
   return r && {
     start: r[0],
     end: r[1],
     pre: str.slice(0, r[0]),
     body: str.slice(r[0] + a.length, r[1]),
     post: str.slice(r[1] + b.length)
-  }
+  };
 }
 
-function maybeMatch (reg, str) {
-  const m = str.match(reg)
-  return m ? m[0] : null
+function maybeMatch(reg, str) {
+  var m = str.match(reg);
+  return m ? m[0] : null;
 }
 
-balanced.range = range
-function range (a, b, str) {
-  let begs, beg, left, right, result
-  let ai = str.indexOf(a)
-  let bi = str.indexOf(b, ai + 1)
-  let i = ai
+balanced.range = range;
+function range(a, b, str) {
+  var begs, beg, left, right, result;
+  var ai = str.indexOf(a);
+  var bi = str.indexOf(b, ai + 1);
+  var i = ai;
 
   if (ai >= 0 && bi > 0) {
-    if (a === b) {
-      return [ai, bi]
+    if(a===b) {
+      return [ai, bi];
     }
-    begs = []
-    left = str.length
+    begs = [];
+    left = str.length;
 
     while (i >= 0 && !result) {
-      if (i === ai) {
-        begs.push(i)
-        ai = str.indexOf(a, i + 1)
-      } else if (begs.length === 1) {
-        result = [begs.pop(), bi]
+      if (i == ai) {
+        begs.push(i);
+        ai = str.indexOf(a, i + 1);
+      } else if (begs.length == 1) {
+        result = [ begs.pop(), bi ];
       } else {
-        beg = begs.pop()
+        beg = begs.pop();
         if (beg < left) {
-          left = beg
-          right = bi
+          left = beg;
+          right = bi;
         }
 
-        bi = str.indexOf(b, i + 1)
+        bi = str.indexOf(b, i + 1);
       }
 
-      i = ai < bi && ai >= 0 ? ai : bi
+      i = ai < bi && ai >= 0 ? ai : bi;
     }
 
     if (begs.length) {
-      result = [left, right]
+      result = [ left, right ];
     }
   }
 
-  return result
+  return result;
 }