add standard

example.js

@@ -1,5 +1,4 @@
-var balanced = require('./');
-
-console.log(balanced('{', '}', 'pre{in{nested}}post'));
-console.log(balanced('{', '}', 'pre{first}between{second}post'));
+const balanced = require('./')
 
+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)
 
-  var r = range(a, b, str);
+  const 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) {
-  var m = str.match(reg);
-  return m ? m[0] : null;
+function maybeMatch (reg, str) {
+  const m = str.match(reg)
+  return m ? m[0] : null
 }
 
-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;
+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
 
   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
 }