Hash computation performed one time, instead of for each conversion

README.md

@@ -14,7 +14,7 @@ encodeURI(dumbson): -~name~*~John~.~value~*15!
 This looks retarded, however:
 - it gives better URLs, than just putting plain or base64 JSON into query string
 - it works as reliable as plain JSON
-- there is strong guarantee that ```serialize(parse(dumbson)) = dumbson```
+- ```serialize(parse(dumbson)) == dumbson```, which hard to guarantee for more complex methods
 
 ## Usage
 

index.js

@@ -5,11 +5,12 @@ var replacements = {
     to:   '()-!*.~'
 };
 
+var hash = {};
+replacements.from.split('').forEach((c, n) => hash[c] = replacements.to[n]);
+replacements.to.split('').forEach((c, n) => hash[c] = replacements.from[n]);
+
 function replace(src) {
     src = src || "";
-    var hash = {};
-    replacements.from.split('').forEach((c, n) => hash[c] = replacements.to[n]);
-    replacements.to.split('').forEach((c, n) => hash[c] = replacements.from[n]);
 
     var chars = src.split('');
     chars.forEach((c, n) => {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "dumbson",
-  "version": "0.1.0",
+  "version": "0.1.2",
   "description": "A dumb way to serialize JS objects to query string",
   "main": "index.js",
   "scripts": {