Add browser tests

Author: NikolayFrantsev

README.md

@@ -8,7 +8,7 @@ Simple parser for transparency and consent strings compatible with TCF2.0.
 
 ## Usage
 
-### NodeJS
+### NodeJS (>=5.10.0)
 
 ```js
 const TCStringParse = require('tc-string-parse');
@@ -17,7 +17,7 @@ const consentString = ''; // your consent string
 TCStringParse(consentString);
 ```
 
-### Browser
+### Browser (IE 9+ with atob polyfill)
 
 ```html
 <script src="path/to/tc-string-parse.js"></script>

package.json

@@ -17,5 +17,8 @@
   "devDependencies": {
     "ava": "3.5.1",
     "eslint": "6.8.0"
+  },
+  "engines": {
+    "node": ">=5.10.0"
   }
 }

tc-string-parse.js

@@ -11,7 +11,11 @@
 }(typeof self === "undefined" ? this : self, function () {
     var decodeBase64 = function (str) {
         if (typeof atob === "function") {
-            return atob(str);
+            var base64 = str.
+                replace(/_/g, "/").
+                replace(/-/g, "+");
+
+            return atob(base64);
         }
 
         return Buffer.from(str, "base64").toString("binary");

tc-string-parse.test.html

@@ -0,0 +1,6 @@
+<script src="tc-string-parse.js"></script>
+
+<script>
+  var consentString = "COuDmHAOuG5DAALAWhDAAcCMAP_AACAAACgAF0EWSQgAYWwho0QUBzBAIYAfJgSCAMgSAAQIoCkFQICERBAEKiAQHAEQJAAAGBAAkACBAQAoHCBMCQABgAARiRCEQECIDRNABIBAggAKYQFAAARmikHC3ZCY702yOmQAECAA.IF0EWSQgAYWwho0QUBzBAIYAfJgSCAMgSAAQIoCkFQICERBAEKiAQHAEQJAAAGBAAkACAAQAoHCBMCQABgAARiRCEQECIDRNABIBAggAKYQFAAARmikHC3ZCY702yOmQ.YAAAAAAAAAAAAAAAAAA";
+  document.write(JSON.stringify(TCStringParse(consentString)));
+</script>