added decoding to the querystring.js

Author: Droid-An

Sprint-2/implement/querystring.js

@@ -6,7 +6,9 @@ function parseQueryString(queryString) {
   const keyValuePairs = queryString.split("&");
 
   for (const pair of keyValuePairs) {
-    const [key, value] = pair.split(/=(.*)/s);
+    const decodedPair = decodeURIComponent(pair);
+    const [key, value] = decodedPair.split(/=(.*)/s);
+
     queryParams[key] = value;
   }
 

Sprint-2/implement/querystring.test.js

@@ -3,10 +3,16 @@
 // Below is one test case for an edge case the implementation doesn't handle well.
 // Fix the implementation for this test, and try to think of as many other edge cases as possible - write tests and fix those too.
 
-const parseQueryString = require("./querystring.js")
+const parseQueryString = require("./querystring.js");
 
 test("parses querystring values containing =", () => {
   expect(parseQueryString("equation=x=y+1")).toEqual({
     "equation": "x=y+1",
   });
 });
+
+test("parses querystring encoded values containing =", () => {
+  expect(parseQueryString("a%25b=c%26d")).toEqual({
+    "a%b": "c&d",
+  });
+});