Stick with %20, don't replace with +

src/shared/uriTemplate.test.ts

@@ -34,7 +34,7 @@ describe("UriTemplate", () => {
     it("should encode reserved characters", () => {
       const template = new UriTemplate("{var}");
       expect(template.expand({ var: "value with spaces" })).toBe(
-        "value+with+spaces",
+        "value%20with%20spaces",
       );
     });
   });

src/shared/uriTemplate.ts

@@ -125,7 +125,7 @@ export class UriTemplate {
     if (operator === "+" || operator === "#") {
       return encodeURI(value);
     }
-    return encodeURIComponent(value).replace(/%20/g, "+");
+    return encodeURIComponent(value);
   }
 
   private expandPart(