Fix whitespace only urls

src/widgets/feed/utils.js

@@ -11,9 +11,10 @@ function getText(node) {
 }
 
 export function httpUrl(value, baseUrl) {
-  if (!value) return null;
+  const trimmed = value?.trim();
+  if (!trimmed) return null;
   try {
-    const url = new URL(value.trim(), baseUrl);
+    const url = new URL(trimmed, baseUrl);
     return ["http:", "https:"].includes(url.protocol) ? url.href : null;
   } catch {
     return null;

src/widgets/feed/utils.test.js

@@ -147,6 +147,8 @@ describe("widgets/feed/utils", () => {
     ["data:image/png;base64,AAAA", undefined, null],
     ["not a url", undefined, null],
     ["", undefined, null],
+    ["  \n ", "https://a.com/feed", null],
+    [" /x ", "https://a.com/feed", "https://a.com/x"],
   ])("httpUrl(%j, %j) is %j", (value, base, expected) => {
     expect(httpUrl(value, base)).toBe(expected);
   });