some improvements (#1030)

* update GitHub Actions

> Node.js 12 actions are deprecated. For more information see:
> https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/.
> Please update the following actions to use Node.js 16: actions/checkout,
> actions/setup-node, actions/cache, actions/checkout

* show location in output if URL is redirected

.github/workflows/pull_request.yml

@@ -9,12 +9,12 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f
-      - uses: actions/setup-node@56899e050abffc08c2b3b61f3ec6a79a9dc3223d
+      - uses: actions/checkout@e2f20e631ae6d7dd3b768f56a5d2af784dd54791
+      - uses: actions/setup-node@8c91899e586c5b171469028077307d293428b516
         with:
           node-version: 12
 
-      - uses: actions/cache@0781355a23dac32fd3bac414512f4b903437991a
+      - uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7
         id: cache
         with:
           path: ~/.npm

tests/common.mjs

@@ -1,8 +1,9 @@
 import fetch from 'node-fetch';
+import { isRedirect } from 'node-fetch';
 import {readFileSync} from 'fs';
 
 const LINKS_OPTIONS = {
-  redirect: 'error',
+  redirect: 'manual',
   headers: {
     'Content-Type': 'application/json',
     'user-agent':
@@ -56,8 +57,9 @@ const partition = (arr, func) => {
 
 async function fetch_link(url) {
   try {
-    const { ok, statusText, redirected } = await fetch(url, LINKS_OPTIONS);
-    return [url, { ok, status: statusText, redirected }];
+    const { headers, ok, status, statusText } = await fetch(url, LINKS_OPTIONS);
+    const redirect = isRedirect(status) ? { redirect: { src: url, dst: headers.get("location") } } : {};
+    return [url, { ok, status: statusText, ...redirect }];
   } catch (error) {
     return [url, { ok: false, status: error.message }];
   }