feat: github action for validating redirects

.github/workflows/push_redirects.yml

@@ -0,0 +1,41 @@
+name: Push to Redirects
+
+on:
+  push:
+    paths:
+      - 'public/_redirects'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  validate:
+    name: Validate redirects
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+
+    steps:
+      - name: ⬇️ Set up code
+        uses: actions/checkout@v4
+        with:
+          show-progress: false
+
+      - name: ⎔ Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: lts/*
+          cache: npm
+
+      - name: 🏗️ Build Site
+        working-directory: ./
+        run: |
+          npm install
+          npm run build
+
+      - name: ✔ Validate redirects
+        working-directory: ./src/migrations
+        run: |
+          npm install
+          node validate-redirects.mjs

src/migrations/validate-redirects.mjs

@@ -0,0 +1,50 @@
+import { globSync } from 'glob';
+import { open } from 'node:fs/promises';
+import { join } from 'node:path';
+import { validateProductPageUrl } from './utilities.mjs';
+
+const redirectPath = join('..', '..', 'public', '_redirects');
+let file = await open(redirectPath, 'r');
+
+// get urls from built files
+const fileUrls = globSync('../../dist/**/*.html', { ignore: '../../dist/404.html' }).map((path) =>
+  path
+    .replace('../../dist', '')
+    .replace(/index\.html$/, '')
+    .replace(/\/$/, ''),
+);
+
+const errors = [];
+let isFirstLine = true;
+for await (const line of file.readLines()) {
+  if (isFirstLine) {
+    isFirstLine = false;
+    continue; // Skip the first line
+  }
+
+  let [source, destination] = line.split(' ').filter((l) => l);
+
+  if (destination.startsWith('/')) {
+    destination = destination.replace(/\/$/, '');
+    if (!fileUrls.includes(destination)) {
+      const message = `destination: "${destination}" not found`;
+      console.error(message);
+      errors.push(message);
+    }
+  } else {
+    const response = await validateProductPageUrl(destination);
+    if (!response.valid) {
+      const message = `destination: ${destination} failed validation with message: ${response.message}`;
+      console.error(message);
+      errors.push(message);
+    }
+  }
+}
+
+file.close();
+
+if (errors.length > 0) {
+  process.exit(1);
+}
+
+process.exit(0);