ci: global changelog generator script

package.json

@@ -23,7 +23,8 @@
         "build:types": "wireit",
         "build:watch": "wireit",
         "changeset-snapshot-publish": "yarn prepublishOnly && yarn changeset version --snapshot && yarn lint:versions --fix && yarn update-version && yarn changeset publish --no-git-tag --tag snapshot",
-        "changeset-publish": "yarn prepublishOnly && yarn changeset version && yarn install && yarn lint:versions --fix && yarn update-version && yarn changeset publish --no-git-tag && yarn push-to-remote && yarn create-git-tag && yarn postpublish",
+        "changeset-publish": "yarn prepublishOnly && yarn changeset version && yarn changelog:global && yarn install && yarn lint:versions --fix && yarn update-version && yarn changeset publish --no-git-tag && yarn push-to-remote && yarn create-git-tag && yarn postpublish",
+        "changelog:global": "node ./scripts/add-global-changelog.js",
         "update-version": "node ./tasks/update-version.js",
         "chromatic": "chromatic --build-script-name storybook:build # note that --project-token must be set in your env variables",
         "create-git-tag": "node --no-warnings tasks/create-git-tag.js",

scripts/add-global-changelog.js

@@ -0,0 +1,93 @@
+/*
+Copyright 2025 Adobe. All rights reserved.
+This file is licensed to you under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License. You may obtain a copy
+of the License at http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under
+the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+OF ANY KIND, either express or implied. See the License for the specific language
+governing permissions and limitations under the License.
+
+*/
+
+import fs from 'fs';
+import { execSync } from 'child_process';
+import { fileURLToPath } from 'url';
+import path from 'path';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const repoUrl = 'https://github.com/adobe/spectrum-web-components';
+
+const pkg = JSON.parse(
+    fs.readFileSync(path.resolve(__dirname, '../package.json'), 'utf-8')
+);
+const newVersion = pkg.version;
+const newTag = `v${newVersion}`;
+const prevTag = execSync('git tag --sort=-creatordate')
+    .toString()
+    .split('\n')
+    .filter(Boolean)
+    .find((tag) => tag !== newTag);
+
+if (!prevTag) {
+    console.error('No previous tag found.');
+    process.exit(1);
+}
+
+const date = new Date().toISOString().split('T')[0];
+const compareUrl = `${repoUrl}/compare/${prevTag}...${newTag}`;
+const commitLogs = execSync(`git log ${prevTag}..HEAD --pretty=format:"%s|%h"`)
+    .toString()
+    .trim();
+
+const commits = commitLogs.split('\n').map((line) => {
+    const [message, hash] = line.split('|');
+    return { message, hash };
+});
+
+const features = [];
+const fixes = [];
+
+commits.forEach(({ message, hash }) => {
+    const typeMatch = message.match(/^(feat|fix)\(([^)]+)\):\s*(.+)/i);
+    if (typeMatch) {
+        const [, type, scope, description] = typeMatch;
+        const entry = `-   **${scope}**: ${description} ([\`${hash}\`](${repoUrl}/commit/${hash}))`;
+        if (type === 'feat') {
+            features.push(entry);
+        } else if (type === 'fix') {
+            fixes.push(entry);
+        }
+    }
+});
+
+// Skip if nothing relevant
+if (!features.length && !fixes.length) {
+    console.log('🚫 No new feat() or fix() commits to add.');
+    process.exit(0);
+}
+
+// Format new changelog entry
+let newEntry = `# [${newVersion}](${compareUrl}) (${date})\n\n`;
+
+if (fixes.length) {
+    newEntry += `### Bug Fixes\n\n${fixes.join('\n')}\n\n`;
+}
+
+if (features.length) {
+    newEntry += `### Features\n\n${features.join('\n')}\n\n`;
+}
+
+// Prepend to existing CHANGELOG.md
+const changelogPath = path.resolve(__dirname, '../CHANGELOG.md');
+const existingChangelog = fs.existsSync(changelogPath)
+    ? fs.readFileSync(changelogPath, 'utf-8')
+    : '';
+
+fs.writeFileSync(
+    changelogPath,
+    `${newEntry.trim()}\n\n${existingChangelog}`,
+    'utf-8'
+);
+console.log(`✅ CHANGELOG updated for ${newVersion}`);