Add rollback script, move auto-changelog script (#6252)

development/rollback.sh

@@ -0,0 +1,35 @@
+#! /bin/bash
+
+[[ -z "$1" ]] && { echo "Rollback version is required!" ; exit 1; }
+echo "Rolling back to version $1"
+
+# Checkout branch to increment version
+git checkout -b version-increment-$1
+npm run version:bump patch
+
+# Store the new version name
+NEW_VERSION=$(cat app/manifest.json | jq -r .version)
+
+# Make sure origin tags are loaded
+git fetch origin
+
+# check out the rollback branch
+git checkout origin/v$1
+
+# Create the rollback branch.
+git checkout -b Version-$NEW_VERSION-Rollback-to-$1
+
+# Set the version files to the next one.
+git checkout master CHANGELOG.md
+git checkout master app/manifest.json
+git commit -m "Version $NEW_VERSION (Rollback to $1)"
+
+# Push the new branch to PR
+git push -u origin HEAD
+
+# Create tag and push that up too
+git tag v${NEW_VERSION}
+git push origin v${NEW_VERSION}
+
+# Cleanup version branch
+git branch -D version-increment-$1

docs/sensitive-release.md

@@ -18,10 +18,10 @@ Simply follow the steps in [the publishing guide](./publishing.md).
 
 ### Prepare Rollback Release
 
-1. Check out the tagged commit for the release before this new release.
-2. Increment the version over the new release by one patch.
-3. Merge the changelog of the new release into this branch, and make its own changelog refer to rolling back those changes.
-4. Push to the main repository and pull request against `master` prominently noting this is a `DO NOT MERGE` rollback pull request.
+1. Be on the new risky version branch.
+2. Run `npm run rollback $ROLLBACK_TARGET_VERSION`.
+
+The rollback version will now be a branch and tag on the origin.
 
 ### Roll the normal release out
 

package.json

@@ -36,7 +36,8 @@
     "announce": "node development/announcer.js",
     "version:bump": "node development/run-version-bump.js",
     "storybook": "start-storybook -p 6006 -c .storybook",
-    "update-changelog": "./auto-changelog.sh"
+    "update-changelog": "./development/auto-changelog.sh",
+    "rollback": "./development/rollback.sh"
   },
   "browserify": {
     "transform": [