check existing pr prereleases and increment version

svelteplot · gka · May 26, 2025 · May 19, 2025 · May 26, 2025 · May 26, 2025
commit a65bb49f9618d493a5704ca9ce3d2be7c0b13d88
diff --git a/.github/workflows/preview-publish.yml b/.github/workflows/preview-publish.yml
@@ -59,23 +59,47 @@ jobs:
             - name: Generate preview version
               run: |
                   pr_number=${{ github.event.pull_request.number }}
+
+                  # Check if a prerelease version for this PR already exists on npm
+                  existing_versions=$(npm view svelteplot versions --json 2>/dev/null | grep -o "\".*pr-${pr_number}[.][0-9]*\"" || echo "")
+
+                  if [ -n "$existing_versions" ]; then
+                    # Get the latest prerelease version for this PR
+                    latest_version=$(echo $existing_versions | sed 's/,/\n/g' | sort -V | tail -n 1 | sed 's/"//g')
+                    echo "Found existing prerelease version: $latest_version"
+
+                    # Set the package version to the existing version so npm version will properly increment
+                    npm version $latest_version --no-git-tag-version
+                  fi
+
+                  # Now increment the prerelease version (or create it if it doesn't exist)
                   npm version prerelease --preid=pr-${pr_number} --no-git-tag-version
+
+                  echo "Generated version: $(node -p "require('./package.json').version")"
 
             - name: Publish to npm
               env:
                   NODE_AUTH_TOKEN: ${{ secrets.NPM_AUTH }}
               run: npm publish --tag pr-${{ github.event.pull_request.number }} --access public
 
+            # Save version for use in PR comment
+            - name: Save version
+              run: echo "PACKAGE_VERSION=$(node -p "require('./package.json').version")" >> $GITHUB_ENV
+
             - name: Comment on PR
               uses: peter-evans/create-or-update-comment@v3
               with:
                   issue-number: ${{ github.event.pull_request.number }}
                   body: |
                       📦 Preview package for this PR is published!
+
+                      Version: `${{ env.PACKAGE_VERSION }}`
 
                       Install it with:
                       ```bash
                       npm install svelteplot@pr-${{ github.event.pull_request.number }}
+                      # or install the specific version
+                      npm install svelteplot@${{ env.PACKAGE_VERSION }}
                       ```
                   reactions: '+1, rocket'
                   edit-mode: replace