refactor: extracted action

.github/actions/bundle-gh-page/action.yml

@@ -4,8 +4,7 @@ runs:
   using: "composite"
   steps:
     - name: ↔ Extract branch name
-      shell: bash
-      run: echo "##[set-output name=branch;]$(echo ${GITHUB_REF#refs/heads/})"
+      uses: ./.github/actions/extract-branch
       id: extract_branch
     - name: ➕ Create temp or public dir
       run: |

.github/actions/extract-branch/action.yml

@@ -0,0 +1,27 @@
+---
+name: "Extract branch name"
+description: "Extract branch name based on pr or push"
+outputs:
+  branch-name:
+    description: "Branch name"
+    value: ${{ steps.branch-name.outputs.branch-name }}
+runs:
+  using: "composite"
+  steps:
+    - name: ⏬ Get branch name
+      uses: actions/github-script@v6
+      id: get-branch-name
+      with:
+        result-encoding: string
+        script: |
+          return (
+          context?.payload?.pull_request?.head?.ref ||
+          context?.payload?.ref || ""
+          ).replace("refs/heads/","");
+
+    - name: 🪑 Set output
+      id: branch-name
+      run: echo "branch-name=$BRANCH_NAME" >> $GITHUB_OUTPUT
+      shell: bash
+      env:
+        BRANCH_NAME: ${{steps.get-branch-name.outputs.result}}