Merge branch 'master' into wuandy/Bundles

# Conflicts:
#	packages/firestore/exp/src/api/database.ts
#	packages/firestore/src/api/database.ts
#	packages/firestore/src/core/firestore_client.ts

Author: wu-hui

.changeset/fuzzy-impalas-brake.md

@@ -0,0 +1,5 @@
+---
+"@firebase/util": patch
+---
+
+Do not merge `__proto__` in `deepExtend` to prevent `__proto__` pollution.

.changeset/great-rice-smash.md

@@ -22,43 +22,42 @@ jobs:
     - name: Run changeset script
       run: yarn ts-node-script scripts/check_changeset.ts
       id: check-changeset
-    - name: Read output
-      run: echo "${{steps.check-changeset.outputs.MISSING_PACKAGES}}"
+    - name: Print changeset checker output
+      run: echo "${{steps.check-changeset.outputs.CHANGESET_ERROR_MESSAGE}}"
     - name: Find Comment
       uses: peter-evans/find-comment@v1
       id: fc
       with:
         issue-number: ${{github.event.number}}
         body-includes: Changeset File Check
     - name: Create comment (missing packages)
-      if: ${{!steps.fc.outputs.comment-id && steps.check-changeset.outputs.MISSING_PACKAGES}}
+      if: ${{!steps.fc.outputs.comment-id && steps.check-changeset.outputs.CHANGESET_ERROR_MESSAGE}}
       uses: peter-evans/create-or-update-comment@v1
       with:
         issue-number: ${{github.event.number}}
         body: |
           ### Changeset File Check :warning:
-          Warning: This PR modifies files in the following packages but they have not been included in the changeset file:
-          ${{steps.check-changeset.outputs.MISSING_PACKAGES}}
-          
-          Make sure this was intentional.
+          ${{steps.check-changeset.outputs.CHANGESET_ERROR_MESSAGE}}
     - name: Update comment (missing packages)
       if: ${{steps.fc.outputs.comment-id}}
       uses: peter-evans/create-or-update-comment@v1
       with:
-        comment-id: ${{steps.fc.outputs.comment-id}} && steps.check-changeset.outputs.MISSING_PACKAGES}}
+        comment-id: ${{steps.fc.outputs.comment-id}} && steps.check-changeset.outputs.CHANGESET_ERROR_MESSAGE}}
         edit-mode: replace
         body: |
           ### Changeset File Check :warning:
-          Warning: This PR modifies files in the following packages but they have not been included in the changeset file:
-          ${{steps.check-changeset.outputs.MISSING_PACKAGES}}
-
-          Make sure this was intentional.
+          ${{steps.check-changeset.outputs.CHANGESET_ERROR_MESSAGE}}
     - name: Update comment (no missing packages)
-      if: ${{steps.fc.outputs.comment-id && !steps.check-changeset.outputs.MISSING_PACKAGES}}
+      if: ${{steps.fc.outputs.comment-id && !steps.check-changeset.outputs.CHANGESET_ERROR_MESSAGE}}
       uses: peter-evans/create-or-update-comment@v1
       with:
         comment-id: ${{steps.fc.outputs.comment-id}}
         edit-mode: replace
         body: |
           ### Changeset File Check :white_check_mark:
-          No modified packages are missing from the changeset file.
+          - No modified packages are missing from the changeset file.
+          - No changeset formatting errors detected.
+    # Don't want it to throw before editing the comment.
+    - name: Fail if checker script logged a blocking failure
+      if: ${{steps.check-changeset.outputs.BLOCKING_FAILURE}}
+      run: exit 1

.changeset/short-icons-travel.md

@@ -88,6 +88,7 @@ packages-exp/**/temp
 
 # temp markdowns generated for individual SDKs
 packages-exp/**/docs
+packages/**/docs
 
 # files generated by api-extractor that should not be tracked
 tsdoc-metadata.json