Consolidate into pre-existing workflow.

Author: desrosj

.github/workflows/check-built-files.yml

@@ -49,3 +49,11 @@ jobs:
     uses: ./.github/workflows/reusable-check-built-files.yml
     permissions:
       contents: read
+
+  # Compares the results of the build script with WordPress/WordPress.
+  compare-build-script-results:
+    name: Compare built files
+    uses: reusable-compare-built-files-v1.yml
+    permissions:
+      contents: read
+    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}

.github/workflows/compare-built-files.yml

@@ -5,7 +5,7 @@ on:
   pull_request_target:
     types: [ 'opened', 'synchronize', 'reopened', 'edited' ]
   workflow_run:
-    workflows: [ 'Compares Built Files', 'Test Build Processes' ]
+    workflows: [ 'Check Built Files (PRs)', 'Test Build Processes' ]
     types:
       - completed
 
@@ -87,6 +87,7 @@ jobs:
     if: >
       github.repository == 'WordPress/wordpress-develop' &&
       github.event.workflow_run.event == 'pull_request' &&
+      github.event.workflow_run.name == 'Test Build Processes' &&
       github.event.workflow_run.conclusion == 'success'
     steps:
       - name: Download artifact
@@ -190,6 +191,7 @@ jobs:
     if: >
       github.repository == 'WordPress/wordpress-develop' &&
       github.event.workflow_run.event == 'pull_request' &&
+      github.event.workflow_run.name == 'Check Built Files (PRs)' &&
       github.event.workflow_run.conclusion == 'success'
     steps:
       - name: Download artifact

.github/workflows/pull-request-comments.yml

@@ -108,3 +108,96 @@ jobs:
         with:
           name: pr-built-file-changes
           path: changes.diff
+
+  # Compares the results of npm run build with WordPress/WordPress
+  #
+  # Performs the following steps:
+  # - Checks out the repository.
+  # - Sets up Node.js.
+  # - Logs debug information about the GitHub Action runner.
+  # - Installs npm dependencies.
+  # - Builds WordPress to run from the build directory.
+  # - Ensures version-controlled files are not modified or deleted.
+  # - Checks out the WordPress/WordPress repository.
+  # - Creates a directory for text files to be uploaded as an artifact.
+  # - Storse a list of files that differ in the build directory from WordPress/WordPress.
+  # - Storse a diff file comparing the build directory to WordPress/WordPress.
+  # - Saves the pull request number to a text file.
+  # - Uploads the generated files as an artifact.
+  compare-built-files:
+    name: Detect differences between WordPress/WordPress
+    runs-on: ubuntu-24.04
+    permissions:
+      contents: read
+    timeout-minutes: 10
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
+          persist-credentials: false
+
+      - name: Set up Node.js
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
+        with:
+          node-version-file: '.nvmrc'
+          cache: npm
+
+      - name: Set up PHP
+        uses: shivammathur/setup-php@accd6127cb78bee3e8082180cb391013d204ef9f # v2.37.0
+        with:
+          php-version: '8.4'
+          coverage: none
+
+      # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
+      # passing a custom cache suffix ensures that the cache is flushed at least once per week.
+      - name: Install Composer dependencies
+        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # v4.0.0
+        with:
+          custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
+
+      - name: Log debug information
+        run: |
+          npm --version
+          node --version
+          git --version
+
+      - name: Install npm Dependencies
+        run: npm ci
+
+      - name: Build WordPress to run from build directory
+        run: npm run build
+
+      - name: Ensure version-controlled files are not modified or deleted
+        run: git diff --exit-code
+
+      - name: Checkout WordPress/WordPress
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          repository: 'WordPress/WordPress'
+          path: ${{ github.workspace }}/built-wordpress
+          show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
+          persist-credentials: false
+
+      - name: Create directory for artifacts
+        run: mkdir artifacts
+
+      - name: Create a list of files that have changed
+        run: diff -rq ${{ github.workspace }}/build ${{ github.workspace }}/built-wordpress | sed "s|${{ github.workspace }}/||g" > artifacts/file-changes.txt
+
+      - name: Create a list of files that have changed
+        run: diff -r ${{ github.workspace }}/build ${{ github.workspace }}/built-wordpress | sed "s|${{ github.workspace }}/||g" > artifacts/changes.diff
+
+      - name: Save PR number
+        run: echo "${EVENT_NUMBER}" > ./artifacts/NR
+        env:
+          EVENT_NUMBER: ${{ github.event.number }}
+
+      # Uploads the associated text files as an artifact.
+      - name: Upload comparison results as an artifact
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
+        #if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name == 'pull_request' }}
+        with:
+          name: build-script-comparison
+          path: artifacts/