See if I can fix the autofix workflow by using our existing actions to detect changed files

Author: somewhatabstract

.github/workflows/pr-autofix.yml

@@ -13,34 +13,27 @@ jobs:
       - name: Setup Node.js, install deps
         uses: ./.github/actions/setup
 
-      - id: paths_src_
-        name: 'Check paths: src/**'
-        run: >-
-          BASE=${GITHUB_BASE_REF:-HEAD~1}
-
-          if [[ -n $(git diff --name-only refs/remotes/origin/$BASE --relative |
-          grep '^src/.*$') ]]
-
-          then
-
-          echo "changed=true" >> $GITHUB_OUTPUT
-
-          exit 0
-
-          fi
-
-          echo "changed=false" >> $GITHUB_OUTPUT
-
-          exit 0
+      - name: Get All Changed Files
+        uses: Khan/actions@get-changed-files-v1
+        id: changed
+        with:
+          directories: src/
+
+      - id: changed-js
+        name: Find .js changed files
+        uses: Khan/actions@filter-files-v1
+        if: always()
+        with:
+          changed-files: ${{ steps.changed.outputs.files }}
+          extensions: '.js'
 
       - name: Run prettier
-        run: >-
-          node ./node_modules/actions-utils/list-changed-files.js | grep
-          '.*\.js$' | xargs npm run -s format-files
+        if: steps.changed-js.outputs.filtered != ''
+        run: yarn run format-files ${{ steps.changed-js.outputs.filtered }}
 
       - name: Rebuild our "dist" file
+        if: steps.changed.outputs.files != ''
         run: yarn build
-        if: steps.paths_src_.outputs.changed == 'true'
 
       - uses: Khan/autofix-commit-action@main
         env: