Upload npm logs during debug or failure runs

.github/setup-node/action.yml

@@ -35,6 +35,19 @@ runs:
           run: npm ci
           shell: bash
 
+        - name: Find npm log location
+          id: npm-cache-location
+          if: ${{ failure() || runner.debug }}
+          run: echo "NODE_CACHE_LOCATION=$(npm config get cache)" >> $GITHUB_OUTPUT
+          shell: bash
+
+        - name: Upload logs as artifact
+          if: ${{ failure() || runner.debug }}
+          uses: actions/upload-artifact@65462800fd760344b1a7b4382951275a0abb4808 # v4.3.3
+          with:
+              name: npm-logs-${{ matrix.os }}-${{ matrix.node }}
+              path: '${{ steps.npm-cache-location.outputs.NODE_CACHE_LOCATION }}/_logs'
+
         # On cache hit, we run the post-install script to match the native `npm ci` behavior.
         # An example of this is to patch `node_modules` using patch-package.
         - name: Post-install