[BUG] last line of globalTeardown output is cleared by line reporter

[mxschmitt]

Repro:

diff --git a/examples/todomvc/globalSetup.ts b/examples/todomvc/globalSetup.ts
new file mode 100644
index 000000000..0f80bb680
--- /dev/null
+++ b/examples/todomvc/globalSetup.ts
@@ -0,0 +1,3 @@
+export default () => {
+  console.log('\\n%%from-global-setup');
+}
\ No newline at end of file
diff --git a/examples/todomvc/globalTeardown.ts b/examples/todomvc/globalTeardown.ts
new file mode 100644
index 000000000..d9faa7d89
--- /dev/null
+++ b/examples/todomvc/globalTeardown.ts
@@ -0,0 +1,3 @@
+export default () => {
+  console.log('\\n%%from-global-teardown');
+}
\ No newline at end of file
diff --git a/examples/todomvc/playwright.config.ts b/examples/todomvc/playwright.config.ts
index 06e262f2f..14fc4606d 100644
--- a/examples/todomvc/playwright.config.ts
+++ b/examples/todomvc/playwright.config.ts
@@ -46,6 +46,9 @@ export default defineConfig({
     trace: 'on-first-retry',
   },
 
+  globalSetup: './globalSetup.ts',
+  globalTeardown: './globalTeardown.ts',
+
   /* Configure projects for major browsers */
   projects: [
     {
@@ -57,20 +60,6 @@ export default defineConfig({
       },
     },
 
-    {
-      name: 'firefox',
-      use: {
-        ...devices['Desktop Firefox'],
-      },
-    },
-
-    {
-      name: 'webkit',
-      use: {
-        ...devices['Desktop Safari'],
-      },
-    },
-
     /* Test against mobile viewports. */
     // {
     //   name: 'Mobile Chrome',

inside the examples/todomvc project: npx playwright test --reporter=html.

Expected: We see the console.log of global teardown.
Actual: We don't.

When setting this to true it works:

playwright/packages/playwright-test/src/reporters/html.ts

Lines 63 to 65 in 5821c54

	printsToStdio() {
	return false;
	}

[dgozman]

This is because reporter (in this case, list reporter) is not aware of the terminal output produced by global teardown, and so this output is overridden with the test epilogue.

A solution would be to capture all output in the main process, but then all reporters should use a real output method instead of the captured one, which is not backwards compatible.

Running global setup/teardown in a separate process would also help, but we already do that for dependencies, so seems like not worth it.

[Andarist]

The problem is not unique to global teardown - we found out that line reporter can clear the last line of our reporter's output, in case the line reporter gets used after ours.