Declare modules that are loaded on article views

Tracking bundlesizes on modules that are loaded on page load, allows
us to track overall site performance for article views.

These budgets are set to null for now, as tracking and enforcing
their size is optional per
https://www.mediawiki.org/wiki/Performance_budgeting

Bug: T360590
Change-Id: I1f47161b3e2c5116a7a1622bed41fba0c44c5f07

bundlesize.config.json

@@ -0,0 +1,18 @@
+[
+	{
+		"resourceModule": "wikibase.client.data-bridge.externalModifiers",
+		"maxSize": null
+	},
+	{
+		"resourceModule": "wikibase.client.data-bridge.init",
+		"maxSize": null
+	},
+	{
+		"resourceModule": "wikibase.client.init",
+		"maxSize": null
+	},
+	{
+		"resourceModule": "wikibase.vector.searchClient",
+		"maxSize": null
+	}
+]

lib/tests/phpunit/WikibaseBundleSizeTest.php

@@ -0,0 +1,30 @@
+<?php
+
+declare( strict_types = 1 );
+
+namespace Wikibase\Lib\Tests;
+
+use MediaWiki\Tests\Structure\BundleSizeTestBase;
+
+/**
+ * Track the size of ResourceLoader modules that repo or client load on page load.
+ *
+ * @group Wikibase
+ * @license GPL-2.0-or-later
+ * @coversNothing
+ */
+class WikibaseBundleSizeTest extends BundleSizeTestBase {
+
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->markTestSkippedIfExtensionNotLoaded( 'WikibaseRepository' );
+		$this->markTestSkippedIfExtensionNotLoaded( 'WikibaseClient' );
+	}
+
+	/** @inheritDoc */
+	public function getBundleSizeConfig(): string {
+		return dirname( __DIR__, 3 ) . '/bundlesize.config.json';
+	}
+
+}