Exclude rel=nofollow links from prefetch/prerender

Author: westonruter

plugins/speculation-rules/helper.php

@@ -77,7 +77,7 @@ function plsr_get_speculation_rules() {
 			'source'    => 'document',
 			'where'     => array(
 				'and' => array(
-					// Prerender any URLs within the same site.
+					// Include any URLs within the same site.
 					array(
 						'href_matches' => $prefixer->prefix_path_pattern( '/*' ),
 					),
@@ -87,6 +87,12 @@ function plsr_get_speculation_rules() {
 							'href_matches' => $href_exclude_paths,
 						),
 					),
+					// Also exclude rel=nofollow links, as plugins like WooCommerce attribute their add-to-cart links (which should buttons).
+					array(
+						'not' => array(
+							'selector_matches' => 'a[rel=nofollow]',
+						),
+					),
 				),
 			),
 			'eagerness' => $eagerness,

tests/plugins/speculation-rules/speculation-rules-helper-test.php

@@ -100,7 +100,7 @@ public function test_plsr_get_speculation_rules_prerender() {
 		$rules = plsr_get_speculation_rules();
 
 		$this->assertArrayHasKey( 'prerender', $rules );
-		$this->assertCount( 3, $rules['prerender'][0]['where']['and'] );
+		$this->assertCount( 4, $rules['prerender'][0]['where']['and'] );
 	}
 
 	/**
@@ -112,7 +112,7 @@ public function test_plsr_get_speculation_rules_prefetch() {
 		$rules = plsr_get_speculation_rules();
 
 		$this->assertArrayHasKey( 'prefetch', $rules );
-		$this->assertCount( 2, $rules['prefetch'][0]['where']['and'] );
+		$this->assertCount( 3, $rules['prefetch'][0]['where']['and'] );
 	}
 
 	/**