REST API: Introduce Plugins and Block Directory endpoint

src/wp-admin/edit-form-blocks.php

@@ -361,12 +361,14 @@
 );
 wp_tinymce_inline_scripts();
 wp_enqueue_editor();
+wp_enqueue_script( 'wp-block-directory' );
 
 /**
  * Styles
  */
 wp_enqueue_style( 'wp-edit-post' );
 wp_enqueue_style( 'wp-format-library' );
+wp_enqueue_style( 'wp-block-directory' );
 
 /**
  * Fires after block assets have been enqueued for the editing interface.

src/wp-admin/includes/plugin-install.php

@@ -173,14 +173,17 @@ function plugins_api( $action, $args = array() ) {
 		$request   = wp_remote_get( $url, $http_args );
 
 		if ( $ssl && is_wp_error( $request ) ) {
-			trigger_error(
-				sprintf(
-					/* translators: %s: Support forums URL. */
-					__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),
-					__( 'https://wordpress.org/support/forums/' )
-				) . ' ' . __( '(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)' ),
-				headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE
-			);
+			if ( ! wp_is_json_request() ) {
+				trigger_error(
+					sprintf(
+						/* translators: %s: Support forums URL. */
+						__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),
+						__( 'https://wordpress.org/support/forums/' )
+					) . ' ' . __( '(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)' ),
+					headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE
+				);
+			}
+
 			$request = wp_remote_get( $http_url, $http_args );
 		}
 

src/wp-includes/rest-api.php

@@ -285,6 +285,14 @@ function create_initial_rest_routes() {
 	$controller = new WP_REST_Themes_Controller;
 	$controller->register_routes();
 
+	// Plugins.
+	$controller = new WP_REST_Plugins_Controller();
+	$controller->register_routes();
+
+	// Block Directory.
+	$controller = new WP_REST_Block_Directory_Controller();
+	$controller->register_routes();
+
 }
 
 /**