WP_REST_Themes_Controller::prepare_theme_support( mixed $support, array $args, string $feature, WP_REST_Request $request )

Source

File: wp-includes/rest-api/endpoints/class-wp-rest-themes-controller.php

protected function prepare_theme_support( $support, $args, $feature, $request ) {
		$schema = $args['show_in_rest']['schema'];

		if ( 'boolean' === $schema['type'] ) {
			return true;
		}

		if ( is_array( $support ) && ! $args['variadic'] ) {
			$support = $support[0];
		}

		return rest_sanitize_value_from_schema( $support, $schema );
	}