wp-graphql-filter-query-analyzer-keys.php

add_action( 'init_graphql_request', function() {

	$analyzer = null;

	add_action( 'graphql_determine_graphql_keys', function( \WPGraphQL\Utils\QueryAnalyzer $query_analyzer, $query ) use ( &$analyzer ) {
		$analyzer = $query_analyzer;
	}, 10, 2 );

	add_filter( 'graphql_query_analyzer_get_runtime_nodes', function( $nodes ) use ( &$analyzer ) {

		if ( 'operation:GetPostsForBlog' === $analyzer->get_operation_name() ) {
			return [];
		}

		return $nodes;

	}  );

} );