nginx host static files, add trailing slash when using implicit index.html, preserve anchors and queries

example.com.conf

server {
	listen 443 ssl http2;
	listen [::]:443 ssl http2;
	server_name example.com;

	# ends in slash
	location ~ /$ {
		root /var/www/example.com;
		try_files $uri/index.html =404;
	}

	# ends in extension
	location ~ /[^/][^/.]*\.[a-zA-Z0-9]+$ {
		root /var/www/example.com;
		try_files $uri =404;
	}

	# ends in bare path
	location ~ [^/]$ {
		return 302 $uri/$query_string;
	}
}