Rewrite rules for angular and express server

I have node js (express server) as backend for my Angular app and I add rewrite rules to .htaccess, but API call to my express server isn’t correct because rewrite rules. When I deleted my rewrite rules then express server works properly.
My rewrite rules

RewriteEngine On
RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} -f [OR]   
RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} -d
RewriteRule ^ - [L]

RewriteRule ^ /index.html

It means if I have rewrite rule I got parse error, like this

ERROR Error: Uncaught (in promise): e: {"headers":{"normalizedNames": 
{},"lazyUpdate":null},"status":200,"statusText":"OK","url"