Is there any way to keep a person authenticated with firebase across subdomains

Question

I use firebase for authentication on my website and I want to keep the users auth session active across subdomains.

Unfortunately, firebase uses Local Storage to sto

Answer 1

I used NGINX to load diffrent web apps which want to share same firebase auth which works out of box in firebase if domain or sub domain is same.

server {
root /var/lib/jenkins/workspace/app/dist;
index index.html index.htm index.nginx-debian.html;
server_name app.com; # example

location /app1 {
        alias /var/lib/jenkins/workspace/app1/dist;
        try_files $uri $uri/ =404;
}

location /app2 {
        alias /var/lib/jenkins/workspace/app2;
        try_files $uri $uri/ =404;
} 

location /static {
        alias /var/lib/jenkins/workspace/build/static;
        try_files $uri $uri/ =404;
}

location ~ /\.ht {
    deny all;
}

listen 80;
listen [::]:80; 

}