How can I store an access token in MemorySessionStorage?

[Mikheull]

Hello everyone, I am currently developing an application that will interact with another service via its API.

I need to store the Access token I receive to use it in my requests. But I can't figure out how to do that on Shopify.

I think I need to store in MemorySessionStorage but I can't figure it out yet.

I started the Shopify app with the shopify-app-template-node on their Github.

Thank you for your help