How to access file-based config vars in app?

Hi,
I am trying to set file-based configs with a netlify.toml file. This is what I have right now:
[context.production]
environment = { GRAPHQL_SERVER_ADDRESS = “<PROD_URL>” }

[context.staging]
environment = { GRAPHQL_SERVER_ADDRESS = “<STAGING_URL>” }

How do I access these in my React code?

This article knows all and tells all, @thatgriffith :slight_smile: