Is there a way to use environment vars in my eas.json for running locally?

I use eas.json to add my different environment vars for my builds. Is there a way to use the same file to be able to run locally in Metro? Currently I am using a .env locally and eas.json for my builds, but I would like to have all of this work in the same location.

If those envs are used only to set configuration in app.json, you can convert it to app.config.js and embed all values inside it. This way you would have only one env in eas.json e.g. ENVIRONMENT and just select other values based on that. With this solution you will still need to specify that one environment variable when running other commands.