Maybe add a "on init" method for checking environment and other stuff

Feature Request

Is your feature request related to a problem? Please describe. For GitHub Enterprise usage, sometimes we want to check the environment before starting up the server. It’s good to know the problems right away.

Describe the solution you’d like Add an “on init” method that will run every time (or configurable) that users can define in the Application to do some health checking.

Describe alternatives you’ve considered Adding a script that npm run dev runs would also work, but doesn’t feel as clean.

Teachability, Documentation, Adoption, Migration Strategy Can probably simply document this the same way as any other Application API.

[gr2m]

In my case, that will be if I see GHE_HOST is set but no ACTOR_NAME found, I can immediately error out with a message telling the user running the GitHub Enterprise variant without setting the actor name is probably not going to work.

Why not do that in your app’s code?

module.exports = app => {
  if (process.env.GHE_HOST && !process.env.ACTOR_NAME) {
    throw new Error('`ACTOR_NAME` environment variable is not set')
  }
  // ...
}

[tianhaoz95]

I think you are right about why that wasn’t executed. Yes doing it in the top level app initiation works. Thanks!