Pending migration alert during app startup about cli

[ephys]

We're actually planning on rewriting the CLI from scratch, so it's unlikely that we'll do much on this repository anymore

[ephys]

Moved to the CLI repo because the core library is not aware of the migrations (it is entirely a cli concern). We could definitely add a cli subcommand that checks this, that you could use in your start command

[ephys]

This is strongly related to the --dry-run flag: #219

[svkrclg]

No, IMO. I'm talking about a logic that will terminate the app during bootup when there is a pending migration.

[ephys]

This is something you'll need to run before you boot your app and decide whether the app may boot based on the exit status of the cli. The core library, which you use in your app, has no knowledge of migrations. This is because you can use any migration tool, you're not limited to the sequelize cli.

Alternatively you can use child_process.exec to run the relevant cli command from inside your app.

Depending on how --dry-run is designed, it could cover both use cases. I did say "strongly related", not "the same as", we could also decide to go for a --check-no-pending-migrations flag or similar.

[svkrclg]

Thanks for explanation and it make sense now. Should I start working on this feature?