List out options for `npx sv migrate`

[sacrosanctic]

Expected

> npx sv migrate
( ) svelte-5
( ) svelte-4
( ) sveltekit-2
( ) ...

list of current commands: https://svelte.dev/docs/cli/sv-migrate#Migrations

Actual

> npx sv migrate
error: missing required argument 'migration'

[GauBen]

That would be awesome, especially if multiple migrations can be chosen and run in the correct order!

[manuel3108]

Running the migrations in the correct order brings other problems though. What if the first migration fails or introduces @migration-task? Only allowing the user to select one migration at a time would make stuff a lot easier.

[GauBen]

What if the first migration fails or introduces @migration-task?

git rebase offers a good example of what can be done, ux-wise:

• on the happy path, if all goes well, all commits (migrations) are applied in order
• if git encounters a conflict, it pauses and let the user handle it manually. sv could do the same: The svelte-5 migration requires manual action: look for "@migration-task" in your codebase and update the code. Once done, commit your changes and resume the migration train with "npx sv migrate migration1 migration2"

That may not be worth the work though

[sacrosanctic]

You'd still have to put them in the correct order. Will the devs guard against that too? Not worth the complexity in my opinion. Just a single select seems like a quick win.

[GauBen]

Will the devs guard against that too? Not worth the complexity in my opinion.

Each migration declares its dependencies (it already kind of does!) and svelte-migrate resolves the dependency tree to process the migrations in the right order. No need for the user to specify the migrations in the right order or to have guards this way.