Watch mode for package command

[dummdidumm]

Describe the problem

Some people use SvelteKit to create a package but use/test this package in a different environment than the routes folder in the same project. For them to get updates, they have to run the package command over and over again or write a custom script for that, which might not work for windows users. Details: sveltejs/component-template#29 (comment)

Describe the proposed solution

Add a --watch option to the package command which rebuilds the package without deleting its top level folder

Alternatives considered

Don't add it, but at least don't delete the top level folder (only empty its content) so that the changes are properly picked up by watchers.

Importance

nice to have

Additional Information

No response

[mechadragon01]

I have tried using the svelte-package --watch command and it works to detect changes.

• Successfully get dist directory from my file changes in src/lib.

But it crashes on any changes with syntax issues which renders it kind of useless for dev purposes. Can the --watch flag be more robust in the sense it doesn't crash on any non-perfect change or you don't need to fix the syntax immediately.