docs(next): Migration instruction

[ieedan]

Adds documentation for migrating from Svelte 4 -> Svelte 5. Aims to fix #1437.

• Needed to add a <PMRemove/> component for the docs

Opening this as a draft right now to collect feedback so let me know what you think.

Right now this PR assumes #1421 merges with update changes otherwise add command should be used.

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[huntabyte]

Thanks for this. Just a few minor things here, I can update them later if you don't have the time atm!

[ieedan]

Thanks should be back to fix these in around 15 minutes

[JYLN]

This is a great guide! I do have one mild suggestion for wording within this guide. Instead of saying "We got rid of svelte-headless-table in favor of @tanstack/table-core", I suggest stating "svelte-headless-table has been removed in favor of @tanstack/table-core." This cleans up the verbiage a little bit in my opinion

[ieedan]

This is a great guide! I do have one mild suggestion for wording within this guide. Instead of saying "We got rid of svelte-headless-table in favor of @tanstack/table-core", I suggest stating "svelte-headless-table has been removed in favor of @tanstack/table-core." This cleans up the verbiage a little bit in my opinion

I agree that sounds better.

[ieedan]

@huntabyte should I just go ahead and change the instruction to use the add command instead? If #1421 merges I can come back and fix that another time.

[ieedan]

@huntabyte should I just go ahead and change the instruction to use the add command instead? If #1421 merges I can come back and fix that another time.

Good to go now!

[huntabyte]

Thank you!

[ieedan]

For whatever reason #1437 wasn't closed by this PR.