fix: update_branch with (anchor).data possible undefined on ios devices

[matteobattista]

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Playground

pnpm add https://pkg.pr.new/svelte@15851

[paoloricciuti]

I don't think this is not the right fix, data needs to be there during hydration, if it's not there we can't just return without doing anything. This is probably some extension messing with the dom or something similar.

If you do want to work on this we also need a test for it tho.

[matteobattista]

Hi @paoloricciuti,
the PR is related to this issue: #15819 maybe i can refactor with:
if (data === undefined) return;

[paoloricciuti]

Hi @paoloricciuti, the PR is related to this issue: #15819 maybe i can refactor with: if (data === undefined) return;

I'll try to take a look later, no tests are failing because generally the data it's there but I have the feeling that this will break in case there's malformed html...the app might render but the whole hydration mechanism will fail and it will be unresponsive.