Is there some easy way to get value of bind:value element in svelte?

E.g. this is the html that I have:

<input type="text" name="prop" bind:value="{model.subObject.subSubObject.subSubSubProp}">
<span class="error" data-error-for="prop"></span>

And js that I currently have:

let fields : NodeList = document.querySelectorAll('[data-error-for]');
fields.forEach((v,k) => {
  let nameOf = v.dataset['errorFor'];
  let n = document.getElementsByName(nameOf);
  //how to get here the value of `n.value` to be `model.subObject.subSubObject.subSubSubProp`
});

I do not need the real bound value, but actually the object path (e.g. above it would be model.subObject.subSubObject.subSubSubProp).