Describe the bug

When using the Swap plugin, it's impossible to cancel a swap once the swap threshold has been met for an item. You can't drag the item back to its original place to prevent a swap. This happens with or without the revertOnSpill: true option.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://sortablejs.github.io/Sortable/#swap
2. Drag "Item 1" to h

• User case:
  • for programmers new to the library to get some context on how to add customization functions and styles
• Implementation ideas:
  • Thinking of creating a markdown doc or webpage or something

Describe the bug
When using move to lower the position of an element, adding 1 to the index does not work, and 2 needs to be added.

To Reproduce
I implemented the following code to move the element position up and down under the ROOT, but the onDown function did not move the element down.

  const {
    actions: { move, delete: deleteNode },
    query,
  } = useEditor();

Convert the source file to typescript, which will be compiled in the rollup build step.
While we currently use .ts files, typehinting etc. is not used in the files.

If you want to help:
Just start adding typehints to any file that is still missing them or improve the ones that already have them. Feel free to send a PR for files even if only a part of them is converted.