Strange behavior with TextSelection

1

I created a custom command to select all text and bound it to Mod-a.

keymap({
  'Mod-a': (state, dispatch) => {
    const from = 0
    const to = state.doc.content.size
    const selection = TextSelection.create(state.doc, from, to)
    const tr = state.tr.setSelection(selection)
    
    dispatch(tr)
    
    return true
  }
})

This works fine most of the time. But there is one single edge case.

  1. select all text with Mod-a
  2. type a
  3. select all text with Mod-a again
  4. type a
  5. see error: RangeError: Position -1 out of range

This only happens if I replace a single letter with the same single letter. There is no error if I replace a with b for example.

Video:

ezgif-3-1d66780d05

Glitch demo:

I think this is a bug or have I missed something obvious?

2

TextSelection endpoints must be in textblock positions, so you’re creating an invalid text selection here, which is causing the crash.

3

Yes, I’m using this which is working fine:

keymap({
  'Mod-a': (state, dispatch) => {
    const from = TextSelection.atStart(state.doc).from
    const to = TextSelection.atEnd(state.doc).to
    const selection = TextSelection.create(state.doc, from, to)
    const tr = state.tr.setSelection(selection)
    
    dispatch(tr)
    
    return true
  }
})

Just stumbled across this weird error described above and thought it’s a bug.

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