slate/packages/slate-react/src/hooks/use-slate-selection.tsx

import { BaseSelection, Range } from 'slate'

import { useSlateSelector } from './use-slate-selector'

/**
 * Get the current slate selection.
 * Only triggers a rerender when the selection actually changes
 */
export const useSlateSelection = () => {
  return useSlateSelector(editor => editor.selection, isSelectionEqual)
}

const isSelectionEqual = (a: BaseSelection, b: BaseSelection) => {
  if (!a && !b) return true
  if (!a || !b) return false
  return Range.equals(a, b)
}