@portabletext/editor/src/internal-utils/selection-block-keys.ts

Portable Text Editor made in React

import {getBlockKeyFromSelectionPoint} from '../selection/selection-point'
import type {EditorSelection} from '../types/editor'

export function getSelectionBlockKeys(selection: EditorSelection) {
  if (!selection) {
    return undefined
  }

  const anchorBlockKey = getBlockKeyFromSelectionPoint(selection.anchor)
  const focusBlockKey = getBlockKeyFromSelectionPoint(selection.focus)

  if (anchorBlockKey === undefined || focusBlockKey === undefined) {
    return undefined
  }

  return {
    anchor: anchorBlockKey,
    focus: focusBlockKey,
  }
}