prosemirror-flat-list/src/utils/set-list-attributes.ts

Powerful list support for ProseMirror

import type { Transaction } from 'prosemirror-state'

import type { ListAttributes } from '../types'

import { isListNode } from './is-list-node'
import { setNodeAttributes } from './set-node-attributes'

export function setListAttributes<T extends ListAttributes = ListAttributes>(
  tr: Transaction,
  pos: number,
  attrs: T,
): boolean {
  const $pos = tr.doc.resolve(pos)
  const node = $pos.nodeAfter

  if (node && isListNode(node)) {
    const oldAttrs: T = node.attrs as T
    const newAttrs: T = { ...oldAttrs, ...attrs }
    return setNodeAttributes(tr, pos, oldAttrs, newAttrs)
  }
  return false
}