createViewModel脏状态异常：恢复原值后仍显示为脏

使用createViewModel处理状态时遇到异常：

• 将address属性修改为其他值时，isDirty能正确判定为true，符合预期
• 但将address恢复为初始旧值后，isDirty仍然显示为true，不符合预期

已显式将address属性设置为observable.struct，确保对比的是属性值而非引用，当前使用版本为mobx@6.10.0和mobx-utils@6.0.8。

复现代码 #

const { autorun, action, observable } = require("mobx");
const { createViewModel } = require("mobx-utils");

function Todo() {
  const person = observable({ name: 'tarun', address: { firstLine: 'this is the main address', secondLine: 'second thing' } }, { address: observable.struct });

  const personViewModel = createViewModel(person);

  autorun(() => {
    console.log('personViewModel?.address.firstLine', personViewModel?.address.firstLine);
    console.log('personViewModel?.address.secondLine', personViewModel?.address.secondLine)

    console.log('personViewModel.isDirty', personViewModel?.isDirty)
  })

  const update = action((address) => {
    personViewModel.address = address;
  })

  return {
    update
  }
}

const { update } = Todo();

// isDirty变为true，符合预期
update({ firstLine: 'edit first 1', secondLine: 'edit second 1' });

// 重置address后，isDirty仍显示为true，不符合预期
update({ firstLine: 'this is the main address', secondLine: 'second thing' })

内容的提问来源于stack exchange，提问作者Tarun Singh