AsyncStorage返回Promise不为null

Question

我正在我的Android模拟器中运行此程序，但是在实际设备上却出现了同样的情况。该密钥不存在，但仍返回一些奇怪的承诺，如下所示。我很困惑！

准确执行文档中所说的内容：

https://github.com/react-native-community/react-native-async-storage/blob/master/docs/API.md

import AsyncStorage from '@react-native-community/async-storage';

getData = async () => {
  try {
    const value = await AsyncStorage.getItem("keydoesnotexist")
    console.log(value)
    if(value !== null) {
      return value
    }

  } catch(e) {
    console.error(e)
  }
}

值记录为：

{"_40":0,"_65":0,"_55":null,"_72":null}

"@react-native-community/async-storage": "^1.2.4",