临时解决方案：
修改node_modules/react-native-root-siblings/lib/AppRegistryInjection.js
将import EventEmitter from 'react-native/Libraries/EventEmitter/EventEmitter';
改为import EventEmitter from 'react-native/Libraries/vendor/emitter/EventEmitter';
备注：RN的这个版本移动了emitter包的位置

But How can I modify in native library??

@magicismight Please make your root siblings module work with RN 0.48+, so we don't have to fork your stuff and create confusion. It will also be the answer to this bug report :)

For the non chinese folks like me, @zylibin solution worked for me:

Find the file node_modules/react-native-root-siblings/lib/AppRegistryInjection.js

And replace line: import EventEmitter from 'react-native/Libraries/EventEmitter/EventEmitter';
With import EventEmitter from 'react-native/Libraries/vendor/emitter/EventEmitter';

please use my fork in your package.json, this might be the most easy solution, just a work around:

"react-native-root-toast": "github:pilipa-cn/react-native-root-toast#v2.2.0"

Is there any official fix for this?

No, like @beansoftapp offered, and what more people are doing, which leads to a lot of (unmaintained) forks: fork your own, or use somebody else's fork (like @beansoftapp's)

That is why, ultimately, most open source advocates will gently keep nudging the original maintainer to update the package. So pretty please @magicismight ?

I totally agree with @Morriz, so i'd like to talk how to fix this issue without touch the original source code at all. This bug occured as the author has specific the dependencies like this:

"dependencies": {
        "react-native-root-siblings": "^1.2.1"
    }

so the ^ will not lock the version of react-native-root-siblings, but the author released another new version of react-native-root-siblings which only works on latest react native. If you are using RN 0.46 ~ 0.48, you can run yarn first, then edit the yarn.lock file, and commit this file to your code base and other team member will using the same version as you, they just need do run a yarn. Now search and edit version number to this:

react-native-root-siblings@^1.2.1:
  version "1.2.1"
  resolved "https://registry.yarnpkg.com/react-native-root-siblings/-/react-native-root-siblings-1.2.1.tgz#6f8d0e711dbf9aef4e57e73aea751372b5aefcff"
  dependencies:
    static-container "^1.0.0"

react-native-root-toast@^1.1.2:
  version "1.1.2"
  resolved "https://registry.yarnpkg.com/react-native-root-toast/-/react-native-root-toast-1.1.2.tgz#1f5a2dad70743a9ab6b5d44674c8dda578523961"
  dependencies:
    react-native-root-siblings "^1.2.1"

in package.json:
"react-native-root-toast": "1.1.2"
Then you must run yarn again, this will make sure your local node_modules using the correct version.

For react-native >= 0.47 you can use react-native-root-toast@2.2.0, or using 1.2.1 for lower version.

@magicismight so it might be kindly enough for you to add supported RN version range in the readme file. In fact this issue was first found after Nov 25, our CI breaks nightly build, after that I added yarn.lock file to our code base.

Any proper solution found?