Error: Cannot find module '@babel/core'
babel-loader@8 requires Babel 7.x (the package '@babel/core'). If you'd like to use Babel 6.x ('babel-core'), you should install 'babel-loader@7'.
  at Function.Module._resolveFilename (module.js:547:15)
  at Function.Module._load (module.js:474:25)
  at Module.require (module.js:596:17)
  at require (internal/module.js:11:18)
  ....

npm un babel-core
npm i -D @babel/core

ERROR in ./src/index.jsx
Module build failed (from ./node_modules/babel-loader/lib/index.js):
Error: Plugin/Preset files are not allowed to export objects, only functions.
...

npm:
- babel-preset-env
+ @babel/preset-env
- babel-preset-react
+ @babel/preset-react
- babel-preset-stage-0

.babelrc:
- "presets": ["react", "env", "stage-0", "mobx"]
+ "presets": ["@babel/preset-react", "@babel/preset-env", "mobx"]

ERROR in ./src/index.jsx
Module build failed (from ./node_modules/babel-loader/lib/index.js):
TypeError: this.setDynamic is not a function
  at PluginPass.pre
  ...

{
  "presets": ["@babel/preset-env", "@babel/preset-react", "mobx"],
  "plugins": [
    "@babel/plugin-proposal-object-rest-spread",
    "@babel/plugin-transform-runtime"
  ]
}

"devDependencies": {
  "@babel/core": "^7.1.0",
  "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
  "@babel/plugin-transform-runtime": "^7.1.0",
  "@babel/preset-env": "^7.1.0",
  "@babel/preset-react": "^7.0.0",
  "babel-loader": "^8.0.2"
  "babel-preset-mobx": "^2.0.0",
  ...
 },
 "dependencies": {
  "@babel/runtime": "^7.0.0",
  ...
 }