Cannot find module ‘source-map’ after installing: `npm install @types/webpack`

Do you want to request a feature or report a bug?
bug

What is the current behavior?
Cannot find module ‘source-map’ error when running tsc after installing:
npm install @types/webpack
If the current behavior is a bug, please provide the steps to reproduce.
Cannot find module ‘source-map’ error when running tsc after installing:
npm install @types/webpack

What is the expected behavior?
I want to have full intellisense support for my webpack.config.js, therefore I install @types/webpack.
No errors when running tsc afterwards.
If this is a feature request, what is motivation or use case for changing the behavior?

Please mention other relevant information such as the browser version, Node.js version, webpack version and Operating System.
Win 10 x64
VsCode 1.20

"dependencies": {
    "@types/node": "^9.4.5"
  },
  "devDependencies": {
    "@types/jquery": "^3.3.0",
    "@types/lodash": "^4.14.102",
    "html-webpack-plugin": "^2.30.1",
    "jquery": "^3.3.1",
    "lodash": "^4.17.5",
    "ts-loader": "^3.5.0",
    "typescript": "^2.7.1",
    "webpack": "^3.11.0"
  },

Issue posted in TS repo