Ionic prod build broken for web fix

Ionic 2+ build unexpectedly won't build with --prod flag (npm run ionic:build --prod) for web? Fix.

Problem

Randomly my Ionic app would not build for web in --prod mode (ionic serve was fine). I was getting the error:

typescript error: Cannot find type definition file for '@types'

Solution

1. Add to tsconfig.json file compilerOptions branch:

  "compilerOptions": {
    ...
    "types": [
      "node"
    ]
    ...
  },

Now when you run 'npm run ionic:build --prod', it should build without crapping out.

D