How come in `./node_modules/googleapis` I see a `build/src` folder instead of a `src` folder

I have this new Ember project and I installed the google node sdk via npm install googleapis --save-dev. I then installed ember-cli-es6-transform in hopes of importing the es6 modules from the google api node client.

However I noticed in ./node_modules/googleapis there is a build/src folder instead of a src folder. In the Github repo, it's just a src folder. Why is this? This is causing my imports to be wonky while using ember-cli-es6-transform.

This is all that is in my devDependencies:

  "devDependencies": {
    "broccoli-asset-rev": "^2.4.5",
    "ember-ajax": "^3.0.0",
    "ember-cli": "~3.1.4",
    "ember-cli-app-version": "^3.0.0",
    "ember-cli-babel": "^6.6.0",
    "ember-cli-dependency-checker": "^2.0.0",
    "ember-cli-es6-transform": "^1.0.0",
    "ember-cli-eslint": "^4.2.1",
    "ember-cli-htmlbars": "^2.0.1",
    "ember-cli-htmlbars-inline-precompile": "^1.0.0",
    "ember-cli-inject-live-reload": "^1.4.1",
    "ember-cli-qunit": "^4.1.1",
    "ember-cli-sass": "^10.0.1",
    "ember-cli-shims": "^1.2.0",
    "ember-cli-sri": "^2.1.0",
    "ember-cli-uglify": "^2.0.0",
    "ember-data": "~3.1.0",
    "ember-export-application-global": "^2.0.0",
    "ember-load-initializers": "^1.0.0",
    "ember-maybe-import-regenerator": "^0.1.6",
    "ember-resolver": "^4.0.0",
    "ember-source": "~3.1.0",
    "ember-welcome-page": "^3.0.0",
    "eslint-plugin-ember": "^5.0.0",
    "googleapis": "^40.0.1",
    "loader.js": "^4.2.3",
    "sass": "^1.22.2"
  },