npm install -g firebase-tools

firebase login

firebase init

? Which Firebase CLI features do you want to set up for this folder? Press Space to select features, then Enter to confirm your choices. 
 ◯ Database: Deploy Firebase Realtime Database Rules
 ◉ Firestore: Deploy rules and create indexes for Firestore
 ◉ Functions: Configure and deploy Cloud Functions
 ◉ Hosting: Configure and deploy Firebase Hosting sites
❯◉ Storage: Deploy Cloud Storage security rules

? Please select an option: (Use arrow keys)
❯ Use an existing project 
  Create a new project 
  Add Firebase to an existing Google Cloud Platform project 
  Don't set up a default project 

? Select a default Firebase project for this directory: (Use arrow keys)
❯ fir-travis-ci-example-f33dd (firebase-travis-ci-example) 

=== Firestore Setup

Firestore Security Rules allow you to define how and when to allow
requests. You can keep these rules in your project directory
and publish them with firebase deploy.

? What file should be used for Firestore Rules? firestore.rules

Firestore indexes allow you to perform complex queries while
maintaining performance that scales with the size of the result
set. You can keep index definitions in your project directory
and publish them with firebase deploy.

? What file should be used for Firestore indexes? firestore.indexes.json

=== Functions Setup

A functions directory will be created in your project with a Node.js
package pre-configured. Functions can be deployed with firebase deploy.

? What language would you like to use to write Cloud Functions? TypeScript
? Do you want to use TSLint to catch probable bugs and enforce style? Yes
✔  Wrote functions/package.json
✔  Wrote functions/tslint.json
✔  Wrote functions/tsconfig.json
✔  Wrote functions/src/index.ts
✔  Wrote functions/.gitignore
? Do you want to install dependencies with npm now? Yes

=== Hosting Setup

Your public directory is the folder (relative to your project directory) that
will contain Hosting assets to be uploaded with firebase deploy. If you
have a build process for your assets, use your build's output directory.

? What do you want to use as your public directory? public
? Configure as a single-page app (rewrite all urls to /index.html)? No
✔  Wrote public/404.html
✔  Wrote public/index.html

=== Storage Setup

Firebase Storage Security Rules allow you to define how and when to allow
uploads and downloads. You can keep these rules in your project directory
and publish them with firebase deploy.

? What file should be used for Storage Rules? storage.rules

i  Writing configuration info to firebase.json...
i  Writing project information to .firebaserc...
i  Writing gitignore file to .gitignore...

✔  Firebase initialization complete!

import * as functions from 'firebase-functions';

// // Start writing Firebase Functions
// // https://firebase.google.com/docs/functions/typescript
//
export const helloWorld = functions.https.onRequest((request, response) => {
 response.send("Hello from Firebase!");
});

{
  "firestore": {
    "rules": "firestore.rules",
    "indexes": "firestore.indexes.json"
  },
  "functions": {
  },
  "hosting": {
    "public": "public",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ]
  },
  "storage": {
    "rules": "storage.rules"
  }
}

language: node_js
node_js:
  - "10"
script:
  - npm --prefix "./functions" install
  - npm --prefix "./functions" run lint
  - npm --prefix "./functions" run build
deploy:
  provider: firebase
  skip_cleanup: true
  token:
    secure: $FIREBASE_TOKEN

firebase login:ci

✔  Success! Use this token to login on a CI server:

1/detaRAmEnatokundesUcbfT2-EYYrkAFU5fiM-N6bdB