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A monorepo template that solves all the monorepo issues through CI/CD, powered by Turborepo

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Monolitik

🚀 Powered by Turborepo

Motivation

Having the code split up in multiple repositories is definitely a good practice, having the backend and the frontend on their own repositories is certainly a clean approach. But this ends up complicating things for agile development, where prototypes need to ship fast, and this is even more noticeable in small development teams, where usually one person takes care of each side of the project, so having everything in one place ends up being for the best, everyone can easily know how things look like both in the backend and in the frontend, without having to head over to their Organization and look for the other side of the project, just to know what an API endpoint does.

About monorepos

Uber Technology Day: Monorepo to Multirepo and Back Again

Big JavaScript Projects - Code Sharing

Usage

There are 6 main packages in this monorepo:

  • backend

    • db: Prisma models & DB interface
    • api: REST API
  • frontend

    • landing: landing page
    • admin-dashboard: admin dashboard
    • ui-kit: reusable react components

You can interact with them through the following scripts:

"scripts": {
  "db": "yarn workspace db",
  "api": "yarn workspace api",
  "landing": "yarn workspace landing", 
  "a-d": "yarn workspace admin-dashboard", 
  "ui": "yarn workspace ui-kit" 
},

Examples

  • Run the api in dev mode:
yarn api dev
  • Adding the web3 and web3-utils dependencies to the api
yarn api add web3 web3-utils
  • Adding the db package to the api as a dependency
yarn api add "db@*"

Extra

_config

tsconfig: A collection of tsconfig files

  • base: Generic TS code
  • next: For NextJS apps
  • react-library: For React Apps and component libraries

linter-*: Presets for eslint rules and configuration

  • base: Generic rules
  • nest: For NestJS apps
  • next: For NextJS apps
  • react: For React Apps

If you want to create a new linter, duplicate one of the existing directories and override the index.js file as needed.

.platform: not really a package, but I didn't like having it in the root of the project. An elastic beanstalk-specific prebuild hook, that will install yarn and build the prisma client.

CI/CD

Github actions that'll run and check if your changes broke everything

env:
  TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
  TURBO_TEAM: ${{ secrets.TURBO_TEAM }}

Make sure to configurate your secrets and fill in the variables above. Guide

Talking about secrets, you should also add the following ones:

  • DATABASE_URL_PROD
  • DATABASE_URL_MOCK
  • AWS_ACCESS_KEY_ID
  • AWS_SECRET_ACCESS_KEY

Deployments

Deploy a microfrontend to a serverless

cd frontend/landing

Create a netlify.toml config file:

[build]
  ignore = "git diff --quiet HEAD^ . ../ui-kit/"
  command = "yarn build"
  publish = "build"

[build.environment]
  NETLIFY_USE_YARN = "true"

Install netlify

npm i -g netlify-cli
netlify init

Choose:

  1. Create and configure a new site
  2. Select your team
  3. Choose a site name
  4. Set the base directory to frontend/landing
  5. For build command, input yarn build
  6. For directory to deploy, choose the output directory that the build command generates. Nextjs outputs to .next and react does so to build. Following the landing example, you will input frontend/landing/build
  7. Leave blank for functions

Make sure to enable notifications in the site settings (in the netlify dashboard). That's it, every time you push to origin netlify will make a new deployment.

Deploy a service to Elastic Beanstalk

  1. Create a new app in EB, and set the DATABASE_URL environment variable
  2. Update ci-backend.yml,make build and deploy steps for the new service, for example:

At the end of build_test/steps, add:

- name: Build and test cart-service
  if: contains(needs.get_file_changes.outputs.all_changed_files, 'backend/cart-service/') || contains(needs.get_file_changes.outputs.all_changed_files, 'backend/db/')
  run:  yarn db build && yarn cart-service build

And then you can copy-paste the existing eb_deploy job, just replace it according to the parameters of the new service you want to create.

You should also play around with the conditional building and deployments for the affected services on push. At the time of writing this, the repo uses only one service (api), but for future releases it might include more.

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A monorepo template that solves all the monorepo issues through CI/CD, powered by Turborepo

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