![]() ![]() We’ll be hosting our application on Heroku and we’ll configure CircleCI to deploy our application automatically to our Heroku URL whenever it is updated. ![]() CircleCI is free for open source projects (including projects that are public on GitHub). Whenever you commit code into your repo, it creates and runs a pipeline which you create in a config.yml file and gives you a status report on your test. Fork and Clone our example repo for this project.ĬircleCI is a CI/CD service that can be integrated into your repository (GitHub, GitHub Enterprise, or Bitbucket).Connect your GitHub account to CircleCI.Create GitHub and Heroku accounts if you do not have either already.We’ll also be making use of CircleCI for CI/CD and Heroku as our hosting service.īefore we get started, here are some basic setup steps: For this demo, it is assumed that you have basic knowledge of git and GitHub. Now that we understand the basics of CI and CD, we can put our knowledge into action to create a CI/CD pipeline for a React application. Creating a CI/CD pipeline for a React app This could be a production environment or a staging environment used for live testing. Once your unit and integration tests have passed and the branch has been merged with the main shared branch, CD deploys your application to your target environment automatically. CD ensures the automatic deployment of your application immediately after a new feature or branch has been successfully merged. Continuous deliveryĪfter continuous integration comes, unsurprisingly, continuous delivery (CD). You can get started with writing tests in React here. It’s important to note that a good CI system is extremely dependent on the tests written by the developer. The team is then immediately notified of the status of the tests and depending on the result, the changes can then be merged into the main work. When a developer checks in their updated work (for example, through a pull request), those changes are validated by automatically building the application and running different tests, (usually both unit and integration tests), to ensure the changes haven’t broken the application. Continuous integrationĬI creates a consistent, automated way of integrating code changes multiple members of a dev team into one central repository or project.Īs stated earlier, large projects usually require developers working on different features and branches which are then merged into one shared branch. ![]() To refresh your memory, continuous integration (CI) and continuous delivery (CD) are a series of automated steps employed in DevOps. Basics: Understanding CI and CDīefore we get started with our demo, let’s review the basics of CI and CD. Thankfully, these hassles can easily be avoided, or at least minimized, with a robust CI/CD pipeline. Handling instances like merging branches and integrating new changes into an existing codebase can become what some developers refer to as “integration hell”. Though many hands can make light work, in web development, many individual codes can make for a massive headache. When building React applications, especially larger apps, you will often work with a team of various developers on different Git branches and in different environments (staging, development, production, etc.). ![]() CI/CD and React: Create a pipeline using Heroku and CircleCI Sijuade Ajagunna Follow Software developer, alt-rock freak. ![]()
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