- #MONOREPO NPM WORKSPACES HOW TO#
- #MONOREPO NPM WORKSPACES INSTALL#
- #MONOREPO NPM WORKSPACES UPDATE#
- #MONOREPO NPM WORKSPACES CODE#
#MONOREPO NPM WORKSPACES CODE#
But that's the trade off of using a shared code/DRY principle in the first place.Already-tested code is skipped in this continuous integration pipelineīy skipping untouched code, you can scale out monorepos, obtain test results faster, and save money in the process. It's be possible though to make a separate build of a Docker image for each of the apps and run them in independent containers.Ī risk of regression would still be present in this scenario too as updating the shared code alters all artifacts. I am assuming all apps would sit n a single Docker image running from a single nginx cotainer, i.e.
For only the modified app will create a new CSS/JavaScript bundle. Then every app in the monorepo would have to be tested for regressions by a QA team.īut if a newly merged PR contains only code for a single app then it's perfectly safe to deploy it.
#MONOREPO NPM WORKSPACES UPDATE#
Most of the time each team will update just their app leaving a shared UI code unchanged.Ī deployment would only be a problem if the shared code had been modified. It's not a problem given that builds are so quick thanks to the optimised Dockerfile. Multiple teams can create as many PRs to the monorepo as they want and each commit within the PRs will trigger a new build in a CI. I hope this article fills this gap for the time being.Ĭheck out my gif-css-animation-monorepo repository that shows how I made the animation for this article using an HTML page. I wish it had been emphasised in release notes and that the npm's help examples were a bit more complex. Only the modules that will be exported need to be there ( npm 7 workspaces are mainly providing discovery for the modules. Recognize also that and weren't defined in the monorepo's package.json workspaces property. For example you cannot run a script inside a workspace from the monorepo's root folder.
Just remember that npm has a different philosophy than yarn. With the newest npm 7 and its support of workspaces it is now possible to have a monorepo without a need of any external tools like or nx. Insert below inside your root folder's package.json to set up a monorepo.Įnter fullscreen mode Exit fullscreen modeīelow I'm editing the common UI component UIElement and upon saving both React apps are automatically refreshed with the updated component: This is the most crucial part of the whole setup. I am prefixing all packages' names with they will be distinctive from the official npm registry. And I want both apps to hot reload whenever I edit a file inside the UI library.īy independent I mean that app1 doesn't know anything about app2 and vice-versa.īelow is a setup that is compatible with npm 7 workspaces.
Let's say I want to build two independent React apps called app1 and app2 that will use a common component from a common UI library called ui.
I just want that nice button in my app too You can jump from project to project without switching windows on your desktop. It would be nice to extract that UI in form of React components and prepare building blocks that are ready to use for all members of the team.Īpart from that it's just more convenient to have all your source files opened in a single IDE instance. Imagine a team that develops two React apps that shares some common UI elements like inputs, selectors, accordions, etc. The most common reason to set up a monorepo is to streamline work within a dev team that maintains multiple apps that are using a shared piece of code, for example a common User Interface library.
#MONOREPO NPM WORKSPACES HOW TO#
Read on and you'll find out how to use npm 7 workspaces in a real-world scenario and learn that using workspaces the npm's way is very different to yarn's.Ī monorepo is a term describing a single git repository that contains many projects.
#MONOREPO NPM WORKSPACES INSTALL#
To use yarn or pnpm you have to take an additional step and install them first. Why is it big news? Because npm is the only package manager that comes bundled with every NodeJS. This month npm has released a major version of their package manager npm 7.
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