pnpm monorepo tutorial

jquery 1233 Questions I've also provided a repository on GitHub with some sample code from the examples. Requirements for a good workflow, Building a Node.js monorepo with Pnpm and Nx, CI/CD for Pnpm and Nx monorepo using Github actions, # all packages in subdirs of packages/ and test/, Testing localStorage exceptions with Cypress. Well, we could, but Nx provides a mechanism to define dependent tasks, so it detects whether any package have dependent tasks that should be executed before others, and it executes them in that case. We are going to create a repository containing two simple projects that theoretically would be published to NPM, and a project containing E2E tests of both packages integrated. # Get base branch name to compare with. Sep 12, 2022 Author KAITLIN BLOOM This month we released a fresh course covering Monorepos with pnpm made by Scott Tolinski! pnpm in action To make pnpm install dependencies in this repo, you'll need to create a pnpm-workspace.yaml in the root of the repo (it can be empty) and a .npmrc file with the following. However, it will be broken for consumers that pull it from a registry, since the dependency list is now incomplete so they have no way to download the new dependency. As a quick recap, in the previous post we finished with a monorepo containing two Node.js packages and one E2E testing project. It may have no sense in a real project, but it is useful for this example: Let's add also a new task dependency, so before running E2E tests it will also run the build script of all dependent projects. Inside a workspace, pnpm install installs all dependencies in all the projects. Related docs: https://pnpm.io/npmrc#node-linker Share Improve this answer Follow answered Oct 7 at 21:15 Zoltan Kochan 3,497 21 33 For example, let's add one script for running all unit tests of all packages in the workspace. This will be the root package.json for our PNPM monorepo. . I have created a scripts/print-affected-array.js script in the sample repository that gets the needed output, and thats what we are going to call from the pipeline, passing two arguments to it: the task to be executed and the base branch. Note that, depending whether the workflow is triggered by a pull request or not, we will get the information using different Github actions variables. Create a packages/sum-one/index.spec.js containing: And then add the script for running the test: Now, you can run the package unit tests script from the package folder: But we don't want to be moving from one folder to another to run our development scripts, right? It's a tool that I utilize every single day in my code base and have nothing but great things to say about it. As seen in the previous post, we are going to use Pnpm mainly to be able to link packages locally using its workspace feature. Lets say I want to install a package in a specific package in my monorepo, how do I do this from root? So, for running the unit:test script of the sum-two package we can do: Now we are able to run any package script from the root folder of our workspace using Nx. javascript 11423 Questions As the front end project is increasing, more and more projects start using monorepo. I hope to explain them in coming posts: Note: The examples of this post are available at this Github repository. pnpm + changesets works pretty well. Dig in! NX. If you want to disable this behavior, set the recursive-install setting to false. an iOS client and a web-application) These projects are most likely unrelated, loosely connected or can be connected by other means (e.g via dependency management tools) The repository is large in many ways: - Number of commits - Number of branches and/or . NX is an advanced set of extensible dev tools for monorepos, with a strong emphasis on modern full-stack web technologies. Now if you check the directory of bar, youll see a node_modules there as well, with a single symlink called is-negative. Requirements for a good workflow, Building a Node.js monorepo using Pnpm and Nx, CI/CD for Pnpm and Nx monorepo using Github actions. . A: Ive been using this monorepo set up for a little while and Im just shocked a lot of people arent using it because its so nice and easy. You can learn more about the nx interface in its API reference page. The configuration could be improved in order to let Nx know the type of each project for adding more features like architecture boundaries using eslint, etc., but this, among other lot of things that obviously can be improved, is out of the scope of this post. json 300 Questions At that moment, a PR would be opened to main, and once it passed the checks and it is merged, a new release would be created by tagging the main branch. It will contain some Nx basic configuration: As we have not installed Nx globally, we need to define a script in our workspace package.json file to allow running its commands. They can still re-publish the post if they are not suspended. For the moment we will only add a "shortcut" or "alias" to the nx command, but later we will add specific scripts for running usual development tasks. (needs.test-e2e-windows.result == 'success' || needs.test-e2e-windows.result == 'skipped'), # Publish all packages in the workspace which version still does not exist, command for listing the affected projects, Why a monorepo? Both of them are executed using multiple Node.js versions. It is very similar to the one running the unit tests, but now we are going to execute it using only the two latest Node.js versions: At this point, the workflow is almost ready. In this post we have seen how to build a continuous integration workflow for a Pnpm and Nx monorepo using Github actions. We can add branch protection rules in order to require status checks to pass before merging. NOTE: If you are using a Pnpm version lower than 7.0, you should add an extra -- to the Pnpm commands before the Nx arguments: pnpm nx affected -- --target=test:unit. Now we have two package.json files in the repository. Turborepo is a high-performance build system for JavaScript and TypeScript codebases. echo "::set-output name=test-unit::$(node scripts/print-affected-array.js test:unit origin/${{needs.branch-info.outputs.base-branch-name}})" 10 forks Releases No releases published. This is a step-by-step tutorial, but if you want to have all the code available, all of the examples are in this Github repository. node.js 1112 Questions We will name sum-two to our new package, and it will depend on sum-one: Here is the content of the packages/sum-two/package.json file. Unfortunately, using NextJS inside a monorepo takes a little bit of setup. Modify the targetDependencies property in the nx.json file as in: Now, we are ready to install the dependencies of the new project, reset the nx cache (this is recommended when adding a new project) and run the E2E tests: We can also run the Nx graph command to see how our dependencies graph has changed after adding this new project: You may have noticed that Nx does not recognize the sum-e2e project as of e2e type. So did I. Web developer since 2002, working as a front-end specialist since 2009, and as a front-end architect since 2014. It will ignore the skipped matrixes, because sometimes no unit-test matrix will be created, or no test-e2e will be executed, etc. Now we are going to install Nx because it provides the other requirements that we saw in the previous post: Nx can also be installed globally, but I prefer to install it as a project dependency in order to define a specific version, so the same version is always used in all different local and remote environments. As a tip, you can add your own branch name to the list of branches in the workflow for testing it without opening a PR. But in order to create dynamic steps in the Github workflow, it would be better if we get the list as a stringified array, because this way we can use the Github actions fromJson expression. Why? This is a step-by-step guide, but you can directly check the repository code while reading for a faster approach. We did a little Q&A with Scott, the author. This can be achieved using a bash script in the workflow itself, or using any other type of script at your convenience, so for brevity I will omit the code in this post. In the previous chapter of this series of posts, we analyzed the reasons for using a monorepo to maintain many Node.js dependent packages, and the requirements to have a good development and continuous integration workflow. We will install Jest in the workspace (as mentioned above, it is a devDependency, so we don't have to install it on every single package): The -wD in the example means "Install it in the workspace, as a devDependency". but note that the dependencies of each package (those required to work once they are published) must remain on their own package.json files. It is probably also handy to initialize a new Git repository such that we can commit and backup things as we progress in the setup: One for testing and another one for the deployment. You do everything with pnpm except bumping versions in the monorepo, which is done by https://github.com/atlassian/changesets pnpm with Rush is also a popular choice. We will use it to get the list of projects in which each specific task should be executed. To speed up your tasks by leveraging Nx's powerful scheduling and caching capabilities. First, a monorepo is: Definitions vary, but we define a monorepo as follows: The repository contains more than one logical project (e.g. # pnpm-workspace.yaml packages: - "admin" - "client" - "shared" What is a monorepo and why is it useful? No packages published . This way we can configure the number of max parallel tasks to be executed also in the workflow configuration, and, depending on the number of projects, and the heavy the tasks are, we can adjust the parameters to get the workflow finished as fast as possible. pnpm run build pnpm run start. Create a .npmrc in the root of your monorepo with the following setting: node-linker=hoisted Remove node_modules and run pnpm install. Templates let you quickly answer FAQs or store snippets for re-use. A: [I thought] heres the thing that people arent talking about enough and arent using enough, and that people might not know exists. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise DEV Community 2016 - 2022. A monorepo is a single repository that is used to manage multiple projects. mkdir pnpm-mono cd pnpm-mono pnpm init. It provides lots of options for filtering projects, enabling/disabling parallel executions, etc. ajax 197 Questions Check the Require status checks to pass before merging option and add a new status check for the build-finished job: Now, every time a pull request is created it will require the build-finished job to be finished before allowing to merge it. Thats why we are going to use Github matrixes and jobs to distribute the tasks. All commands run through root; Use in host, hook up my monorepo to render run commands; Filter and recursive "install:all": "pnpm recursive install",

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