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The section shared points to the libraries shared with the shell. In my previous post .css-q395r8{transition-property:var(--chakra-transition-property-common);transition-duration:var(--chakra-transition-duration-fast);transition-timing-function:var(--chakra-transition-easing-ease-out);cursor:pointer;-webkit-text-decoration:none;text-decoration:none;outline:2px solid transparent;outline-offset:2px;color:hsl(208, 99%, 44%);}.css-q395r8:hover,.css-q395r8[data-hover]{-webkit-text-decoration:underline;text-decoration:underline;}.css-q395r8:focus,.css-q395r8[data-focus]{box-shadow:var(--chakra-shadows-outline);}Micro frontends with Module Federation and Webpack 5, we looked at how to utilise the new Module Federation plugin available with Webpack 5 (MF) to chop up a SPA into multiple, independently owned micro-frontends. https://github.com/webpack/webpack/issues/15164. next step on music theory as a guitar player. Singleton or modules without fallback will throw, otherwise fallback is used, // the required version of the shared module, Move common modules into the parent chunk, Passing the minChunks property a function, Combining implicit common vendor chunks and manifest file, Multiple compressed versions of assets for different algorithm. We will be using a yarn mono-repo structure here for simplicity, but the idea behind Module Federation is to allow teams to operate autonomously, so in the real world, your SPA's would most likely live in their own repositories. In this post we'll look into how we can use Module Federation to create a federated UI library to share with multiple teams. Package - @angular-architects/module-federation - npmmirror Let's explore some of the patterns and use-cases for module federation. Also, be careful that all provided and fallback modules will always be downloaded when this hint is enabled. . webpack - The ModuleFederationPlugin allows build to provide or consume For this property, The generated configuration uses the helper method shareAll that is basically sharing all the dependencies found in your package.json. Where the library would be, in the first place? There are three ways to specify the versions of shared libraries. Its just a virtual path pointing to another project. The setting requiredVersion: 'auto' is a little extra provided by the @angular-architects/module-federation plugin. To improve performance, libraries can be shared and strategies for dealing with incompatible versions can be configured. In my app I populate the MatIconRegistry with icons that every app needs. https://github.com/webpack/webpack/issues/15164, Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned. The code you normally find in the file main.ts was moved to the bootstrap.ts file loaded here. shared Why is proving something is NP-complete useful, and where can I use it? angular - Module Federation Shared Services - Stack Overflow I can't figure out how to share a singleton service from a shared local Angular library between my two apps. In the webpack.config.js, we can add the Module Federation Plugin in our plugins section. Tutorial - A Guide to Module Federation for Enterprise We've also used the main federated module as a shared library for all of our applications. Create a new runtime chunk with the specified name. ModuleFederationPlugin | webpack I'm using (at the moment) Angular 11.0.0-next and Webpack 5, which is only available as an opt-in with ng11 . It only contains stuff to control module federation. So, if you run into this issue take a look at your dependencies and make sure you're sharing everything you need. I hereby agree that software architect can process my email address for the purpose of sending the newsletter. As mentioned above, the usage of shareAll allows for a quick first setup that "just works". Big thanks to Zack Jackson, the mastermind behind Module Federation, who helped me bypassing some pitfalls. This is a part of our architecture which we're not completely sure scales well. Manfred Steyer Trainer and Consultant with focus on Angular Sharing my data access layer along with my facade layer resulted in shared singletons throughout my app. Hopefully not overly so, but here is a link to a repo that shows the issue. evaluating the module (synchronous). This is post 2 of 10 in the series Module Federation, 2020-10-13: Updated to use webpack 5 and Angular CLI 11.0.0-next.6. 2022 Moderator Election Q&A Question Collection, Could not find module "@angular-devkit/build-angular", WP5 Module Federation: Singleton instantiated multiple times, Webpack Module Federation Unsatisfied version 11.x.x of shared singleton module @angular/common (required ^7.2.0), Module federation display a blank page for a few seconds when a remote is unavailable. This is particularly important in angular for things like global auth services. There is no trace of this in the source code of the host or the remote. Laberweinting, Germany Hourly Weather Forecast | Weather Underground How to help a successful high schooler who is failing in college? a quick note about @angular/material/icon share config. If the shell, for instance, is using version 12.0 and one of the micro frontends is already built with version 12.1, it will decide to load the latter one. The . Module Federation Motivation Multiple separate builds should form a single application. So this is actualy Application 1 webpack config, as it exposes the Form component, and if any other Application like Application 2 wants to consume this component, it also needs to use the Module Federation Plugin but in order to consume the component. Unable to share singleton from local Angular Library #473 - GitHub By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. One application can dynamically run code from another bundle or build, on the client and the server. How can we avoid pitfalls when working with Module Federation. How to help a successful high schooler who is failing in college? Found footage movie where teens get superpowers after getting struck by lightning? Setup Since this post is about showcasing a component UI library, I am going to skip some of the setup boilerplate explained in my last post and walk you through what we're working with. 2022 Moderator Election Q&A Question Collection, Angular CLI Project Missing Module Errors After Git Pull, Could not find module "@angular-devkit/build-angular", WP5 Module Federation: Singleton instantiated multiple times, Webpack Module Federation Unsatisfied version 11.x.x of shared singleton module @angular/common (required ^7.2.0), Error when adding Datepicker to a remote component in module federation, React Module Federation - Uncaught Error: Shared module is not available for eager consumption: webpack/sharing/consume/default/react/react. I see "constructed SharedService" logged on app load, then again as soon as the remote module is loaded. This way, evaluation order is unaffected by converting a module from local to remote or the other way around. The version of the provided module. In this section, you are going to create a shared library where you will add the logic to dynamically load federated modules when needed. live preview Check out this live module federation example on StackBlitz. Module Federation | webpack I can't figure out how to share the same instance of an injectable service across federated Angular modules in a CLI project. rev2022.11.3.43005. However, when dealing with it, several additional questions come in mind: Our free eBook (about 100 pages) covers all these questions and more: The implementation of microfrontends has so far involved numerous tricks and workarounds. Like always, the code for this example is at my Github in case you feel like checking that out. Step 5: Add a Shared Library to Hold Module Federation Operation. What is the deepest Stockfish evaluation of the standard initial position that has ever been done? To ease the TypeScript compiler, we need a typing for it: Also, we need to tell webpack that all paths starting with mfe1 are pointing to an other project. Module Federation Sharing Library Code; . However, it can . By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. A later section here addresses this. How to generate a horizontal histogram with words? Lets start with the shell which would also be called the host in module federation. Best way to get consistent results when baking a purposely underbaked mud cake. Module Federation is a type of JavaScript architecture I invented and prototyped. When webpack goes to bundle the code it needs to be able to find it. For getting started, we need to tell the CLI to use module federation when building them. Why does the sentence uses a question form, but it is put a period in the end? Laberweinting, Bavaria, Germany Satellite Weather Map | AccuWeather The overhead to maintain "shared component libraries" and sync versions and experiences across micro-frontends is also greatly reduced. However, it might lead to too much shared bundles. Module Federation - webpack 5 Documentation - TypeError I have setup a project with module federation: As you can see each micro-frontend has the angular core shared (along with other libs). Micro frontends with Module Federation | by Helene Grini | Bredvid - Medium While this doen't seem to make a lot of sense at first glance, it's a typical pattern you find in Module Federation-based applications. That solved the issues I was having with Webpack being unable to find modules at compile time. The issue of dependencies is the most important thing here, because it's harder to debug. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Laberweinting area. I'm working on a new project using Angular 11 and Webpack 5. Should we burninate the [variations] tag? One also has to deal with possible version conflicts. react, react-dom). Shared library in module federation: how to provide it? How to Build a Micro Frontend with Webpack's Module Federation Plugin sites contains both the consuming app and the ui library, Consumer "Home" application using the shared ui library and aliases it as, Header component example using the federated, "concurrently \"wsrun --parallel start\"", "rm -fr node_modules sites/**/node_modules && yarn run clean:dist", "ui@http://localhost:5000/remoteEntry.js", "ui@http://localhost:3001/remoteEntry.js", Showcases all available UI components by exposing micro-frontend called. Furthermore, if you're on NX, your linting will complain if you import from absolute or relative library paths, so there is a disconnect between what Webpack wants, and what nx/tslint wants. Generally speaking, we're using this to point to code that is bundled into our app by Webpack. I didn't think to share the data access services because they are stateless, but this caused my MFEs to instantiate new singletons. Making statements based on opinion; back them up with references or personal experience. It is possible to nest a container. However, this approach also puts more responsibility on the developers. is a trainer and consultant with a focus on Angular. Step 1 will be done during the chunk loading. Since Angular 14.2, it's possible to use Standalone Components as Angular Elements. This hint only allows a single version of the shared module in the shared scope (disabled by default). Asking for help, clarification, or responding to other answers. Make sure you've structured your shared config correctly in. More information about dealing with version mismatches can found in a further article of this series. Hence, we need to move the bootstrap logic into a new bootstrap.ts and import it via a dynamic import in the main.ts. 2021-08-08: Updated for Angular CLI 12.x 2021-12-23: Updated for Angular CLI 13.1.x There are three ways to specify the versions of shared libraries. 2022-06-06: Updated for Angular CLI 14.x and above. In other words, this allows to use this shared module in the initial chunk. However, as the CLI shields webpack from us, we need a custom builder. This is a typical pattern when using Module Federation. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. All of this was done by the @angular-architects/module-federation plugin. Making statements based on opinion; back them up with references or personal experience. It allows webpack to replace lower matching versions, but not higher. Case Studies A Blog Utilizing This Websites Modules This can be done in the generated webpack.config.js: The remotes section maps the path mfe1 to the separately compiled microfrontend or to be more precise: to its remote entry. This is only needed when the package name can't be automatically determined from request. That'll be great! Workshop with strategies for your large and long-lasting business applications. Pitfalls with Module Federation and Angular - ANGULARarchitects Saving for retirement starting at 68 years old. Now on to the actual UI library exposed by the UI team through MF, btw - read my previous post about micro-frontends SPAs using MF if you feel you need more examples to follow along. Correct handling of negative chapter numbers, next step on music theory as a guitar player, Water leaving the house when water cut off. This file is where we add in the wiring for the hosts, remotes, shared code, and shared dependencies in the Module Federation plugin. The Microfrontend Revolution: Module Federation with Angular Low-level concepts We distinguish between . Stack Overflow for Teams is moving to its own domain! The provided module that should be placed in the shared scope. Webpack loads it at runtime to get all the information needed for interacting with the microfrontend. I'll do my best to explain my setup.. Real sorry about how long this is going to be. I highly recommend you checking out Jack Herringtons's Youtube Video "How to build a resilient shared Header/Footer using Module Federation", where he walks you through the process of creating a resilient federated header / footer using a mix of techniques (including MF), custom React error boundaries and Yarn workspaces. The Angular team has adapted the HttpClient for the new standalone components. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Besides using Angular, the result looks similar as in the previous article: The loaded microfrontend is shown within the red dashed border. In this training, you will learn from well-known insiders and experts from the very beginning, using many examples, how to successfully develop modern applications with. Does the Fog Cloud spell work in conjunction with the Blind Fighting fighting style the way I think it does? Do you have a full example you can share? The reason for this duplication is that Module Federation generates a bundle per shared library per consumer. Other than the more tradtional static imports, dynamic imports are asynchronous. Shared library in module federation: how to provide it? Start by creating a new project folder with the following package.json to allow us to run our two SPAs at the same time: Module Federation Architecture | Rangle.io Why does it matter that a group of January 6 rioters went to Olive Garden for dinner after the riot? I tried to follow another example by ScriptedAlchemy, but I can't figure out how to make it work. There is active webpack bug regarding that. This provided module also acts as fallback module if no shared module is found in the shared scope or version isn't valid. For example, it is likely that components that were compiled with completely different Angular versions will not work together at runtime. While this helps to quickly get a working setup, it might lead to too much shared dependencies. It uses the router to lazy load a FlightModule: However, the path mfe1/Module which is imported here, does not exist within the shell. These separate builds should not have dependencies between each other, so they can be developed and deployed individually. Data Protectin. Array syntax This syntax allows you to share libraries with package name only. I use following approach with requiredVersion: In order to see efficiency in bundle, you can turn on. The requested shared module is looked up under this key from the shared scope. Where in the cochlea are frequencies below 200Hz detected? It is also interesting that the microfrontends are loaded by Webpack under the hood. The microfrontend also referred to as a remote with terms of module federation looks like an ordinary Angular application. The combination of singleton: true and strictVersion: true makes webpack emit a runtime error when the shell and the micro frontend(s) need different incompetible versions (e. g. two different major versions). The promise of rapid delivery of performant product-based user experiences has never been more achievable through module federation. Not the answer you're looking for? If the letter V occurs in a few native words, why isn't it included in the Irish Alphabet? This configuration compiles and runs, but mfe1 instantiates a new GlobalService. There are three ways to specify the versions of shared libraries. The helper function share used in this generated configuration replaces the value 'auto' with the version found in your package.json. While this doent seem to make a lot of sense at first glance, its a typical pattern you find in Module Federation-based applications. Find centralized, trusted content and collaborate around the technologies you use most. Despite having remote and host containers initialize at runtime, you can still leverage all of Module Federation's current features (library negotiation, etc.) Take a look at the above Webpack configuration files for each project. TL;DR. Make sure any module dependencies your shared services have are also shared. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. The shell configuration has two main objectives. Make sure you've structured your shared config correctly in webpack.config.ts. With Module Federation you can share not just modules, but other file types. I don't know how it would find files that are not local to the project that is being built, unless you included it as an NPM package or something. Find centralized, trusted content and collaborate around the technologies you use most. I'm going to note that my project is an NX Monorepo using Angular CLI. It looks up the used version in your package.json. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. The rest is generated by the CLI as usual. We have to use those aliases, but tell webpack where to find the libraries by using the import option. At this point you should have a fairly good grasp on how both vendor libraries and custom libraries are shared in the module federation system. . Just as last time we're using a monorepo for convenience and an app shell containing two routes - the base route and the ui catalog route. LO Writer: Easiest way to put line of words into table as rows (list). Module Federation This syntax allows you to share libraries with package name only. This article brings Angular into play and shows how to create an Angular-based microfrontend shell using the router to lazy load a separately compiled, and deployed microfrontend. (The value for this hint defaults to the property name.). Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Evergreen Design System/Component Library An evergreen remote is one of the simplest types of federated applicationa shared remote, such as a Design System or a Component library, gets independently released, which automatically updates it for all consumers. Module Federation is a Webpack 5 super power plugin which offers an improved approach to micro frontends in both developer experience and application performance. Can an autistic person with difficulty making eye contact survive in the workplace? The package name that is used to determine required version from description file. Now, if I put eager=true it works but the library gets inside of the remoteEntry.js file which is bad as the size will increase (of course). I started from a working example, then generated a new lib (ng generate library mdmf-shared) and exposed a single Injectable from the library's public-api.I import this service into my shell and my microfrontend with no . Whats New in our Module Federation Plugin 14.3? Some libraries use a global internal state (e.g. I'm using (at the moment) Angular 11.0.0-next and Webpack 5, which is only available as an opt-in with ng11 at the time of writing. To get started, you can just "ng add" it to your projects: If you use Nx, you should npm install the library separately. Thanks for contributing an answer to Stack Overflow! First of, lets look at the remote and the exposes properties of the UI team top to bottom: BaseStyles - e.g styles for wrapping a page, base fonts etc Components/Utils - a react specific prop sanitation utility. Common dependencies like Angular or the Auth0 library can be shared and hence don't need to be loaded several times. Webpack Module Federation finally provides a simple and solid solution for this. Since this post is about showcasing a component UI library, I am going to skip some of the setup boilerplate explained in my last post and walk you through what were working with. The ModuleFederationPlugin allows a build to provide or consume modules with other independent builds at runtime. The structure will be different . This syntax allows you to provide additional hints to each shared package where you define the package name as the key, and the value as an object containing hints to modify sharing behavior. To learn more about Module Federation, review the technology's website. This is a tiny file generated by webpack when building the remote. The package @angular-architects/module-federation provides such a custom builder. Micro Frontends with Module Federation in Monorepo - Michal Zalecki While specifying the remote entrys URL that way is convenient for development, we need a more dynamic approach for production. Connect and share knowledge within a single location that is structured and easy to search. Step 2 will be done during the module evaluation interleaved with other (local and remote) modules. Eg. Thanks for contributing an answer to Stack Overflow! The above configuration shows how to expose two different files. Webpack 5 Module Federation aims to solve the sharing of modules in a distributed system, by shipping those critical shared pieces as macro or as micro as you would like. What is the function of in ? Module Federation allows loading Micro Frontends at runtime. This is the foundation of micro frontends. It either compiles and runs and creates two instances, or it fails to compile citing a missing module depending on how i mess up my configuration I'm sure. Creating a Module federated UI library with Webpack 5 Micro Frontends Using Webpack 5 Module Federation Subscribe to our newsletter to get all the information about Angular. Native Federation is a **framework- and tooling-agnostic** implementation of Module Federation. Also, the microfrontend can be used without the shell: The case study presented here assumes that both, the shell and the microfrontend are projects in the same Angular workspace. Short story about skydiving while on a time dilation drug. Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned. How do I simplify/combine these two methods for finding the smallest and largest int in an array? I can't find any "exposes" section for libraries. Is there a trick for softening butter quickly? rev2022.11.3.43005. My second problem was that I was attempting to share common facades that depended on common data access services. This approach is good for prototyping, but it will not allow you to scale to large production environment given that libraries like react and react-dom will require additional requirements. To look up the needed meta data for this decision, Module Fedaration squeezes itself into dynamic imports like this one here. To learn more, see our tips on writing great answers. Thus, it is critical to have only one instance of the library running at a time. The consumer in this sense is the federated project (shell or Micro Frontend) or a shared library. Module Federation is really clever when it comes to auto-detecting details and compensating for version mismatches. both app.component.ts files are identical. Most importantly, Webpack 5 has a new feature, Module Federation, which allows multiple webpack builds to work together. According to which criteria can we sub-divide a huge application into micro frontends? It has routes defined within in the AppModule: In order to make it possible to load the FlightsModule into the shell, we also need to expose it via the remotes webpack configuration: The configuration shown here exposes the FlightsModule under the public name Module. While its obvious that the project shell contains the code for the shell, mfe1 stands for Micro Frontend 1. The reason is that Module Federation needs to decide which version of a shared library to load. Hence, Module Federation can decide on the versions to use and actually load them. Laberweinting Weather Forecasts. Each webpack build can be a host, which is a container to load other builds. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. More details on this can be found in another article of this series. This prevents several issues. Revolutionizing Micro Frontends with Webpack 5, Module Federation and For more details on the differences/ migration to Angular 14 please see this migration guide. Check out this live module federation example on StackBlitz. The next article in this series provides a solution for this: Dynamic Federation. The dynamic import makes Module Federation to load the shared libs. Stack Overflow for Teams is moving to its own domain! Micro Frontends with Angular, Module Federation, and Auth0 The reason is that Module Federation needs to decide which version of a shared library to load. What is the effect of cycling on weight loss? The first HomeComponent exposes a single Angular Component file while the second ShellModule exposes a module. Should we burninate the [variations] tag? The upcoming Webpack 5 will bring lots of goodies to improve both developer experience and build time, but none of them is as ground-breaking as the new Module Federation.. Up until today, the implementation of micro front-end strategy seems to only bring increased complexity and inconsistent performance where the bad outweighs the good.
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