Not the answer you're looking for? In my app I populate the MatIconRegistry with icons that every app needs. Important: This article is written for Angular and Angular CLI 14 and higher. Where in the cochlea are frequencies below 200Hz detected? @Mike what "singleton: true" is used for ? Each webpack build can be a host, which is a container to load other builds. Module Federation is really clever when it comes to auto-detecting details and compensating for version mismatches. Why does it matter that a group of January 6 rioters went to Olive Garden for dinner after the riot? Laberweinting Weather Forecasts. Assigning a new port for ng serve so that several projects can be served simultaneously. It is possible to nest a container. I'll do my best to explain my setup.. Real sorry about how long this is going to be. 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. Creating a federated UI library this way works really well, and something that I feel could be quite advantageous for larger teams working with Single Page Applications wanting to have an option to NPM or the like. Low-level concepts We distinguish between . It only contains stuff to control module federation. Data Protectin. This simplifies the use of module federation and the resulting source code, which does not require additional microfrontend frameworks. Make sure you've structured your shared config correctly in webpack.config.ts. The shared library contains code and application state we want to share across the site. Hence, Module Federation can decide on the versions to use and actually load them. However, as the CLI shields webpack from us, we need a custom builder. This is a typical pattern when using Module Federation. Would it be illegal for me to act as a Civillian Traffic Enforcer? Module Federation is a type of JavaScript architecture I invented and prototyped. 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. Not the answer you're looking for? both app.component.ts files are identical. I might not be understanding the question tho. While this doent seem to make a lot of sense at first glance, its a typical pattern you find in Module Federation-based applications. Create a new runtime chunk with the specified name. How to help a successful high schooler who is failing in college? This is a tiny file generated by webpack when building the remote. For example, you have to ensure that the components that are only loaded at runtime and that were not yet known when compiling also interact as desired. This hint allows webpack to reject the shared module if version is not valid (defaults to true when local fallback module is available and shared module is not a singleton, otherwise false, it has no effect if there is no required version specified). But have you had a look into your main.ts? 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. Manfred Steyer Trainer and Consultant with focus on Angular With Module Federation you can share not just modules, but other file types. "singleton:true" shares the same instance of the shared module across your federated modules. In this post we'll look into how we can use Module Federation to create a federated UI library to share with multiple teams. I prefer women who cook good food, who speak three languages, and who go mountain hiking - what if it is a woman who only has one of the attributes? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. main renders modules from the remote menu and a module from the appropriate micro frontend, in this illustration subscriptions. 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. The above configuration shows how to expose two different files. Other than the more tradtional static imports, dynamic imports are asynchronous. 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. react, react-dom). 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. The first HomeComponent exposes a single Angular Component file while the second ShellModule exposes a module. As mentioned above, the usage of shareAll allows for a quick first setup that "just works". The Microfrontend Revolution: Module Federation with Angular, Angular Workshop Structured Introduction, 3 days or 4 days (depending on time model), Design with System: Scalable Design Systems with Storybook and Angular, Reactive Angular Architectures with RxJS and NGRX (Redux), Professional NGRX: Advanced Topics & Best Practices, The Refurbished HttpClient in Angular 15 Standalone APIs and Functional Interceptors, Angular Elements: Web Components with Standalone Components, The Solution: Easier and More Secure With Authentication Gateways, The Microfrontend Revolution: Module Federation in Webpack 5, Building A Plugin-based Workflow Designer With Angular and Module Federation, Getting Out of Version-Mismatch-Hell with Module Federation, Using Module Federation with (Nx) Monorepos and Angular, Pitfalls with Module Federation and Angular, Multi-Framework and -Version Micro Frontends with Module Federation: Your 4 Steps Guide, Module Federation with Angulars Standalone Components. 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. Eg. If we skipped strictVersion or set it to false, webpack would only emit a warning at runtime. All of this was done by the @angular-architects/module-federation plugin. Step 5: Add a Shared Library to Hold Module Federation Operation. The Angular team has adapted the HttpClient for the new standalone components. 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. Should we burninate the [variations] tag? The code you normally find in the file main.ts was moved to the bootstrap.ts file loaded here. Most importantly, Webpack 5 has a new feature, Module Federation, which allows multiple webpack builds to work together. One also has to deal with possible version conflicts. Case Studies A Blog Utilizing This Websites Modules For getting started, we need to tell the CLI to use module federation when building them. I hereby agree that software architect can process my email address for the purpose of sending the newsletter. This must be because the shared services had 'unshared' dependencies. Is cycling an aerobic or anaerobic exercise? Short story about skydiving while on a time dilation drug. Find centralized, trusted content and collaborate around the technologies you use most. It allows webpack to replace lower matching versions, but not higher. Then with the help of my co-creator and the founder of Webpack it was turned into one of the most exciting features in the Webpack 5 core (there's some cool stuff in there, and the new API is really powerful and clean). Subscribe to our newsletter to get all the information about Angular. According to which criteria can we sub-divide a huge application into micro frontends? The setup is rather straightforward and enables dynamic imports from other micro frontends in runtime. 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. 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. Why are only 2 out of the 3 boosters on Falcon Heavy reused? To get started, you can just "ng add" it to your projects: If you use Nx, you should npm install the library separately. This configuration compiles and runs, but mfe1 instantiates a new GlobalService. Also, be careful that all provided and fallback modules will always be downloaded when this hint is enabled. Common dependencies like Angular or the Auth0 library can be shared and hence don't need to be loaded several times. That solved the issues I was having with Webpack being unable to find modules at compile time. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. The next article in this series provides a solution for this: Dynamic Federation. Stack Overflow for Teams is moving to its own domain! Can an autistic person with difficulty making eye contact survive in the workplace? 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. To learn more, see our tips on writing great answers. On this occasion,. 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. How to generate a horizontal histogram with words? rev2022.11.3.43005. 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. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. would this work across different repositories, where configuring the 'paths' inside of tsconfig wouldn't be able to point to a path in a repository recieving a service? This hint will allow webpack to include the provided and fallback module directly instead of fetching the library via an asynchronous request. 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. Step 1 will be done during the chunk loading. All of this was done by the @angular-architects/module-federation plugin. I'm using (at the moment) Angular 11.0.0-next and Webpack 5, which is only available as an opt-in with ng11 . The version of the provided module. He studied part-time IT and IT marketing in Graz and part-time computer science in Hagen and completed a four-semester training in the field of adult education. TL;DR. Make sure any module dependencies your shared services have are also shared. While this helps to quickly get a working setup, it might lead to too much shared dependencies. Installing a custom builder making webpack within the CLI use the generated. This is particularly important in angular for things like global auth services. Its just a virtual path pointing to another project. 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. There are three ways to specify the versions of shared libraries. Is a planet-sized magnet a good interstellar weapon? Why is SQL Server setup recommending MAXDOP 8 here? If the letter V occurs in a few native words, why isn't it included in the Irish Alphabet? This provided module also acts as fallback module if no shared module is found in the shared scope or version isn't valid. In other words, this allows to use this shared module in the initial chunk. Does activating the pump in a vacuum chamber produce movement of the air inside? For this property, The generated configuration uses the helper method shareAll that is basically sharing all the dependencies found in your package.json. This way, evaluation order is unaffected by converting a module from local to remote or the other way around. 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. Is it considered harrassment in the US to call a black man the N-word? 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 . 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. The provided module that should be placed in the shared scope. So, if you run into this issue take a look at your dependencies and make sure you're sharing everything you need. SQL PostgreSQL add attribute from polygon to all points inside polygon but keep all points not just those that fall inside polygon. 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. 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. We have to use those aliases, but tell webpack where to find the libraries by using the import option. 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. Make sure any module dependencies your shared services have are also shared. My second problem was that I was attempting to share common facades that depended on common data access services. Make sure you've structured your shared config correctly in. 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. What is the function of in ? 2021-08-08: Updated for Angular CLI 12.x Besides using Angular, the result looks similar as in the previous article: The loaded microfrontend is shown within the red dashed border. A later section here addresses this. However, it might lead to too much shared bundles. 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. Correct handling of negative chapter numbers, next step on music theory as a guitar player, Water leaving the house when water cut off. I have a Git Repo that illustrates my problems.. For more details on the differences/ migration to Angular 14 please see this migration guide. Making statements based on opinion; back them up with references or personal experience. I am basing my work on Manfred Steyer's Module Federation Plugin Example repo, which uses Angular CLI. Since Angular 14.2, it's possible to use Standalone Components as Angular Elements. I'm going to note that my project is an NX Monorepo using Angular CLI. I can't figure out how to share a singleton service from a shared local Angular library between my two apps. This syntax allows you to share libraries with package name only. Where the library would be, in the first place? The reason is that Module Federation needs to decide which version of a shared library to load. There are three ways to specify the versions of shared libraries. This file is where we add in the wiring for the hosts, remotes, shared code, and shared dependencies in the Module Federation plugin. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Connect and share knowledge within a single location that is structured and easy to search. Some libraries use a global internal state (e.g. As shared dependencies cannot be tree shaken and by default end up in separate bundles that need to be loaded, you might want to optimize this behavior by switching over from shareAll to the share helper: So far, weve seen that Module Federation is a strightforward solution for creating Micro Frontends on top of Angular. Should we burninate the [variations] tag? 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. Connect and share knowledge within a single location that is structured and easy to search. Shared Configs map.config.json contains a global object of local and remote endpoint URLs. Please note that the webpack.config.js is only a partial webpack configuration. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. These separate builds should not have dependencies between each other, so they can be developed and deployed individually. Array syntax This syntax allows you to share libraries with package name only. Making statements based on opinion; back them up with references or personal experience. Finding features that intersect QgsRectangle but are not equal to themselves using PyQGIS. Module Federation Sharing Library Code; . What is the effect of cycling on weight loss? 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. This is probably an argument for keeping minimal shared state/dependencies across your apps. There is no trace of this in the source code of the host or the remote. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Whats New in our Module Federation Plugin 14.3? What is the deepest Stockfish evaluation of the standard initial position that has ever been done? Found footage movie where teens get superpowers after getting struck by lightning? The overhead to maintain "shared component libraries" and sync versions and experiences across micro-frontends is also greatly reduced. How to interpret the output of a Generalized Linear Model with R lmer. Is there a trick for softening butter quickly? The promise of rapid delivery of performant product-based user experiences has never been more achievable through module federation. 2021-12-23: Updated for Angular CLI 13.1.x I use following approach with requiredVersion: In order to see efficiency in bundle, you can turn on. That'll be great! https://github.com/webpack/webpack/issues/15164. I'm working on a new project using Angular 11 and Webpack 5. Module Federation allows loading Micro Frontends at runtime. One application can dynamically run code from another bundle or build, on the client and the server. The consumer in this sense is the federated project (shell or Micro Frontend) or a shared library. While specifying the remote entrys URL that way is convenient for development, we need a more dynamic approach for production. I can't figure out how to share the same instance of an injectable service across federated Angular modules in a CLI project. Like always, the code for this example is at my Github in case you feel like checking that out. Most configuration code, including Webpack configurations, can be bundled and reused as . The dynamic import makes Module Federation to load the shared libs. When webpack goes to bundle the code it needs to be able to find it. Module Federation is a Webpack 5 super power plugin which offers an improved approach to micro frontends in both developer experience and application performance. rev2022.11.3.43005. 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). In this section, you are going to create a shared library where you will add the logic to dynamically load federated modules when needed. Make sure you have a fitting version if you try out the examples outlined here! Array syntax This syntax allows you to share libraries with package name only. It uses the router to lazy load a FlightModule: However, the path mfe1/Module which is imported here, does not exist within the shell. Best way to get consistent results when baking a purposely underbaked mud cake. Lets start with the shell which would also be called the host in module federation. (The value for this hint defaults to the property name.). 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. to share layout components or formatting utilities. 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. 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. The issue of dependencies is the most important thing here, because it's harder to debug. In C, why limit || and && to evaluate to booleans? Module Federation Sharing Library Code Building & Deploying Summary Overview As discussed in the previous article, the first step in updating our architecture involved the consolidation of. This is a part of our architecture which we're not completely sure scales well. This makes complete sense but i can't get it to work, If I reference the local library this way I inevitably end up with errors during builds, The examples I posted are simplified. Big thanks to Zack Jackson, the mastermind behind Module Federation, who helped me bypassing some pitfalls. See the latest Laberweinting, Bavaria, Germany RealVue weather satellite map, showing a realistic view of Laberweinting, Bavaria, Germany from space, as taken from weather satellites. The requested shared module is looked up under this key from the shared scope. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. More information about dealing with version mismatches can found in a further article of this series. The property shared defines the npm packages to be shared between the shell and the microfrontend(s). Sharing my data access layer along with my facade layer resulted in shared singletons throughout my app. Take a look at the above Webpack configuration files for each project. Stack Overflow for Teams is moving to its own domain! In order to make module federation work, we need to bootstrap the app asynchronously. But, if I put eager=false, how can the code retrieve the library when needed? However, this approach also puts more responsibility on the developers. Webpack Module Federation finally provides a simple and solid solution for this. How do I simplify/combine these two methods for finding the smallest and largest int in an array? However, it can . Each project exposes code that will be consumed by others. The package name that is used to determine required version from description file. We've also used the main federated module as a shared library for all of our applications. Start by creating a new project folder with the following package.json to allow us to run our two SPAs at the same time: I'm going to note that my project is an NX Monorepo using Angular CLI. The reason for this duplication is that Module Federation generates a bundle per shared library per consumer. In this post we'll look into how we can use Module Federation to create a federated UI library to share with multiple teams. In my project I have some library aliases like the following, To make this work in my webpack config. In the webpack.config.js, we can add the Module Federation Plugin in our plugins section. Thanks for contributing an answer to Stack Overflow! Workshop with strategies for your large and long-lasting business applications. This hint only allows a single version of the shared module in the shared scope (disabled by default). The structure will be different . The rest is generated by the CLI as usual. Native Federation is a **framework- and tooling-agnostic** implementation of Module Federation. What is the best way to show results of a multiple-choice quiz where multiple options may be right? Webpack Module Federation Unsatisfied version 11.x.x of shared singleton module @angular/common (required ^7.2.0) 2 Module federation display a blank page for a few seconds when a remote is unavailable 2022-06-06: Updated for Angular CLI 14.x and above. To improve performance, libraries can be shared and strategies for dealing with incompatible versions can be configured. Generally speaking, we're using this to point to code that is bundled into our app by Webpack. This prevents several issues. When you apply the same sort of diagram shown above for this app, it looks like this: . There are no errors or anything -- things just don't work like you expect. To learn more, see our tips on writing great answers. 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. 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