Despite having remote and host containers initialize at runtime, you can still leverage all of Module Federation's current features (library negotiation, etc.) Saving for retirement starting at 68 years old. Sharing my data access layer along with my facade layer resulted in shared singletons throughout my app. Important: This article is written for Angular and Angular CLI 14 and higher. 18. Array syntax This syntax allows you to share libraries with package name only. The first HomeComponent exposes a single Angular Component file while the second ShellModule exposes a module. I had to share the @angular/material/icon specifically to share the singleton across every MFE. Such cases must be avoided with conventions or at least recognized as early as possible with integration tests. For more details on the differences/ migration to Angular 14 please see this migration guide. The helper function share used in this generated configuration replaces the value 'auto' with the version found in your package.json. In the webpack.config.js, we can add the Module Federation Plugin in our plugins section. 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. Thanks for contributing an answer to Stack Overflow! Workshop with strategies for your large and long-lasting business applications. More information about dealing with version mismatches can found in a further article of this series. Its just a virtual path pointing to another project. I'm going to note that my project is an NX Monorepo using Angular CLI. 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? When you apply the same sort of diagram shown above for this app, it looks like this: . I use following approach with requiredVersion: In order to see efficiency in bundle, you can turn on. However, it can . It uses the router to lazy load a FlightModule: However, the path mfe1/Module which is imported here, does not exist within the shell. This is the foundation of micro frontends. One also has to deal with possible version conflicts. 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. It allows webpack to replace lower matching versions, but not higher. Hence, Module Federation can decide on the versions to use and actually load them. There are three ways to specify the versions of shared libraries. The reason for this duplication is that Module Federation generates a bundle per shared library per consumer. This configuration compiles and runs, but mfe1 instantiates a new GlobalService. 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. This is only needed when the package name can't be automatically determined from request. Each project exposes code that will be consumed by others. evaluating the module (synchronous). is a trainer and consultant with a focus on Angular. To look up the needed meta data for this decision, Module Fedaration squeezes itself into dynamic imports like this one here. 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. The next article in this series provides a solution for this: Dynamic Federation. Step 2 will be done during the module evaluation interleaved with other (local and remote) modules. 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. 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. Is cycling an aerobic or anaerobic exercise? The shell configuration has two main objectives. I hereby agree that software architect can process my email address for the purpose of sending the newsletter. The overhead to maintain "shared component libraries" and sync versions and experiences across micro-frontends is also greatly reduced. TL;DR. Make sure any module dependencies your shared services have are also shared. For getting started, we need to tell the CLI to use module federation when building them. These separate builds should not have dependencies between each other, so they can be developed and deployed individually. 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. 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. 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 setting requiredVersion: 'auto' is a little extra provided by the @angular-architects/module-federation plugin. The setup is rather straightforward and enables dynamic imports from other micro frontends in runtime. If you're using path aliases in your tsconfig, you are used to importing local libraries like "@common/my-lib", but you can't share modules by alias in your webpack config. Other than the more tradtional static imports, dynamic imports are asynchronous. To learn more about Module Federation, review the technology's website. Best way to get consistent results when baking a purposely underbaked mud cake. Not the answer you're looking for? 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. I might not be understanding the question tho. 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. Found footage movie where teens get superpowers after getting struck by lightning? I'm working on a new project using Angular 11 and Webpack 5. Correct handling of negative chapter numbers, next step on music theory as a guitar player, Water leaving the house when water cut off. Shared Configs map.config.json contains a global object of local and remote endpoint URLs. While its obvious that the project shell contains the code for the shell, mfe1 stands for Micro Frontend 1. In C, why limit || and && to evaluate to booleans? This prevents several issues. (The value for this hint defaults to the property name.). This is often known as Micro-Frontends, but is not limited to that. To learn more, see our tips on writing great answers. Can an autistic person with difficulty making eye contact survive in the workplace? Why is SQL Server setup recommending MAXDOP 8 here? In my project I have some library aliases like the following, To make this work in my webpack config. In this post we'll look into how we can use Module Federation to create a federated UI library to share with multiple teams. The above configuration shows how to expose two different files. The Angular team has adapted the HttpClient for the new standalone components. There are three ways to specify the versions of shared libraries. This provided module also acts as fallback module if no shared module is found in the shared scope or version isn't valid. How to generate a horizontal histogram with words? You may not even realize that you have two instances of a shared service at first. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Each webpack build can be a host, which is a container to load other builds. What is the effect of cycling on weight loss? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. In this section, you are going to create a shared library where you will add the logic to dynamically load federated modules when needed. 2022-06-06: Updated for Angular CLI 14.x and above. Does activating the pump in a vacuum chamber produce movement of the air inside? All of this was done by the @angular-architects/module-federation plugin. The provided module that should be placed in the shared scope. It looks up the used version in your package.json. 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. Make sure you've structured your shared config correctly in webpack.config.ts. Where in the cochlea are frequencies below 200Hz detected? What is the best way to show results of a multiple-choice quiz where multiple options may be right? I didn't think to share the data access services because they are stateless, but this caused my MFEs to instantiate new singletons. However, this approach also puts more responsibility on the developers. 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 code you normally find in the file main.ts was moved to the bootstrap.ts file loaded here. Big thanks to Zack Jackson, the mastermind behind Module Federation, who helped me bypassing some pitfalls. react, react-dom). There are no errors or anything -- things just don't work like you expect. I can't figure out how to share a singleton service from a shared local Angular library between my two apps. 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. Manfred Steyer Trainer and Consultant with focus on Angular 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). 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. To improve performance, libraries can be shared and strategies for dealing with incompatible versions can be configured. 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. 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. What is the function of in ? 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? 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). How to interpret the output of a Generalized Linear Model with R lmer. Make sure you have a fitting version if you try out the examples outlined here! Step 1 will be done during the chunk loading. Short story about skydiving while on a time dilation drug. @Mike what "singleton: true" is used for ? main renders modules from the remote menu and a module from the appropriate micro frontend, in this illustration subscriptions. Why does it matter that a group of January 6 rioters went to Olive Garden for dinner after the riot? Assigning a new port for ng serve so that several projects can be served simultaneously. The package @angular-architects/module-federation provides such a custom builder. What is the deepest Stockfish evaluation of the standard initial position that has ever been done? live preview Check out this live module federation example on StackBlitz. Is there a trick for softening butter quickly? Make a wide rectangle out of T-Pipes without loops, Replacing outdoor electrical box at end of conduit, What does puncturing in cryptography mean. The version of the provided module. So, if you run into this issue take a look at your dependencies and make sure you're sharing everything you need. I have a Git Repo that illustrates my problems.. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Asking for help, clarification, or responding to other answers. There are three ways to specify the versions of shared libraries. This syntax provides you more control over each shared library in which you can define package name as the key and version (semver) as the value. The promise of rapid delivery of performant product-based user experiences has never been more achievable through module federation. Most configuration code, including Webpack configurations, can be bundled and reused as . In other words, this allows to use this shared module in the initial chunk. . Native Federation is a **framework- and tooling-agnostic** implementation of Module Federation. Make sure any module dependencies your shared services have are also shared. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. Would it be illegal for me to act as a Civillian Traffic Enforcer? Connect and share knowledge within a single location that is structured and easy to search. Data Protectin. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Asking for help, clarification, or responding to other answers. This is a tiny file generated by webpack when building the remote. How to help a successful high schooler who is failing in college? To learn more, see our tips on writing great answers. Let's explore some of the patterns and use-cases for module federation. Hence, we need to move the bootstrap logic into a new bootstrap.ts and import it via a dynamic import in the main.ts. Eg. Please note that the webpack.config.js is only a partial webpack configuration. The reason is that Module Federation needs to decide which version of a shared library to load. The requested shared module is looked up under this key from the shared scope. There is active webpack bug regarding that. 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 . Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. This is a part of our architecture which we're not completely sure scales well. Should we burninate the [variations] tag? Some libraries use a global internal state (e.g. Finding features that intersect QgsRectangle but are not equal to themselves using PyQGIS. LO Writer: Easiest way to put line of words into table as rows (list). 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). The reason is that Module Federation needs to decide which version of a shared library to load. Step 5: Add a Shared Library to Hold Module Federation Operation. Shared library in module federation: how to provide it? We have to use those aliases, but tell webpack where to find the libraries by using the import option. 2021-12-23: Updated for Angular CLI 13.1.x This hint only allows a single version of the shared module in the shared scope (disabled by default). Is a planet-sized magnet a good interstellar weapon? The issue of dependencies is the most important thing here, because it's harder to debug. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. The shared library contains code and application state we want to share across the site. This is probably an argument for keeping minimal shared state/dependencies across your apps. 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). 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. 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. I'm going to note that my project is an NX Monorepo using Angular CLI. While this helps to quickly get a working setup, it might lead to too much shared dependencies. I can't find any "exposes" section for libraries. In this post we'll look into how we can use Module Federation to create a federated UI library to share with multiple teams. That'll be great! But have you had a look into your main.ts? This syntax allows you to share libraries with package name only. shared Is it considered harrassment in the US to call a black man the N-word? Like always, the code for this example is at my Github in case you feel like checking that out. Find centralized, trusted content and collaborate around the technologies you use most. SQL PostgreSQL add attribute from polygon to all points inside polygon but keep all points not just those that fall inside polygon. 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 is possible to nest a container. . Laberweinting Weather Forecasts. On this occasion,. If we skipped strictVersion or set it to false, webpack would only emit a warning at runtime. The ScriptedAlchemy example makes it seem like I need to reference my shared library in my shared library array in the webpack.config.ts files. In my app I populate the MatIconRegistry with icons that every app needs. Case Studies A Blog Utilizing This Websites Modules 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. Module Federation allows loading Micro Frontends at runtime. Why are only 2 out of the 3 boosters on Falcon Heavy reused? I tried to follow another example by ScriptedAlchemy, but I can't figure out how to make it work. 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. As mentioned above, the usage of shareAll allows for a quick first setup that "just works". Since Angular 14.2, it's possible to use Standalone Components as Angular Elements. Connect and share knowledge within a single location that is structured and easy to search. This way, evaluation order is unaffected by converting a module from local to remote or the other way around. Stack Overflow for Teams is moving to its own domain! How can we avoid pitfalls when working with Module Federation. I'll do my best to explain my setup.. Real sorry about how long this is going to be. 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. Module Federation Sharing Library Code; . 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: If you're interested in how resilience comes to play using MF - e.g What happens if the server is down? Thanks for contributing an answer to Stack Overflow! However, it might lead to too much shared bundles. In my previous article, Ive shown how to use Module Federation which is part of webpack beginning with version 5 to implement microfrontends. 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 hint will allow webpack to include the provided and fallback module directly instead of fetching the library via an asynchronous request. Array syntax This syntax allows you to share libraries with package name only. With Module Federation you can share not just modules, but other file types. 2021-08-08: Updated for Angular CLI 12.x Do you have a full example you can share? In order to make module federation work, we need to bootstrap the app asynchronously. Stack Overflow for Teams is moving to its own domain! Common dependencies like Angular or the Auth0 library can be shared and hence don't need to be loaded several times. How to help a successful high schooler who is failing in college? Check out this live module federation example on StackBlitz. The dynamic import makes Module Federation to load the shared libs. 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. After that, you can use the init schematic: The command line argument --type was added in version 14.3 and makes sure, only the needed configuration is generated. How do I simplify/combine these two methods for finding the smallest and largest int in an array? All of this was done by the @angular-architects/module-federation plugin. Why does the sentence uses a question form, but it is put a period in the end? It only contains stuff to control module federation. 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. Installing a custom builder making webpack within the CLI use the generated.
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