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@ManfredSteyer ManfredSteyer The Microfrontend Revolution Module Federation with Angular Manfred Steyer, ANGULARarchitects.io

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@ManfredSteyer Contents #1: Module Federation #2 Federated Angular #3: Version Mismatch

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@ManfredSteyer Manfred Steyer

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@ManfredSteyer

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@ManfredSteyer

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@ManfredSteyer Idea const Component = await import('http://other-app/xyz') Does not work with webpack/ Angular CLI Even lazy parts must be known at compile time!

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@ManfredSteyer Webpack 5 Module Federation Shell (Host) Microfrontend (Remote) // Maps Urls in // webpack config remotes: { mfe1: "mfe1" } // Expose files in // webpack config exposes: { './Cmp': './my.cmp.ts' } import('mfe1/Cmp')

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@ManfredSteyer How to Get the Microfrontend's URL? Shell (Host) Microfrontend (Remote) RemoteEntry.js

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@ManfredSteyer How to Share Libs? Shell (Host) Microfrontend (Remote) shared: [ "@angular/core", "…" ] shared: [ "@angular/core", "…" ]

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@ManfredSteyer

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@ManfredSteyer ?

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@ManfredSteyer Custom Builder

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@ManfredSteyer

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@ManfredSteyer 1) ng add @angular-architects/module-federation 2) Adjust generated configuration 3) ng serve

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@ManfredSteyer

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@ManfredSteyer

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@ManfredSteyer Dealing with Version Mismatch SemVer by Default: Highest compatiable version Fallback: Use own version Relaxing: Configure a range of accepted versions Singleton: Warning or error

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@ManfredSteyer Example for SemVer and Fallback • Shell: my-lib: ^10.0.0 • MFE1: my-lib: ^10.1.1 • MFE2: my-lib: ^9.0.0 Result: • Shell and MFE1 share ^10.1.1 • MFE2 falls back to its own version ^9.0.0

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@ManfredSteyer Configuring Singletons shared: { "my-lib": { singleton: true, strictVersion: true // Error instead of warning! } }

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@ManfredSteyer Relaxing Version Requirements shared: { "my-lib": { requiredVersion: ">=1.0.1 <11.1.1" } }

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@ManfredSteyer Free eBook ANGULARarchitects.io/book Updated for Module Federation and Alternatives

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@ManfredSteyer When can we have it? Webpack 5 and Module Federation: final Angular CLI must support webpack 5 too Angular CLI 11 (Beta) allows to opt into webpack 5 Angular CLI 11 ? (fall 2020)

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@ManfredSteyer Conclusion Module Federation Loading Separately Deployed Code Federated Angular Version Mismatch

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@ManfredSteyer d Slides & Examples Remote Company Workshops and Consulting http://angulararchitects.io