Allow using the microfrontend platform without having to depend on the SCION Workbench

[danielwiehl]

Is your feature request related to a problem? Please describe.

SCION Workbench Application Platform requires SCION Workbench to integrate microfrontends.

Describe the solution you'd like

This should be changed in order to use the microfrontend platform standalone. The microfrontend platform must not provide a UI.

The platform will provide the following features:

• provides the mechanics to integrate microfrontends
• allows integrating any web application with no need for adaptation (unless interacting with the platform)
• is written in TypeScript, no dependency on Angular or similar
• independent of the SCION Workbench
• allows cross-origin messaging between microfrontends and replying to messages (topic-based, intent-based)
• provides the concept of capabilities and intents for loosely coupled interaction
• allows declaring capabilities in a manifest (json file) or registering capabilities at runtime
• allows nesting microfrontends
• allows querying the manifest registry and listening for manifest registry changes
• provides an outlet to display a microfrontend; nevertheless, it still must be possible integrating a microfrontend using an iframe
• activates applications at platform startup (e.g. to register capabilities based on the application state)

SCION Workbench will be changed as follows: - provides a microfrontend platform adapter to show microfrontends in views or popups - drops support for activities (without replacement) - no longer has to be a top-level component; therefore can easily be integrated into an app shell

Strikethrough features are tacked through separate issues.

This feature will introduce breaking changes, mainly in the application platform, which will be renamed to something like microfrontend-platform.

Expected release date: mid of January 2020

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Please note: It is important to remain flexible as the needs of the project are constantly evolving. For this reason, features are subject to change.

[danielwiehl]

We have released a first official beta version of the new SCION Microfrontend Platform: @scion/microfrontend-platform. It is the result of intensive development over the past months and marks a significant milestone. For more information, please refer to the Git Repo https://github.com/SchweizerischeBundesbahnen/scion-microfrontend-platform.

We close this issue because we track further development through separate issues.