More information may be found in the CHANGELOG.
Configurations in TestBed that allow for easier cleanup of test modules and environments are now enabled by default. This functionality was added in v12 and, while it is currently enabled by default, it may be removed or adjusted per module.
The documentation were also given greater attention in this version’s release. Check out these $localize documentation to see how they’re introducing additional examples to help with learning and getting started with Angular!
You may now inline not just your Google Fonts (v11), but also your Adobe Fonts! Check out Mark Thompson’s video on how to use font inling to improve your performance!
Angular will no longer support Internet Explorer 11 as of version 13. The team issued an RFC (request for comments) on eliminating IE11 support, and the response was largely positive.
Dropping these polyfills means that everything will be quicker — apps will load faster (because to their reduced size) and implementation will be faster (because of the improved API).
As stated by the team:
“We’ll be able to remove special JS and CSS code paths, polyfills, build passes, and dev infrastructure that exists only because we support IE11.”
Dropping IE11 is a positive thing since it allows Angular to fully use the Web APIs of contemporary and evergreen browsers. If that is a browser you must support, you will be able to utilize Angular v12 with full support until November 2022. I’m looking forward to this shift and believe that the LTS that Angular v12 is providing is more than generous, given that Microsoft has already discontinued support for IE11 from their Microsoft 365 products.
New Angular projects in v13+ will have persistent build cache enabled by default! This dramatically accelerates the development of Angular apps:
“A 68% increase in construction speed and additional ergonomic alternatives” — Mike Thompson
This was another subject on which the Angular team solicited feedback and acted on it. The strong amount of support prompted them to add this in v13, so keep an eye out for future RFCs — the team actually listens and cares about the community’s feedback as they drive the framework forward.
TypeScript 4.4 now has complete support as well. Among the many features of TS 4.4 are:
RxJS has now reached version 7. RxJS 7.4 will be the default for new apps generated with the Angular CLI as of Angular v13. If you are still using RxJS 6, you will need to manually perform the following command to update: npm install [email protected].
Accessibility changes have been made to Angular Material components (which are now based on MDC components).