On Angular, depending on the way the sample is coded, templateAnnotationsUpdated might be needed. However, it adds complexity to the code without any big benefit.

If "content" and "template-annotations" are loaded (or templateAnnotations are loaded firstly) and then do others, templateAnnotationsUpdated is redundant. (https://git.magnolia-cms.com/projects/MODULES/repos/frontend-helpers/pull-requests/158/diff#samples/angular-sample/src/app/root.component.ts). In addition, React and Vue load both firstly also.

Pros:

• Reduce complexity
• Consistent with Vue and React

Cons:

• Need asking customers to verify their code
• May break customers' code on a rare occasion in edit mode if their code have not updated yet

B.T.W, we might think about providing a loading method in the editors for loading content and templateAnnotations instead of SPA do.