To ensure that things do not break, create a few integration tests which test the SPA editing libraries running in the context of the Magnolia Page Editor.

They could test the demo projects included in the frontend libraries repository.

For example:

• Edit a component.
• Add a component.
• Add a component to the area of a component.

Probably these tests will be similar to the existing Pages app selenium tests.

For example: https://git.magnolia-cms.com/projects/PLATFORM/repos/ce/browse/magnolia-integration-tests/tests/src/test/java/info/magnolia/functionaltests/PagesCoreFunctionalTests.java

Some planned tests:

https://jira.magnolia-cms.com/issues/?jql=labels%20%3D%20functional-tests