Lesson 4 — Managing TYPO3 Deprecation Strategy
Prerequisites and goals
Prerequisites
Theoretical prerequisites
This lesson assumes that you already know the following:
- Understand extension compatibility requirements
- Learn about API changes between versions
- Master code migration strategies
- Understand backward compatibility layers
Practical prerequisites
Before you start this lesson, please have the following things ready:
- Update custom extensions for newer versions
- Implement code compatibility fixes
- Test extension functionality post-upgrade
- Document code migration changes
Goals
Theoretical goals
By the end of this lesson, you should know the following:
- Understand deprecation notices and their meaning
- Learn about replacement APIs and functions
- Master deprecation scanning tools
- Understand code modernization approaches
Practical goals
By the end of this lesson, you should have completed the following:
- Identify deprecated code usage
- Implement API replacements
- Run deprecation scans
- Update code to current standards