PSalm

Psalm can fix some error, so let’s start with vendor/bin/psalm.phar --init and then vendor/bin/psalm.phar src/ to check errors and if it say that can solve any. It will show something like:

Psalm can automatically fix 7 of these issues. ` what you should type to fix)
Run Psalm again with
--alter --issues=InvalidReturnType,MissingReturnType,MissingClosureReturnType --dry-run

Note: Do the same for tests folder and plugins src and tests.

Fixing manual errors

The easy way to fix is going from model to controller namespace, and work on one namespace at a time.

• vendor/bin/psalm.phar --show-info=false src/Model/Entity
• vendor/bin/psalm.phar --show-info=false src/Model/Behavior
• vendor/bin/psalm.phar --show-info=false src/Model/Table
• vendor/bin/psalm.phar --show-info=false src/Model
• vendor/bin/psalm.phar --show-info=false src/View
• vendor/bin/psalm.phar --show-info=false src/Shell
• vendor/bin/psalm.phar --show-info=false src/Service
• vendor/bin/psalm.phar --show-info=false src/Controller
• vendor/bin/psalm.phar --show-info=false src/[Any big namespace]
• vendor/bin/psalm.phar --show-info=false src
• vendor/bin/psalm.phar --show-info=false tests/

At the end we can ignore the invalid errors with composer psalm-rebuild-baseline

Go to the next step (Code Style)