Support Drupal 10 and update all use of deprecation in the Vartheme BS4 theme

Problem/Motivation

Drupal 10.0 development

Following with

Proposed resolution

• Support Drupal ~10 and change all deprecated packages, classes, functions, asset libraries to the Drupal 10 way
• Real physical testing with Drupal ~10
• Automated upgrade to Drupal ~10

Further drupal-check on

composer create-project drupal/recommended-project:~9 /var/www/html/sandboxes/drupal9vartheme_bs4

cd /var/www/html/sandboxes/drupal9vartheme_bs4/

composer config minimum-stability dev

composer require drupal/vartheme_bs4:9.0.x-dev

composer require drupal/core-dev:~9 --with-all-dependencies
composer require mglaman/drupal-check --dev
composer require phpspec/prophecy-phpunit:^2 --dev

php vendor/bin/drupal-check -d web/themes/contrib/vartheme_bs4/

Output:

5/5 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%


 [OK] No errors                                                                 

Thanks for using drupal-check!

Remaining tasks

• ✅ File an issue about this project
• ✅ Addition/Change/Update/Fix to this project
• ✅ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support on feature change/addition
• ➖ User Guide Documentation support on feature change/addition
• ➖ Accessibility and Readability
• ✅ Code review from 1 Varbase core team member
• ✅ Full testing and approval
• ✅ Credit contributors
• ✅ Review with the product owner
• ✅ Update Release Notes and Update Helper on new feature change/addition
• ✅ Release varbase-9.0.7, varbase-10.0.0-alpha1, vartheme_bs4-9.0.15

Varbase update type

• ✅ No Update
• ➖ Optional Update
• ➖ Forced Update
• ➖ Forced Update if Unchanged

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• Issue #3279038: Support Drupal 10 and update all use of deprecation in the Vartheme BS4 theme