Add create_attribute()

[webflo]

create_attribute() is a new twig function in Drupal core 8.3.x https://www.drupal.org/node/2818293

The Attribute class contains a lot of logic, i am not sure if we should copy it, trim it down or maybe add drupal/core as a composer dependency and use it directly?

[webflo]

Hmm aleksip/plugin-data-transform has the necessary classes already.

[aleksip]

Ideally these issues will land some day:

• Move Attribute classes under Drupal\Component
• [Meta] Expose Drupal Components outside of Drupal

Meanwhile Data Transform Plugin has the required classes and is already a dependency of Pattern Lab Twig Standard Edition for Drupal, so maybe it could be added as a dependency here too.

[romanovma]

are there any news on this one?

[waako]

There's PR #8 but that won't work, needs to be a function

[waako]

just added a create_attribute function in #10