Drupal 8.x

I've issued:

composer update --dry-run

in my installation, and I got the following message:

Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

I'm struggling to make template suggestions like IMAGE--BLOCK-TYPE or IMAGE--FIELD-TYPE. I have three different block types(image1, image2, image3) with one image field(field_image_1, field_image_2 and field_image_3). And I don't know how to get suggestion like

image--block_image1.html.twig

image--block_image2.html.twig

image--block_image3.html.twig

or

image--field_image_1.html.twig

image--field_image_2.html.twig

image--field_image_3.html.twig

Is there any way to pass variable between two hooks

Hi, I have a Drupal 8 site that is broken. I did something really bad and messed up the composer. Is there any way to recover the site or export the data and import it into another install? Site is https://d8.valvulita.com

All inputs are appreciated. Thank you.

I developed a small drupal module which bring the external Js to head tags.

I'm not new to Drupal but all my sites are Drupal 7 and I started migrating them to Drupal 8. I'm trying to get used to the current work flow, and I'm starting to use configurations imports and exports. I understand that with this we can move from development site to production site without having to touch directly the database. I already have development and production in sync, and I did some work in the development site such as installing a couple fo modules, and changing a couple of configurations. One of the new modules is pathauto and I bulk converted paths for a lot of content.