remove jQuery Migrate

[DanielRuf]

Preconditions (*)

jQuery Migrate should never be used in production as this is just meant to migrate from an older version to the used one (for which the Migrate version is).

https://github.com/magento/magento2/blob/2.3-develop/lib/web/jquery/jquery-migrate.js

See https://github.com/jquery/jquery-migrate/tree/1.x-stable#readme

The same applies to underscore, moment.js and other unnecessary libraries and scripts.

This is a big file and just for debugging purposes.

Steps to reproduce (*)

Expected result (*)

1. jQuery Migrate should not be loaded

Actual result (*)

1. jQuery Migrate is loaded

[magento-engcom-team]

Hi @DanielRuf. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento-engcom-team give me 2.3-develop instance - upcoming 2.3.x release

For more details, please, review the Magento Contributor Assistant documentation.

@DanielRuf do you confirm that you was able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

[ananth-iyer]

@DanielRuf I see there is the production version of jQuery Migrate. On production mode, shouldn't it load production version jQuery Migrate?

[DanielRuf]

I'm not sure if I completely understand your comment.

Why do we even need jQuery migrate? It is not meant to be used in websites in production. Also this and other libs are not the minified versions.

[magento-engcom-team]

Hi @engcom-backlog-nazar. Thank you for working on this issue.
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[magento-engcom-team]

✅ Confirmed by @engcom-backlog-nazar
Thank you for verifying the issue. Based on the provided information internal tickets MAGETWO-98417, MAGETWO-98418 were created

Issue Available: @engcom-backlog-nazar, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.