jquery-migrate-helper

This is a maintenance and feature update, no breaking changes should be included.

• Fixed a bug where an empty error text would cause the plugin scripts from working properly.
• Improved how inline scripts are detected and logged when applicable.
• Improved logging to also capture deprecations within WordPress core.
• Changed variable declarations for front-end scripts to use var instead of const and let, to improve compatibility for sites servicing older clients.
• Updated the (modern) bundled jQuery Migrate script to match what is shipped with WordPress core.

• Added legacy jQuery UI to be loaded if legacy jQuery is in use.
• Added mention of site URLs in automatic emails.
• Added option to enable/disable automatic downgrades.
• Added logic to ensure only one downgrade request is sent per page load.
• Updated logic around automatic downgrades for improved performance.
• Fixed core deprecation notices being incorrectly labeled as undetermined inline ones.

Changelog

• Added option to dismiss deprecation notices in backend
• Added logging of deprecation notices in the front end
• Added admin bar entry to show when deprecations occur
• Added view of logged deprecations
• Added dashboard notice encouraging users to remove the plugin if no deprecations have been logged in a while (1 week).
• Changed the time interval between showing the dashboard nag from 2 weeks to 1 week, as WordPress 5.6 comes closer.