Issue #3492582 by tom konda, alexpott, nod_, zaryab_drupal, smustgrave: Replace some of obj && obj.prop with optional chaining

Revert "Issue #3492582 by tom konda, zaryab_drupal, nod_, smustgrave: Replace some of obj && obj.prop with optional chaining"

This reverts commit c4c4de21.

Issue #3492582 by tom konda, zaryab_drupal, nod_, smustgrave: Replace some of obj && obj.prop with optional chaining

Issue #3491275 by nicxvan, dww, catch, mstrelan, berdir, larowlan: Mark core modules as converted to OOP hooks

Issue #3491210 by mstrelan: Add array return to remaining applicable hook implementations in Hook classes

Issue #3416522 by catch, alexpott, longwave, phenaproxima, nicxvan, wim leers, smustgrave, larowlan, berdir, godotislate, dww: Add the ability to install multiple modules and only do a single container rebuild to ModuleInstaller

Issue #3489776 by mstrelan, nicxvan: Add void return to all pageAttachments, pageTop and pageBottom hook implementations

Issue #3483599 by nicxvan, ghost of drupal past, catch, longwave, fabianx: Convert all procedural hook implementations to Hook classes

Issue #3477687 by mstrelan, quietone: Add ResponseInterface return typehints to protected test helper methods

Issue #3458426 by mstrelan, catch, abarrio, quietone, smustgrave: Add int return typehints to protected test helper methods

Issue #3456601 by mstrelan, xjm, smustgrave, longwave: Add void return typehints to test helper methods

Revert "Issue #3458426 by mstrelan, catch, smustgrave: Add int return typehints to protected test helper methods"

This reverts commit d433d966.

Issue #3458426 by mstrelan, catch, smustgrave: Add int return typehints to protected test helper methods

Issue #3467294 by quietone, nod_, smustgrave, catch, longwave: Change string 'Modules to enable' to {@inheritdoc} in comments

Issue #3465602 by catch, quietone, smustgrave: Order tests by number of public methods to optimize gitlab job times

Issue #3421418 by mstrelan, Spokje, xjm, mondrake, longwave, acbramley: Add void return typehints to all test methods

Issue #2874067 by kkalashnikov, Nikolay Shapovalov, quietone, smustgrave, benjifisher, MerryHamster, xjm, dww: Fix Drupal.Commenting.DocCommentLongArraySyntax coding standard

Issue #3439646 by Tom Konda, smustgrave: Some of string comparisons should use String.prototype.startsWith() or String.prototype.endsWith()

Issue #3442530 by smustgrave, andypost, quietone: Update contextual module deprecation for removal in 12.0

Issue #3431452 by godotislate, smustgrave, alexpott: Rename RenderElement and FormElement plugin abstract classes to RenderElementBase and FormElementBase

Issue #3421439 by godotislate, sorlov, quietone, smustgrave, alexpott, larowlan, longwave, andypost: Convert form and render element plugin discovery to attributes

Issue #3426955 by mstrelan, sorlov, alexpott, smustgrave, godotislate: Convert ViewsField plugin discovery to attributes

Issue #3353210 by mondrake, PrabuEla, Spokje: [PHPUnit 10] @dataProvider methods must be declared static and public

Issue #3416898 by Tom Konda, Tirupati_Singh: Use String.prototype.includes() instead of String.prototype.indexOf() where necessary

Issue #3405153 by Nitin shrivastava, sijumpk, smustgrave, larowlan: Contexual links should never be bold, unless the theme explicitly makes it so

Issue #3316274 by Wim Leers, catch, nod_, alexpott, longwave, bnjmnm: Stabilize FunctionalJavascript testing AJAX: add ::assertExpectedAjaxRequest()