I ran this following phpcs command and errors were reported below.
phpcs \
--standard=Drupal,DrupalPractice -n \
--extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml,twig \
--ignore="*.features.*,*.pages*.inc,*/node_modules/*" \
web/modules/contrib/webp
FILE: /webp/webp.module
---------------------------------------------------------------------------------
FOUND 2 ERRORS AFFECTING 2 LINES
---------------------------------------------------------------------------------
113 | ERROR | [x] Comments may not appear after statements
114 | ERROR | [x] Comments may not appear after statements
---------------------------------------------------------------------------------
PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
---------------------------------------------------------------------------------
FILE: /webp/src/Controller/ImageStyleDownloadController.php
---------------------------------------------------------------------------------------------------------------------
FOUND 12 ERRORS AFFECTING 5 LINES
---------------------------------------------------------------------------------------------------------------------
165 | ERROR | [x] Spaces must be used to indent lines; tabs are not allowed
165 | ERROR | [x] Line indented incorrectly; expected 6 spaces, found 3
166 | ERROR | [x] Spaces must be used to indent lines; tabs are not allowed
166 | ERROR | [x] Line indented incorrectly; expected 6 spaces, found 3
167 | ERROR | [x] Spaces must be used to indent lines; tabs are not allowed
167 | ERROR | [x] Line indented incorrectly; expected 6 spaces, found 3
168 | ERROR | [x] Spaces must be used to indent lines; tabs are not allowed
168 | ERROR | [x] Line indented incorrectly; expected 8 spaces, found 4
168 | ERROR | [x] TRUE, FALSE and NULL must be uppercase; expected "TRUE" but found "true"
168 | ERROR | [x] TRUE, FALSE and NULL must be uppercase; expected "FALSE" but found "false"
169 | ERROR | [x] Spaces must be used to indent lines; tabs are not allowed
169 | ERROR | [x] Line indented incorrectly; expected 6 spaces, found 3
---------------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 12 MARKED SNIFF VIOLATIONS AUTOMATICALLY
---------------------------------------------------------------------------------------------------------------------
FILE: /webp/src/Controller/FileDownloadController.php
---------------------------------------------------------------------------------------------------------------
FOUND 8 ERRORS AFFECTING 8 LINES
---------------------------------------------------------------------------------------------------------------
14 | ERROR | [x] There must be one blank line after the last USE statement; 2 found;
17 | ERROR | [x] Missing class doc comment
101 | ERROR | [x] Separate the @throws and @see sections by a blank line.
103 | ERROR | [x] Additional blank lines found at end of doc comment
194 | ERROR | [ ] Parameter $uri is not described in comment
197 | ERROR | [ ] Doc comment for parameter $image does not match actual variable name $scheme
213 | ERROR | [x] Expected 1 blank line after function; 2 found
216 | ERROR | [x] The closing brace for the class must have an empty line before it
---------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 6 MARKED SNIFF VIOLATIONS AUTOMATICALLY
---------------------------------------------------------------------------------------------------------------
FILE: /webp/src/Webp.php
-------------------------------------------------------------------------------------------------------------------------------------------------------------
FOUND 14 ERRORS AFFECTING 10 LINES
-------------------------------------------------------------------------------------------------------------------------------------------------------------
9 | ERROR | [x] Use statements should be sorted alphabetically. The first wrong one is Drupal\Core\File\FileSystemInterface.
13 | ERROR | [x] Non-namespaced classes/interfaces/traits should not be referenced with use statements
48 | ERROR | [x] Expected "Drupal\Core\File\FileSystemInterface" but found "Drupal\Core\File\FileSystemInterface;" for @var tag in member variable comment
181 | ERROR | [x] Parameter comment must end with a full stop
206 | ERROR | [ ] Variable "ImageMagickImg" starts with a capital letter, but only $lowerCamelCase or $snake_case is allowed
208 | ERROR | [ ] Variable "ImageMagickImg" starts with a capital letter, but only $lowerCamelCase or $snake_case is allowed
208 | ERROR | [ ] The array declaration extends to column 84 (the limit is 80). The array content should be split up over multiple lines
211 | ERROR | [ ] Variable "ImageMagickImg" starts with a capital letter, but only $lowerCamelCase or $snake_case is allowed
233 | ERROR | [x] There must be exactly one blank line before the tags in a doc comment
233 | ERROR | [ ] Missing parameter comment
233 | ERROR | [ ] Missing parameter type
234 | ERROR | [ ] Missing parameter comment
234 | ERROR | [ ] Missing parameter type
236 | ERROR | [ ] Description for the @return value is missing
-------------------------------------------------------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 5 MARKED SNIFF VIOLATIONS AUTOMATICALLY
-------------------------------------------------------------------------------------------------------------------------------------------------------------