Warning / errors Drupal coding standards & Drupal Best practice

Problem/Motivation

There is some ERRORS / WARNINGS of Drupal CS and Drupal Best practice.

It's not urgent but i think it's better fix them in next release.

drupalcsp ./leaflet_more_maps 

FILE: web/modules/contrib/leaflet_more_maps/leaflet_more_maps.module
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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 11 | WARNING | Global constants should not be used, move it to a class or interface
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Time: 195ms; Memory: 10MB

☁  contrib [main] ⚡  drupalcs ./leaflet_more_maps 

FILE: web/modules/contrib/leaflet_more_maps/leaflet_more_maps.routing.yml
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FOUND 1 ERROR AFFECTING 1 LINE
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 7 | ERROR | [x] Expected 1 newline at end of file; 2 found
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: web/modules/contrib/leaflet_more_maps/README.md
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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 26 | WARNING | Line exceeds 80 characters; contains 81 characters
 45 | WARNING | Line exceeds 80 characters; contains 115 characters
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FILE: web/modules/contrib/leaflet_more_maps/leaflet_more_maps.module
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FOUND 58 ERRORS AND 5 WARNINGS AFFECTING 54 LINES
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   1 | ERROR   | [x] The PHP open tag must be followed by exactly one blank line
   2 | ERROR   | [x] You must use "/**" style comments for a file comment
  18 | WARNING | [ ] Hook implementations should not duplicate @return documentation
  18 | ERROR   | [ ] Description for the @return value must be on the next line
  35 | ERROR   | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
  80 | ERROR   | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
 222 | ERROR   | [x] Closing parenthesis of array declaration must be on a new line
 272 | ERROR   | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
 280 | ERROR   | [x] No space found before comment text; expected "// 'Outdoors'," but found "//'Outdoors',"
 282 | WARNING | [x] A comma should follow the last multiline array item. Found: 'Streets'
 288 | ERROR   | [x] Case breaking statements must be followed by a single blank line
 291 | ERROR   | [x] Case breaking statements must be followed by a single blank line
 294 | ERROR   | [x] Case breaking statements must be followed by a single blank line
 297 | ERROR   | [x] Case breaking statements must be followed by a single blank line
 299 | ERROR   | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
 323 | ERROR   | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
 386 | ERROR   | [x] Concat operator must be surrounded by a single space
 398 | ERROR   | [x] Concat operator must be surrounded by a single space
 410 | ERROR   | [x] Concat operator must be surrounded by a single space
 422 | ERROR   | [x] Concat operator must be surrounded by a single space
 434 | ERROR   | [x] Concat operator must be surrounded by a single space
 440 | ERROR   | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
 441 | ERROR   | [x] Expected 1 space before "="; 0 found
 449 | ERROR   | [x] Array indentation error, expected 8 spaces but found 9
 458 | ERROR   | [x] No space found before comment text; expected "// 'Toner'," but found "//'Toner',"
 473 | ERROR   | [x] Expected 1 space between "'maxZoom'" and double arrow; 0 found
 473 | ERROR   | [x] Expected 1 space before "=>"; 0 found
 486 | ERROR   | [x] Comments may not appear after statements
 486 | ERROR   | [x] Inline comments must start with a capital letter
 486 | ERROR   | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
 487 | ERROR   | [x] Comments may not appear after statements
 487 | ERROR   | [x] Inline comments must start with a capital letter
 487 | ERROR   | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
 488 | ERROR   | [x] Comments may not appear after statements
 488 | ERROR   | [x] Inline comments must start with a capital letter
 508 | WARNING | [ ] Line exceeds 80 characters; contains 84 characters
 510 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 4
 511 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 4
 512 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 4
 513 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 4
 514 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 6
 515 | WARNING | [ ] Line exceeds 80 characters; contains 89 characters
 515 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 8
 516 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 8
 517 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 10
 518 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 10
 519 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 8
 520 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 6
 521 | ERROR   | [x] Line indented incorrectly; expected 2 spaces, found 4
 523 | ERROR   | [x] Line indented incorrectly; expected 3 spaces, found 2
 561 | ERROR   | [x] Short array syntax must be used to define arrays
 567 | ERROR   | [ ] Missing parameter comment
 568 | ERROR   | [ ] Missing parameter comment
 569 | ERROR   | [ ] Missing parameter comment
 570 | ERROR   | [ ] Missing parameter comment
 571 | ERROR   | [ ] Missing parameter comment
 573 | ERROR   | [ ] Type hint "false" missing for $reverse_order
 573 | ERROR   | [x] Incorrect spacing between default value and equals sign for argument "$default_settings"; expected 1 but found 2
 580 | ERROR   | [x] Expected 1 space after "=>"; 2 found
 604 | WARNING | [ ] Line exceeds 80 characters; contains 81 characters
 605 | ERROR   | [x] There must be exactly one blank line before the tags in a doc comment
 629 | ERROR   | [x] Array indentation error, expected 6 spaces but found 8
 634 | ERROR   | [x] Array closing indentation error, expected 4 spaces but found 6
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PHPCBF CAN FIX THE 52 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: web/modules/contrib/leaflet_more_maps/leaflet_demo/src/Form/LeafletDemoForm.php
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FOUND 1 ERROR AND 1 WARNING AFFECTING 2 LINES
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 13 | WARNING | [ ] The class short comment should describe what the class does and not simply repeat the class name
 88 | ERROR   | [x] Use null coalesce operator instead of ternary operator.
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: web/modules/contrib/leaflet_more_maps/leaflet_more_maps.api.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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 9 | WARNING | Line exceeds 80 characters; contains 91 characters
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FILE: web/modules/contrib/leaflet_more_maps/src/Form/SettingsForm.php
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FOUND 2 ERRORS AFFECTING 2 LINES
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 33 | ERROR | Missing parameter comment
 34 | ERROR | Missing parameter comment
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