Drupal Coding Standards Issues | phpcs

Problem/Motivation

Getting Following errors/warnings

$ phpcs --standard=Drupal datetime_flatpickr

FILE: C:\Users\Admin\Desktop\task\datetime_flatpickr\css\datetime-flatpickr.css
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FOUND 1 ERROR AFFECTING 1 LINE
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 1 | ERROR | [x] End of line character is invalid; expected "\n" but found
   |       |     "\r\n"
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: C:\Users\Admin\Desktop\task\datetime_flatpickr\js\datetime-flatpickr.js
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FOUND 1 ERROR AFFECTING 1 LINE
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 1 | ERROR | [x] End of line character is invalid; expected "\n" but found
   |       |     "\r\n"
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
--------------------------------------------------------------------------------


FILE: ...atetime_flatpickr\src\Plugin\Field\FieldWidget\DateTimeFlatPickrWidget.php
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FOUND 2 ERRORS AFFECTING 2 LINES
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   1 | ERROR | [x] End of line character is invalid; expected "\n" but found
     |       |     "\r\n"
 488 | ERROR | [x] Use null coalesce operator instead of ternary operator.
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PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: ...me_flatpickr\src\Plugin\Field\FieldWidget\DateTimeRangeFlatPickrWidget.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 1 | ERROR | [x] End of line character is invalid; expected "\n" but found
   |       |     "\r\n"
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
--------------------------------------------------------------------------------


FILE: ...sk\datetime_flatpickr\tests\src\Functional\DateTimeFlatPickrWidgetTest.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 1 | ERROR | [x] End of line character is invalid; expected "\n" but found
   |       |     "\r\n"
--------------------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
--------------------------------------------------------------------------------


FILE: ...tetime_flatpickr\tests\src\Functional\DateTimeRangeFlatPickrWidgetTest.php
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FOUND 1 ERROR AFFECTING 1 LINE
--------------------------------------------------------------------------------
 1 | ERROR | [x] End of line character is invalid; expected "\n" but found
   |       |     "\r\n"
--------------------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
--------------------------------------------------------------------------------

Time: 577ms; Memory: 12MB

Proposed resolution

Fix the errors and warnings.