shipsCRUD is not a function error if put js file in webpack.mix.js

Hello,
In my laravel 6 app I use js files which I attach in in blade file
resources/views/ship/index.blade.php like :

@endsection

@section('scripts')

<link rel="stylesheet" href="" type="text/css">

<script src=""></script>
<script src=""></script>

<script src=""></script>

<script>
/*<![CDATA[*/

var oTable...

Code (JavaScript):

shipsCRUD is not a function error if put js file in webpack.mix.js

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