Bootstrap Datetime Picker not working with Bootstrap 4 Alpha 6

We are using Eonasdan Datetime picker. We are migrated to Boostrap 4 Alpha 6 since it comes with lot of improvements over Alpha5 but Datetime picker broken. Now it's not showing the numbers when we click on calendar icon in datetime picker.But it's working with alpha 5.I am looking for a possible way to solve this.

// Code goes here

$(function () {
  $('#datetimepicker1').datetimepicker();
});

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width">
    <title>Bootstrap date time picker</title>
    <!--<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.5/css/bootstrap.min.css">-->
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/4.17.45/css/bootstrap-datetimepicker.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
  </head>
  <body>
    
    <div class="container" style="margin:50px;">
      <h4>Bootstrap Datetime Picker</h4>
      <div class="row">
          <div class='col-sm-6'>
              <div class="form-group">
                  <div class='input-group date' id='datetimepicker1'>
                      <input type='text' class="form-control" />
                      <span class="input-group-addon">
                          <span class="fa fa-calendar"></span>
                      </span>
                  </div>
              </div>
          </div>
      </div>
    </div>
         
    
    <script src="https://code.jquery.com/jquery-2.2.4.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.17.1/moment.min.js"></script>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.3.2/js/tether.min.js"></script>
    <!--<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.5/js/bootstrap.min.js"></script>-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datetimepicker/4.17.45/js/bootstrap-datetimepicker.min.js"></script>
    <script src="script.js"></script>

</html>

Solution

Classes collapse in classes were changed into collapse show, that's why the code became incompatible.

in your vendor\eonasdan\bootstrap-datetimepicker\src\js\bootstrap-datetimepicker.js

getTemplate:

if (hasDate()) {
 content.append($('<li>').addClass((options.collapse && hasTime() ? 'collapse in' : '')).append(dateView));

Change to:

if (hasDate()) {
  content.append($('<li>').addClass((options.collapse && hasTime() ? 'collapse show' : '')).append(dateView));
  }

togglePicker:

   expanded = $parent.find('.in'),
  closed = $parent.find('.collapse:not(.in)'),

and

   } else { // otherwise just toggle in class on the two views
     expanded.removeClass('in');
     closed.addClass('in');

Change to:

 expanded = $parent.find('.show'),
 closed = $parent.find('.collapse:not(.show)'),

and

  } else { // otherwise just toggle in class on the two views
  expanded.removeClass('show');
 closed.addClass('show');

Source