jQuery.type() has been deprecated and can easily be replaced with vanilla typeof. Slick broken with jQuery 4!

[JPustkuchen]

short description of the bug / issue, provide more detail below.
Slick uses $.type() aka jQuery.type() - See https://api.jquery.com/jQuery.type/

Here are the two lines in Slick code where it is used:
https://github.com/search?q=repo%3Akenwheeler%2Fslick%20%24.type&type=code

jQuery.type() has been deprecated in jQuery 3,3 and removed in jQuery 4 - so Slick is broken.

There's a super simple replacement in Vanilla JS:
typeof value

This is the CoPilot answer:

Since jQuery.type() is deprecated in jQuery 4, you can use the native JavaScript typeof operator as a replacement. Here's how you can do it:

// Using jQuery.type()
var type = jQuery.type(value); // Deprecated in jQuery 4

// Using native JavaScript typeof
var type = typeof value;

The typeof operator returns a string indicating the type of the unevaluated operand. It's a straightforward and efficient way to get the type of a variable in JavaScript.

Would you like more examples or further assistance with jQuery 4?

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[ paste your jsfiddle link here ]

TODO

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Steps to reproduce the problem

Try to use Slick with jQuery 4

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What is the expected behaviour?

Slick works

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What is observed behaviour?

Slick is broken

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More Details

• Which browsers/versions does it happen on? All
• Which jQuery/Slick version are you using? 4
• Did this work before? In jQuery 3

[JPustkuchen]

#494 #3283

[JPustkuchen]

Here's the MR to fix this: #4221