TypeError: Cannot read properties of undefined (reading 'trim')

[Billy-Sheppard]

Describe the bug
JS console error from highlightjs-line-numbers.min.js.

To Reproduce
Steps to reproduce the behavior:

...
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/vs2015.min.css" integrity="sha512-mtXspRdOWHCYp+f4c7CkWGYPPRAhq9X+xCvJMUBVAb6pqA4U8pxhT3RWT3LP3bKbiolYL2CkL1bSKZZO4eeTew==" crossorigin="anonymous" referrerpolicy="no-referrer">
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/highlight.min.js" integrity="sha512-D9gUyxqja7hBtkWpPWGt9wfbfaMGVt9gnyCvYa+jojwwPHLCzUm5i8rpk7vD7wNee9bA35eYIjobYPaQuKS1MQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlightjs-line-numbers.js/2.8.0/highlightjs-line-numbers.min.js" integrity="sha512-axd5V66bnXpNVQzm1c7u1M614TVRXXtouyWCE+eMYl8ALK8ePJEs96Xtx7VVrPBc0UraCn63U1+ARFI3ofW+aA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
...

Have this in your HTML, use highlightjs (and line-numbers). Prints this to console.

highlightjs-line-numbers.min.js:1  
Uncaught TypeError: Cannot read properties of undefined (reading 'trim')
    at highlightjs-line-numbers.min.js:1:1620
    at f (highlightjs-line-numbers.min.js:1:1932)
    at highlightjs-line-numbers.min.js:1:1004

Expected behavior
No errors.

Desktop (please complete the following information):

• OS: Ubuntu
• Browser [e.g. chrome, safari]: Edge
• Version [e.g. 22]: 125.0.2535.79

[angelikatyborska]

I am also experiencing this error. To add some details, for me it happens for elements whose text content is empty. E.g.

<pre><code></code></pre>

const codeElement = document.querySelectorAll("pre code")
window.hljs.highlightElement(codeElement);
(window.hljs as HLJSApi & HLJSNumbers).lineNumbersBlock(codeElement, { singleLine: true });

The raising code is this line, it raises when lines is equal to []:
https://github.com/wcoder/highlightjs-line-numbers.js/blob/master/src/highlightjs-line-numbers.js#L213