Access FlexSearch static methods via bundled export (static class methods of FlexSearch)

[schnerring]

Summary

I looked at the most recent changes of you FlexSearch implementation to inspire myself and saw that you're not importing the module according to the docs.

Here are the relevant FlexSearch docs to look at: https://github.com/nextapps-de/flexsearch?tab=readme-ov-file#esmes6-bundled-module

<script type="module">

    // FlexSearch is NOT available on window.FlexSearch
    // Access FlexSearch static methods via bundled export (static class methods of FlexSearch)

    import FlexSearch from "./node_modules/flexsearch/dist/flexsearch.bundle.module.min.js";

    const index = FlexSearch.Index(options);
    const document = FlexSearch.Document(options);
    const worker = FlexSearch.Worker(options);

</script>

I think it makes the code a bit more clearer. I have to shamefully admit that I didn't test if this code works with doks. However, here is my theme's implementation, which works: https://github.com/schnerring/hugo-theme-gruvbox/blob/fca542372887af35584e3a079af1ef40c3ac644d/assets/js/flexsearch.js

Motivation

Adhere to FlexSearch docs

Checks

• Read Creating a pull request
• Supports all screen sizes (if relevant)
• Supports both light and dark mode (if relevant)
• Passes npm run test (if relevant)

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