Fails in safari Version 18.6 (20621.3.11.11.3)

[binarygit]

I tried using this polyfill with the following code:

<script>
  (async function() {
    console.log('hello')

    if (CSS['paintWorklet'] === undefined) {
      await import('https://unpkg.com/css-paint-polyfill');
    }

    CSS.paintWorklet.addModule('https://unpkg.com/css-houdini-voronoi/dist/worklet.js');
  })()
</script>

The polyfill fails in safari with the following error:
TypeError: o.getAll is not a function. (In 'o.getAll(t)', 'o.getAll' is undefined) index.js:748