How to add custom directive to enhanced-img?

[gterras]

Hi,

I'm trying to add custom directive to enhanced-img / vite-imagetools:

const toGreyscale: TransformFactory = (image) => {
  return image.greyscale()
}

export default defineConfig({
	plugins: [
		enhancedImages(),
		imagetools({
			extendTransforms: (builtins) => [toGreyscale, ...builtins],
		}),
		sveltekit(),
	],
})

// in component: 
import Pic from 'img.jpeg?enhanced&toGreyscale=1'

This doesnt do anything, and 500 if the imagetools plugin is passed before enhancedImages. I can't find anything in the docs, am I missing something?

Thanks