How to convert from PDF rgb to cmyk？

[ekxs0109]

    async loadFile(e: Event) {
        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
        // @ts-ignore
        const file = e.target.files[0];

        const arrayBuffer = await file.arrayBuffer()
        const array = new Uint8Array(arrayBuffer)


        ImageMagick.read(array, MagickFormat.Pdf, (pdfMagick) => {
            debugger
        })

    }

I wrote the code that way, but it doesn't work.

[dlemstra]

There is no support for reading PDF files. This requires the Ghostscript delegate and that is not available in web assembly.