I made a little npm-package with which you can use iro as a composeable.
It also has a disable functionality, which is a little hack, to be honest.
I achieved this by resetting the color every time the "input:change" event fires.
I didn't tested if you need to manually destroy anything because vue should do that automatically.

To use my module just type:
npm i v-iro.js
and import it into your component by:
import { useIroColorPicker } from "v-iro.js"
and then you can already use it:

const wrapper: Ref<HTMLElement> = ref()
const color = ref("")
const disable = ref(false)
const options = {
 width: 130
}
useIroColorPicker(wrapper, options, disable).then((colorPicker) => {
 colorPicker.on("color:change", (pickerColor: IroColor) => {
 color.value = pickerColor.hexString
 })
})