Add a prefix to Tailwind UI components automatically (with Tampermonkey)

add-prefix-to-tailwind-ui.js

// ==UserScript==
// @name         Add TW UI prefix
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Add a prefix to Tailwind UI
// @author       https://gist.github.com/KevinBatdorf/d772807789a79f07453c144c772d6a76
// @match        https://tailwindui.com/components/*
// @grant        none
// ==/UserScript==

//! Note: See the comments below for an updated version
// https://gist.github.com/KevinBatdorf/d772807789a79f07453c144c772d6a76#gistcomment-3720594

// Requires Tampermonkey 
// Chrome - https://chrome.google.com/webstore/detail/tampermonkey/dhdgffkkebhmkfjojejmpbldmpobfkfo?hl=en
// FF - https://addons.mozilla.org/en-US/firefox/addon/tampermonkey/

// Find me on Twitter: https://twitter.com/kevinbatdorf

const prefix = 'tw'

// Grab all components
const code = Array.from(document.querySelectorAll('button')).filter(b => b.getAttribute('@click') && b.getAttribute('@click').includes('ClipboardCode'))
code.forEach(node => {

    // Override clipboard button
    node.addEventListener('click', function(event) {
        event.preventDefault()

        // Get the htmls
        const content = event.target.closest('[id^=component-]').querySelector('[x-ref=htmlClipboardCode]')

        // Add it to the dom for parsing
        const temp = document.createElement('div')
        temp.innerHTML = content.value

        // Replace all classes
        temp.querySelectorAll('[class]').forEach((el) => {
            const prefixed = Array.from(el.classList).map(
                c => {
                    // Check for variants
                    const variant = c.split(':').slice(0, -1)
                    const rule = c.split(':').slice(-1)
                    return variant.length ? `${variant.join(':')}:${prefix}-${rule.join()}` : `${prefix}-${rule.join()}`
                }
            )
            
            // Remove the old and add the new!
            el.className = ''
            el.classList.add(...prefixed)
        })

        // Insert back into a text area to be copied
        const textarea = document.createElement('textarea')
        textarea.textContent = temp.innerHTML
        document.body.appendChild(textarea)

        setTimeout(() => {
            // Do the copy thing!
            textarea.select()
            document.execCommand('copy')
            document.body.removeChild(textarea)
        }, 50)
    })
})

It's fine. People will see the comment and use yours. I'll edit it with a note.