Copy code MDX component

import { useRef, useState, Fragment } from 'react'
 
const CodeBlock = (props: {
className: string | undefined
children: React.ReactChildren
}): JSX.Element => {
const textInput = useRef(null)
const [hovered, setHovered] = useState(false)
const [copied, setCopied] = useState(false)
 
const onEnter = () => {
setHovered(true)
}
 
const onExit = () => {
setHovered(false)
setCopied(false)
}
 
const onCopy = () => {
setCopied(true)
navigator.clipboard.writeText(textInput.current.textContent)
setTimeout(() => {
setCopied(false)
}, 3000)
}
 
return (
 
<div ref={textInput} onMouseEnter={onEnter} onMouseLeave={onExit} className='relative'>
{hovered && (
<button
aria-label='Copy code'
type='button'
className={`absolute right-3 top-3 w-7 h-7 p-1 rounded border-2 bg-gray-200 dark:bg-[#282e33] ${
            copied
              ? 'focus:outline-none focus:border-green-500 border-green-500 dark:border-green-400 dark:focus:border-green-400'
              : 'border-gray-100 dark:border-gray-300'
          }`}
onClick={onCopy} >
<svg
xmlns='http://www.w3.org/2000/svg'
viewBox='0 0 24 24'
stroke='currentColor'
fill='none'
className={
copied ? 'text-green-500 dark:text-green-400' : 'text-gray-700 dark:text-gray-300'
} >
{copied ? (
<Fragment>
<path
                  strokeLinecap='round'
                  strokeLinejoin='round'
                  strokeWidth={2}
                  d='M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4'
                />
</Fragment>
) : (
<Fragment>
<path
                  strokeLinecap='round'
                  strokeLinejoin='round'
                  strokeWidth={2}
                  d='M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2'
                />
</Fragment>
)}
</svg>
</button>
)}
 
      <pre>{props.children}</pre>
    </div>
 
)
}
 
export default CodeBlock

import { useRef, useState, Fragment } from 'react'
 
const CodeBlock = (props: {
className: string | undefined
children: React.ReactChildren
}): JSX.Element => {
const textInput = useRef(null)
const [hovered, setHovered] = useState(false)
const [copied, setCopied] = useState(false)
 
const onEnter = () => {
setHovered(true)
}
 
const onExit = () => {
setHovered(false)
setCopied(false)
}
 
const onCopy = () => {
setCopied(true)
navigator.clipboard.writeText(textInput.current.textContent)
setTimeout(() => {
setCopied(false)
}, 3000)
}
 
return (
 
<div ref={textInput} onMouseEnter={onEnter} onMouseLeave={onExit} className='relative'>
{hovered && (
<button
aria-label='Copy code'
type='button'
className={`absolute right-3 top-3 w-7 h-7 p-1 rounded border-2 bg-gray-200 dark:bg-[#282e33] ${
            copied
              ? 'focus:outline-none focus:border-green-500 border-green-500 dark:border-green-400 dark:focus:border-green-400'
              : 'border-gray-100 dark:border-gray-300'
          }`}
onClick={onCopy} >
<svg
xmlns='http://www.w3.org/2000/svg'
viewBox='0 0 24 24'
stroke='currentColor'
fill='none'
className={
copied ? 'text-green-500 dark:text-green-400' : 'text-gray-700 dark:text-gray-300'
} >
{copied ? (
<Fragment>
<path
                  strokeLinecap='round'
                  strokeLinejoin='round'
                  strokeWidth={2}
                  d='M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4'
                />
</Fragment>
) : (
<Fragment>
<path
                  strokeLinecap='round'
                  strokeLinejoin='round'
                  strokeWidth={2}
                  d='M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2'
                />
</Fragment>
)}
</svg>
</button>
)}
 
      <pre>{props.children}</pre>
    </div>
 
)
}
 
export default CodeBlock