Code Magic Move

````md magic-move
```js
console.log(`Step ${1}`)
```
```js
console.log(`Step ${1 + 1}`)
```
```ts
console.log(`Step ${3}` as string)
```
````

````md magic-move {at:4, lines: true}
```js {*|1|2-5}
let count = 1
function add() {
  count++
}
```

Non-code blocks in between are ignored.

```js {*}{lines: false}
let count = 1
const add = () => count += 1
```
````