Magic Move

Several code steps in one block, moving between them with a click each. The animation is @shikijs/magic-move, loaded only when a deck uses it.

Use a fence with four backticks and magic-move after the language. Inside it, write normal fences, one per step:

````md magic-move {lines: true}
```js {*|1|2-3}
let count = 1
function add() { count++ }
```

```ts
let count: number = 1
const add = () => count += 1
```
````

• Each inner fence is one step. Ranges inside a step add clicks of their own, so {*|1|2-3} is three steps.
• Options after magic-move: lines, at (the first click) and duration in milliseconds.
• magicMoveDuration in the headmatter sets the duration for the deck, and magicMoveCopy: false removes the copy button.
• A [title] before the options gives a title bar.

Only some shiki.magicMove options of Slidev are read. The stagger is fixed.