Code Block Line Numbers

Enable line numbering for code blocks.

Global Setting

Enable for all code blocks in headmatter:

---
lineNumbers: true
---

Per-Block Setting

```ts {6,7}{lines:true,startLine:5}
function add(
  a: Ref<number> | number,
  b: Ref<number> | number
) {
  return computed(() => unref(a) + unref(b))
}
```

Options

• lines: true/false - Enable/disable line numbers
• startLine: number - Starting line number (default: 1)

With Line Highlighting

Use {*} as placeholder when combining with other features:

```ts {*}{lines:true,startLine:5}
// code here
```