function contentStart(code) {
    return initialPrefix > 0 && markdownSpace(code)
      ? factorySpace(
          effects,
          beforeContentChunk,
          types.linePrefix,
          initialPrefix + 1
        )(code)
      : beforeContentChunk(code)
  }
Before code content, not a closing fence.

```markdown
  | ~~~js
> | alert(1)
    ^
  | ~~~
```

@type {State}