function cdataOpenInside(code) {
    const value = constants.cdataOpeningString

    if (code === value.charCodeAt(index++)) {
      effects.consume(code)

      if (index === value.length) {
        // // Do not form containers.
        // tokenizer.concrete = true
        return self.interrupt ? ok : continuation
      }

      return cdataOpenInside
    }

    return nok(code)
  }
After `<![`, inside CDATA, expecting `CDATA[`.

```markdown
> | <![CDATA[>&<]]>
       ^^^^^^
```

@type {State}