Empty documentation if file is all exports

Input code

```
export {combine} from './combine'
export {sample} from './sample'

export type {Domain} from 'effector/domain'
export {createDomain} from 'effector/domain'

export type {Event} from 'effector/event'
export {
createEvent,
forward,
fromObservable,
chord,
filter,
} from 'effector/event'

export type {Effect} from 'effector/effect'
export {createEffect} from 'effector/effect'

export type {Store} from 'effector/store'
export {
createStore,
createStoreObject,
setStoreName,
extract,
createApi,
restore,
restoreEvent,
restoreEffect,
restoreObject,
withProps,
} from 'effector/store'

export {Kind, clearNode, createGraph as createNode, step} from 'effector/stdlib'
export {launch} from 'effector/kernel'
export type {kind} from 'effector/stdlib'

export {
invariant,
warning,
isUnit,
isStore,
isEvent,
isEffect,
isDomain,
is,
} from 'effector/validate'
export {version} from 'effector/flags'

//eslint-disable-next-line
export * as blocks from 'effector/blocks'
```

Output docs

```

### Table of Contents
```

* What version of documentation.js are you using?: 10.1.0
* How are you running documentation.js (on the CLI, Node.js API, Grunt, other?):CLI