react/display-name doesn't trigger when functional compo includes named function

[dwelle]

When a functional component includes a named function in its body, the react/display-name rule does not trigger for the wrapping component.

export default function () {

    function fetchData () {} // <-- causes react/display-name not to trigger

    return <div/>;
}

• eslint: 5.15.3
• eslint-plugin-react: 7.12.4

[ljharb]

Although I'd suggest never creating a function inside an SFC (inside the render path), this definitely sounds like a bug.

[dwelle]

When using hooks, you almost exclusively often create functions inside FCs.

[ljharb]

That doesn't mean it's a good idea, it just means hooks might encourage that pattern.