🐊Putout plugin adds ability to apply dot notation. Checkout out in 🐊Putout Editor.

Property accessors provide access to an object's properties by using the dot notation or the bracket notation.

(c) MDN

npm i @putout/plugin-apply-dot-notation

{
    "rules": {
        "apply-dot-notation": "on"
    }
}

a.hello.world;

a.hello.world;
a[1];

MIT