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`'a' instanceof String => false` and `true instanceof Boolean => false`, the capitalized versions of JavaScript primitive types are avoided because they lead us to think that we're dealing with actual instances of those classes, when we're most often not (as in our case).
In TypeScript, we avoid the usage of `Object`, favoring `object` instead. Also, we use `void` as the return type of functions that return `undefined`, this indicates that we don't really care that it outputs `undefined`, it is `void`, which means that it's nothing and the return of it should be ignored.
By casting `'overflowX'|'overflowY'` to the `overflowProperty`, we tell the compiler (or type checker) which property we'll be accesing from the `CSSStyleDeclaration`. That's useful for IDEs such as VSCode, that uses the TypeScript parser to analyze the code. It can also be useful if we decide to add a type checker to the codebase later on.
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Hey, I was reading the source code to better understand how the smooth scroll works and how one would polyfill it. I found myself making some comments to better understand the code and I thought it could be a small contribution for future developers also trying to understand it.
This PR:
prettierto its latest versionAll changes are cosmetic and I totally understand if you decide not to merge this PR since it's not addressing any existing issues.
Thanks for the good code, I've learned a lot!