Are HTMLCollection and NodeList iterables?

Question

In ES6, an iterable is an object that allows for... of, and has a Symbol.iterator key.

Arrays are iterables, as are Sets and Maps. The question is: are

Answer 1

For anyone arriving here from trying to iterate on NodeList using TypeScript. I found this issue with the fix https://github.com/microsoft/TypeScript/issues/4947 and this is the tsconfig.json you'll need for it:

{
  "compilerOptions": {
    "lib": ["es2017", "dom", "dom.iterable"],
    "downlevelIteration": true
  }
}

The problem error I was getting:

Type 'NodeListOf' is not an array type.

And this was the code that was triggering that problem:

[...document.querySelectorAll('#md-view a')]