HTMLOptionElement gives error Property 'value' does not exist on type 'Element'.

[quantuminformation]

I'm getting this in this case of an HTMLOptionElement value

It should have that value as HTMLOptionsCollection contains HTMLOptionElement elements:
readonly options: HTMLOptionsCollection;

interface HTMLOptionsCollection extends HTMLCollectionOf<HTMLOptionElement> {
    length: number;
    selectedIndex: number;
    add(element: HTMLOptionElement | HTMLOptGroupElement, before?: HTMLElement | number): void;
    remove(index: number): void;
}

Using typescript@2.2.1

My workaround was to use an unnecessary cast
let newValue = (target.options[newSelectedIndex] as HTMLOptionElement).value

[saschanaz]

Probably this is because the indexer of HTMLCollectionOf only returns Element, not HTMLOptionElement.

[quantuminformation]

The generic should return type of T right?

[saschanaz]

That's right.

[marcus-petty]

Please fix!

[quantuminformation]

That would be awesome!

[Andarist]

I believe that this can be closed since this is very much accessible today:

const select = {} as HTMLSelectElement
select.options[0].value // ok! :)

cc @jakebailey