DOM lib doesn't have the concrete event signatures like the React synthetic event declared?

[zheeeng]

TypeScript Version: 2.7.0

Search Terms:

Code

declare const $input: HTMLInputElement

// Property 'value' does not exist on type 'EventTarget'
$input.onchange = e => { console.log(e.target.value) }

Expected behavior:

The e.target be inferred as HTMLInputElement instead of EventTarget.

The HTMLInputElement could be signatured as below or other proposals:

interface HTMLElement<E> extends Element {
    onchange: (this: E, ev: Event) => any;
}

interface HTMLInputElement extends HTMLElement<HTMLInputElement> {
}

Actual behavior:

Error Property 'value' does not exist on type 'EventTarget'

Playground Link:
Playground

[mhegazy]

I think this is the same issue as #299, the request to make Event interface generic with its target as the argument.

[typescript-bot]

Automatically closing this issue for housekeeping purposes. The issue labels indicate that it is unactionable at the moment or has already been addressed.