`ReadableStreamReadDoneResult` shouldn't be generic and should have `value: undefined`

[kraenhansen]

As per https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamDefaultReader/read#return_value and https://streams.spec.whatwg.org/#ref-for-default-reader-read%E2%91%A0

If the stream becomes closed, the promise will be fulfilled with an object of the form { value: undefined, done: true }.

The current types are:

https://github.com/microsoft/TypeScript/blob/cea0b61320ee69ae863cc9d7bf873113eb420e3b/src/lib/dom.generated.d.ts#L1622-L1625

interface ReadableStreamReadDoneResult<T> {
    done: true;
    value?: T;
}

While I'd expect them to be

interface ReadableStreamReadDoneResult {
    done: true;
    value: undefined;
}

I believe this is a result of:

TypeScript-DOM-lib-generator/inputfiles/addedTypes.jsonc

Lines 1290 to 1310 in f4e507c

	"ReadableStreamReadDoneResult": {
	"name": "ReadableStreamReadDoneResult",
	"typeParameters": [
	{
	"name": "T"
	}
	],
	"members": {
	"member": {
	"done": {
	"name": "done",
	"overrideType": "true",
	"required": true
	},
	"value": {
	"name": "value",
	"overrideType": "T"
	}
	}
	}
	},

[juanepedroso]

This issue hurts. Is the fix stuck?

[kraenhansen]

Is the fix stuck?

I don't think there's something fundamentally broken in my approach over in #1676, it probably "just" needs a rebase and a review.

Unfortunately I got away from this and don't have the capacity to follow through with the change right now. If anyone wants to take take over the PR - feel free to snatch the changes I made so far 💙