HTMLInputElement have incompatible type for "selectionDirection" and setSelectionRange

[xileftenurb]

TypeScript Version: 3.6.0-dev.20190717
Search Terms:
selectionDirection HTMLInputElement DOM definition
Code

const el : HTMLTextAreaElement = new HTMLTextAreaElement();
const direction = el.selectionDirection;
el.setSelectionRange(el.selectionStart, el.selectionEnd, direction );

Expected behavior:
No error, as el.selectionDirection is definitely a good value for selectionDirection

Actual behavior:
tsc throw an error because el.selectionDirection is of type "string" and el.setSelectionRange only accept "forward" | "backward" | "none"

solution :
HTMLInputElement.selectionDirection should be of type : "forward" | "backward" | "none" instead of type string. in lib.dom.d.ts at line 7332.

Related Issues:
the bug was introduced by the fixing of setSelectionRange as discuted in issue #20419 and PR #20459

[BuckAMayzing]

@RyanCavanaugh - I put out a PR for this one a couple of weeks back. It doesn't look like it has had anyone look at it yet. Do you know if there's someone I should tag on the PR?

[ShuiRuTian]

@sandersn Hi, I thought this issue has been fixed by the PR and could be closed.