Updates JS/TS imports on directory rename

[mjbvz]

Follow up on #19439

Request

1. In a js project:

index.js
jsconfig.json
sub/
    a.js
    b.js

with index.js:

import {a} from './sub/a'
import {b} from './sub/b'

1. Rename sub to sub2

Expected behavior
All import paths that reference sub get updated to sub2:

index.js:

import {a} from './sub2/a'
import {b} from './sub2/b'

[mjbvz]

Depends on microsoft/TypeScript#24260

[AlCalzone]

Should this be working in 1.24.1 with TypeScript 2.9.2 or do I have to wait for another VSCode update?

[mjbvz]

No you need to be on vscode insiders