No completions for `.json` files with `--resolveJsonModule`

[mhegazy]

TypeScript Version: 2.9.0-dev.201xxxxx

Search Terms:

Code
With #22167 in, add --resolveJsonModule to your tscofig.json, and add a new test.json file.
Request completions:

import { } from "./|"; // request completions here

Expected behavior:
./test.json shows in completion list.

Actual behavior:
./test.json does not show.

Playground Link:

Related Issues:

[mhegazy]

same applies for var x: typeof import("./test.json");