Issue Type: Bug

These tsconfig.json values are completely breaking intellisense for my project:

		"module": "commonjs",
		"moduleResolution": "node",

When I take these out, and restart ts server, it works fine, if i put them back in and restart ts server, it stops working.

Observed result:
When typing in something in code, such as Time, which vscode should be suggesting me to import from somewhere, no dropdown appears at all, and if I do ctrl+space, it says no suggestions. Again, I remove those 2 config options, restart ts server, and it works fine.

Expected result:
Should show a dropdown pretty much in 99% of cases when im typing, doesnt show a dropdown AT ALL.

Reproduction:
You could try use my repo to reproduce: https://github.com/oldschoolgg/oldschoolbot

Note that, these 2 config options come from the eslint-config-bamboo that im extending in the tsconfig.json there, however I am using these 2 tsconfigs locally for debugging this: https://gist.github.com/gc/fa1110fa28e7a66ac0b1ee42a73435a6

to test that its working, go to index.ts and type in the word roll and/or Time - both should definitely be giving suggestions.

removing these 2 options however breaks other stuff, and isnt a viable solution for me to use. hopefully someone canhelp me find the root cause.

note: I have tried completely, entirely nuking vscode (including all my settings) from my PC, clearing all node_modules and caches, and reinstalling - and that didnt fix it.

VS Code version: Code 1.49.3 (2af051012b66169dde0c4dfae3f5ef48f787ff69, 2020-10-02T17:57:01.595Z)
OS version: Windows_NT x64 10.0.18362