VSCode's intellisense gets super slow in a Yarn Workspaces project

[lffg]

Issue Type: Bug

My VSCode intellisense gets super slow while I'm coding in a project that is using a Yarn Workspaces and @types/styled-components. I've already updated all the @types dependecies but it still slow.

I've recorded a video to show how slow it is:

https://www.youtube.com/watch?v=ibHDE5jHw4M

Node that it has to reload when I've deleted the "theme" prop.

Some notes

I have this sc-theme.d.ts file (maybe this file is causing the issues...?):

import theme from '../src/providers/Theme/theme'

type ThemeInterface = typeof theme

declare module 'styled-components' {
  // eslint-disable-next-line import/prefer-default-export
  export interface DefaultTheme extends ThemeInterface {}
}

If you want more info, please help me know.

Thanks in advance. :)

---

VS Code version: Code 1.34.0 (a622c65, 2019-05-15T21:59:22.738Z)
OS version: Darwin x64 18.5.0

System Info

Item	Value
GPU Status	2d_canvas: enabled checker_imaging: disabled_off flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: enabled rasterization: enabled surface_synchronization: enabled_on video_decode: enabled webgl: enabled webgl2: enabled
Load (avg)	2, 2, 2
Memory (System)	16.00GB (5.18GB free)
Process Argv	.
Screen Reader	no
VM	0%

Extensions (14)

Extension	Author (truncated)	Version
emojisense	bie	0.5.1
path-intellisense	chr	1.4.2
bracket-pair-colorizer	Coe	1.0.61
vscode-eslint	dba	1.9.0
prettier-vscode	esb	1.9.0
auto-rename-tag	for	0.0.15
vscode-styled-components	jpo	0.0.26
edge	luo	0.3.2
dotenv	mik	1.0.1
vscode-docker	Pet	0.6.2
material-icon-theme	PKi	3.8.0
code-settings-sync	Sha	3.2.9
highlight-matching-tag	vin	0.9.2
vscode-wakatime	Wak	2.1.2

(1 theme extensions excluded)

[mjbvz]

Does this reproduce in the latest VS Code insiders build with all extensions disabled?

[lffg]

No. The insiders build with no extensions (and with them) works absolutely fine. Nice new icon, by the way. :)

[mjbvz]

Thanks for verifying

Closing this as a duplicate of microsoft/TypeScript#30819