JS/TS Intellisense with WSL

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Issue Type: Performance Issue

Intelisense for JS/TS hangs indefinitenly on "initializing JS/TS language features when using WSL2 with visual studio (all newest versions) on windows 10.
Example project: https://github.com/elastic/kibana

Extension version: 0.53.4
VS Code version: Code 1.53.2 (622cb03f7e070a9670c94bae1a45d78d7181fbd4, 2021-02-11T11:48:04.245Z)
OS version: Windows_NT x64 10.0.19042
Remote OS version: Linux x64 4.19.128-microsoft-standard

System Info

Item	Value
CPUs	AMD Ryzen 9 5950X 16-Core Processor (32 x 3394)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on protected_video_decode: unavailable_off rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	63.95GB (39.86GB free)
Process Argv	--crash-reporter-id 56677151-f648-4bda-a74a-61a8b5ce797c
Screen Reader	no
VM	0%

Item	Value
Remote	WSL: Ubuntu-20.04
OS	Linux x64 4.19.128-microsoft-standard
CPUs	AMD Ryzen 9 5950X 16-Core Processor (4 x 3393)
Memory (System)	17.58GB (6.64GB free)
VM	0%

Process Info

CPU %	Mem MB	   PID	Process
    0	    85	 25108	code main
    0	    45	  2680	   utility
    0	    87	  6040	   window (Issue Reporter)
    0	   301	  8012	   window (● index.ts - kibana [WSL: Ubuntu-20.04] - Visual Studio Code)
    0	    80	 20216	     extensionHost
    0	    63	 23824	       electron_node wslDaemon.js 
    0	     6	 16880	         C:\Windows\System32\wsl.exe -d Ubuntu-20.04 sh -c '"$VSCODE_WSL_EXT_LOCATION/scripts/wslServer.sh" 622cb03f7e070a9670c94bae1a45d78d7181fbd4 stable .vscode-server 0  '
    0	     6	 23848	           C:\Windows\system32\lxss\wslhost.exe {40ee4010-dbab-4466-8825-4b215f42f80d} 472 500 504 {c1a64e62-1420-4e6f-aa47-fe07d64c292e}
    0	    13	 12648	             console-window-host (Windows internal process)
    0	    11	 25160	           console-window-host (Windows internal process)
    0	   142	  9644	   gpu-process
    0	    23	 18896	   crashpad-handler
    0	    97	 22952	   shared-process

Remote: WSL: Ubuntu-20.04
CPU %	Mem MB	   PID	Process
    4	     0	 24118	remote agent
    0	     0	 24429	   extensionHost
    0	     0	 24671	     /home/marius/.vscode-server/bin/622cb03f7e070a9670c94bae1a45d78d7181fbd4/node /home/marius/.vscode-server/extensions/dbaeumer.vscode-eslint-2.1.14/server/out/eslintServer.js --node-ipc --clientProcessId=24429
    0	     0	 24719	     /home/marius/.vscode-server/bin/622cb03f7e070a9670c94bae1a45d78d7181fbd4/node /home/marius/.vscode-server/bin/622cb03f7e070a9670c94bae1a45d78d7181fbd4/extensions/json-language-features/server/dist/node/jsonServerMain --node-ipc --clientProcessId=24429
    0	     0	 25050	     /home/marius/.vscode-server/bin/622cb03f7e070a9670c94bae1a45d78d7181fbd4/node --max-old-space-size=3072 /home/marius/.vscode-server/bin/622cb03f7e070a9670c94bae1a45d78d7181fbd4/extensions/node_modules/typescript/lib/tsserver.js --serverMode partialSemantic --useInferredProjectPerProjectRoot --disableAutomaticTypingAcquisition --cancellationPipeName /tmp/vscode-typescript1000/18097d9cd8a86cc9d59b/tscancellation-37d4d1f7473e73bad945.tmp* --globalPlugins typescript-vscode-sh-plugin --pluginProbeLocations /home/marius/.vscode-server/bin/622cb03f7e070a9670c94bae1a45d78d7181fbd4/extensions/typescript-language-features --locale en --noGetErrOnBackgroundUpdate --validateDefaultNpmLocation
    0	     0	 24440	   watcherService
    0	     0	 24451	   /bin/bash
    0	     0	 25089	   /bin/sh -c /usr/bin/ps -ax -o pid=,ppid=,pcpu=,pmem=,command=
    0	     0	 25090	     /usr/bin/ps -ax -o pid=,ppid=,pcpu=,pmem=,command=

Workspace Info


|  Remote: WSL: Ubuntu-20.04|    Folder (kibana): more than 20602 files|      File types: ts(4021) tgz(4008) md(3701) map(1838) js(1458) png(540)
|                  json(352) asciidoc(325) tsx(266) jar(262)
|      Conf files: package.json(60) tsconfig.json(52) webpack.config.js(5)
|                  github-actions(3) grunt.js(1);

A/B Experiments

vsliv368:30146709
vsreu685:30147344
python383:30185418
vspor879:30202332
vspor708:30202333
vspor363:30204092
vstry244cf:30256637
pythonvsdeb440:30248342
pythonvsded773:30248341
pythonvspyt600cf:30251589

Reproduce the hang with the Kibana workspace under WSL: Ubuntu-20.04, then inspect the reported tsserver.js process and the remote extension host. Done means JS/TS IntelliSense completes initialization instead of remaining indefinitely on the loading message.

Written by the indexing model from the issue text.

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