TypeScript: Auto imports (`getExportInfoMap`) extremely slow

Issue Type: Performance Issue

trying to use ctrl + space loading… for a period of time when I disabled it from builtin extensions the list is shown as expected

please vs-code team solve that problem because that builtin extension is so essential for us as a web developer best regards thanks.

VS Code version: Code 1.61.0 (ee8c7def80afc00dd6e593ef12f37756d8f504ea, 2021-10-07T18:13:09.652Z) OS version: Windows_NT x64 10.0.19043 Restricted Mode: No

System Info

Item	Value
CPUs	Intel® Core™ i5-2430M CPU @ 2.40GHz (4 x 2395)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: unavailable_off opengl: enabled_on rasterization: unavailable_off skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: unavailable_off
Load (avg)	undefined
Memory (System)	7.91GB (2.46GB free)
Process Argv	–crash-reporter-id d08f27d4-fc58-4cb3-87cf-fb19d0a2ef1e
Screen Reader	no
VM	0%

Process Info

CPU %	Mem MB	   PID	Process
    0	    79	  9868	code main
    0	    87	  3704	   shared-process
    0	    67	  4632	     ptyHost
    0	     6	  1120	       console-window-host (Windows internal process)
    0	    48	  9336	       C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe
    0	     5	  1088	         C:\WINDOWS\system32\cmd.exe /c ""C:\Program Files\nodejs\npm.cmd" start"
    0	    34	 11440	           "C:\Program Files\nodejs\\node.exe"  "C:\Program Files\nodejs\\node_modules\npm\bin\npm-cli.js" start
    0	     5	 11568	             electron_node app.js 
    0	    28	 11600	               electron_node nodemon.js app.js 
    0	    41	 12692	                 "C:\Program Files\nodejs\node.exe" app.js
    0	    22	  3772	   crashpad-handler
    0	   186	  5456	   gpu-process
    0	    34	  5736	   utility
    0	    82	  6732	   window (Issue Reporter)
    0	   208	  8128	   window (auth.js - starter - Visual Studio Code)
    0	    61	  1380	     watcherService
    0	   143	  5748	     extensionHost
    0	    64	   124	       electron_node eslintServer.js 
    0	    62	  1504	       electron_node serverMain.js 
    0	    63	  2688	       electron_node server.js 
    0	   624	  4948	       electron_node tsserver.js 
    0	    70	  6304	         electron_node typingsInstaller.js typesMap.js 
    0	    64	  5700	       electron_node server.js 
    0	    74	  7056	       electron_node tsserver.js 
    0	    70	 10684	     searchService

Workspace Info

|  Window (auth.js - starter - Visual Studio Code)
|    Folder (starter): 28 files
|      File types: js(16) json(2) env(1) gitignore(1) MD(1)
|      Conf files: package.json(1);

Extensions (77)

Extension	Author (truncated)	Version
better-comments	aar	2.1.0
codesnap	adp	1.3.4
format-selection-as-html	adr	2.3.0
spaces-inside-braces	Air	0.4.0
Bookmarks	ale	13.2.2
copy-relative-path	ale	0.0.2
auto-add-brackets	ali	0.12.0
html-end-tag-labels	ant	0.8.0
generate-wt-scheme	bla	0.0.5
npm-intellisense	chr	1.4.0
path-intellisense	chr	2.4.0
bracket-pair-colorizer	Coe	1.0.61
bracket-pair-colorizer-2	Coe	0.2.1
split-html-attributes	dan	1.0.10
vscode-markdownlint	Dav	0.44.4
vscode-eslint	dba	2.2.1
dotfiles-syntax-highlighting	dot	0.1.0
pug-formatter	duc	0.6.0
vscode-html-css	ecm	1.10.2
EditorConfig	Edi	0.16.4
vscode-npm-script	eg2	0.3.22
magick-image-reader	ely	0.5.0
vsc-material-theme-icons	equ	2.2.1
prettier-vscode	esb	9.0.0
php-debug	fel	1.19.0
vscode-firefox-debug	fir	2.9.4
vscode-npm	fkn	3.3.0
auto-close-tag	for	0.5.12
auto-rename-tag	for	0.1.8
vscode-mysql	for	0.4.1
shell-format	fox	7.1.1
gc-excelviewer	Gra	3.0.44
output-colorizer	IBM	0.1.2
phpcs	ika	1.0.5
php-cs-fixer	jun	0.2.8
cmderrunner	jus	0.1.2
vscode-colorize	kam	0.11.1
vscode-gutter-preview	kis	0.27.1
node-module-intellisense	lei	1.5.0
rainbow-csv	mec	1.9.1
dotenv	mik	1.0.1
HTMLHint	mka	0.10.0
vscode-filesize	mkx	3.1.0
vscode-scss	mrm	0.10.0
python	ms-	2021.10.1317843341
vscode-pylance	ms-	2021.10.0
jupyter	ms-	2021.9.1001312534
jupyter-keymap	ms-	1.0.0
jupyter-renderers	ms-	1.0.3
live-server	ms-	0.2.9
vscode-typescript-next	ms-	4.5.20211010
vscode-typescript-tslint-plugin	ms-	1.3.3
debugger-for-chrome	msj	4.13.0
debugger-for-edge	msj	1.0.15
vscode-javascript-comment	Nic	0.0.8
vscode-javascript-snippet	Nic	0.1.2
vetur	oct	0.34.1
indent-rainbow	ode	8.2.0
vscode-html-scss	P-d	0.0.42
nested-comments	phi	2.3.1
csv-to-table	php	1.3.0
material-icon-theme	PKi	4.10.0
heroku-command	pko	0.0.8
polacode	pnp	0.3.4
vscode-css-peek	pra	4.2.0
LiveServer	rit	5.6.1
color-manager	roy	0.6.3
html5-boilerplate	sid	1.1.1
html-to-css-autocompletion	sol	1.1.2
sass-indented	syl	1.8.18
es6-string-html	Tob	2.11.0
remove-empty-lines	use	0.0.8
highlight-matching-tag	vin	0.10.1
vscodeintellicode	Vis	1.2.14
rainbow-tags	vol	0.3.2
material-theme	zhu	3.13.2
cmder-here	zyq	0.0.2

(3 theme extensions excluded)

A/B Experiments

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vsreu685:30147344
python383cf:30185419
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vspor363:30204092
vstes627:30244334
pythonvspyt639:30300192
pythontb:30283811
pythonptprofiler:30281270
vshan820:30294714
vstes263cf:30335440
vscoreces:30358480
pythondataviewer:30285071
pythonvsuse255:30340121
vscod805:30301674
pythonvspyt200:30340761
binariesv615:30325510
vsccppwt:30378364
pythonvssor306:30344512
bridge0708:30335490
pygetstartedt2:30371810
dockerwalkthru:30377721
bridge0723:30353136
pythonrunftest32:30373476
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pythonvspyt187:30373474
pydsgst2:30361792
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vssld246:30379911

About this issue

Original URL
State: closed
Created 3 years ago
Comments: 45 (11 by maintainers)

Commits related to this issue

chore: Revert to typescript 4.4.4 until https://github.com/microsoft/TypeScript/issues/46735 is fixed — committed to xdy/xdy-pf2e-workbench by xdy 3 years ago

Most upvoted comments

@moataz9 can you try disabling TypeScript > Preferences: Include Package JSON Auto Imports and seeing how much that improves things?

andrewbranch on Nov 9, 2021

I have this issue and do not use mongoose. It’s been so slow the past couple of months that I’ve started typing everything out. Not much to contribute but didn’t want anyone caught up on mongoose specifically.

whengely on Oct 29, 2021

This is excellent repro information @atsikov and @kmoschcau. However, it’s a completely separate issue from the one reported by @moataz9, so I’ve forked your issue to #46948. If you have any further discussion, please continue it there. Let’s keep this issue specific to getExportInfoMap being super slow as shown in the TS Server log (which I haven’t been able to repro but need to try more).

andrewbranch on Nov 29, 2021

@moataz9 hyy reinstalled nodejs and vs code worked

Uninstall vs code from control panel
delete the hidden save data from
%UserFolder%.vscode.
%UserFolder%\AppData\Roaming\Code
reinstall vs code

ullaskunder3 on Oct 16, 2021

When I work on a small node project (using less than 4 packages) the suggestions list shown up normally. when I add more packages to use in that project, it leads the suggestions list doesn’t appear normally (loading … for a long period sometimes it take 2 min to show up and VS code in the task manager take more than normally in CPU measure as I mentioned previously )

here are the packages I use in my project

{
"dependencies": {
    "bcryptjs": "^2.4.3",
    "cors": "^2.8.5",
    "dotenv": "^10.0.0",
    "express": "^4.17.1",
    "express-async-errors": "^3.1.1",
    "express-rate-limit": "^5.3.0",
    "helmet": "^4.6.0",
    "http-status-codes": "^2.1.4",
    "joi": "^17.4.0",
    "jsonwebtoken": "^8.5.1",
    "mongoose": "^5.13.2",
    "rate-limiter": "^0.2.0",
    "swagger-ui-express": "^4.1.6",
    "xss-clean": "^0.1.1",
    "yamljs": "^0.3.0"
  },
  "devDependencies": {
    "nodemon": "^2.0.9"
  }
}

moataz9 on Oct 13, 2021

@andrewbranch turns out, it’s not only about vs code, yarn tsc is also incredibly slow. Not sure why I didn’t notice type checking issues after the upgrade on my main project.

4.5.2 created 30 times more (intermediate?) types and consumed 8 times more memory.

TS 4.4.4 extended diagnostics

Files:                         50
Lines of Library:           26160
Lines of Definitions:       24762
Lines of TypeScript:           14
Lines of JavaScript:            0
Lines of JSON:                  0
Lines of Other:                 0
Nodes of Library:          112958
Nodes of Definitions:       60457
Nodes of TypeScript:           55
Nodes of JavaScript:            0
Nodes of JSON:                  0
Nodes of Other:                 0
Identifiers:                58865
Symbols:                    39464
Types:                      28967
Instantiations:             86282
Memory used:               93470K
Assignability cache size:   17107
Identity cache size:           62
Subtype cache size:             0
Strict subtype cache size:      0
I/O Read time:              0.01s
Parse time:                 0.48s
ResolveModule time:         0.02s
ResolveTypeReference time:  0.00s
Program time:               0.53s
Bind time:                  0.21s
Check time:                 0.64s
printTime time:             0.00s
Emit time:                  0.00s
Total time:                 1.39s

TS 4.5.2 extended diagnostics

Files:                          50
Lines of Library:            25009
Lines of Definitions:        24762
Lines of TypeScript:            14
Lines of JavaScript:             0
Lines of JSON:                   0
Lines of Other:                  0
Nodes of Library:           112478
Nodes of Definitions:        60453
Nodes of TypeScript:            55
Nodes of JavaScript:             0
Nodes of JSON:                   0
Nodes of Other:                  0
Identifiers:                 58582
Symbols:                     39008
Types:                     1048793
Instantiations:             135356
Memory used:               724704K
Assignability cache size:  7007111
Identity cache size:            27
Subtype cache size:              0
Strict subtype cache size:       0
I/O Read time:               0.03s
Parse time:                  0.49s
ResolveModule time:          0.02s
ResolveTypeReference time:   0.00s
Program time:                0.57s
Bind time:                   0.22s
Check time:                 93.30s
printTime time:              0.00s
Emit time:                   0.00s
Total time:                 94.09s

atsikov on Nov 29, 2021

I’m experiencing the same issue. With 4.5.2 it takes 2 minutes to simply load a type hint on hover (Controller from react-hook-form in this particular case). Our project is indeed huge, but the same operation with vs code’s built-in 4.4.3 is instant.

I have no idea what’s happening under the hood, but these are the two things from the server log that look very slow in 4.52:

"command":"geterr" - almost two minutes until "event":"requestCompleted" against ~10ms for 4.4.3
44::encodedSemanticClassifications-full: elapsed time (in milliseconds) 109280.8950 against less than 1s first time and less than 10ms later for 4.4.3

Part of TS 4.5.2 server log

Info 2001 [19:47:33.826] request:
    {"seq":41,"type":"request","command":"geterr","arguments":{"delay":0,"files":["/Users/aleksei.tsikov/git/project/src/Component.tsx"]}}
Perf 2002 [19:47:33.827] 41::geterr: async elapsed time (in milliseconds) 0.3917
Info 2003 [19:47:33.828] event:
    {"seq":0,"type":"event","event":"syntaxDiag","body":{"file":"/Users/aleksei.tsikov/git/project/src/Component.tsx","diagnostics":[]}}
Info 2004 [19:49:29.994] event:
    {"seq":0,"type":"event","event":"requestCompleted","body":{"request_seq":41}}
Info 2005 [19:49:29.996] request:
    {"seq":42,"type":"request","command":"getApplicableRefactors","arguments":{"file":"/Users/aleksei.tsikov/git/project/src/Component.tsx","startLine":1,"startOffset":1,"endLine":1,"endOffset":1}}
Perf 2006 [19:49:30.009] 42::getApplicableRefactors: elapsed time (in milliseconds) 13.2598
Info 2007 [19:49:30.009] response:
    {"seq":0,"type":"response","command":"getApplicableRefactors","request_seq":42,"success":true,"body":[{"name":"Convert export","description":"Convert default export to named export","actions":[{"name":"Convert default export to named export","description":"Convert default export to named export","kind":"refactor.rewrite.export.named","notApplicableReason":"Could not find export statement"},{"name":"Convert named export to default export","description":"Convert named export to default export","kind":"refactor.rewrite.export.default","notApplicableReason":"Could not find export statement"}]},{"name":"Convert import","description":"Convert namespace import to named imports","actions":[{"name":"Convert namespace import to named imports","description":"Convert namespace import to named imports","kind":"refactor.rewrite.import.named","notApplicableReason":"Selection is not an import declaration."}]},{"name":"Convert import","description":"Convert named imports to namespace import","actions":[{"name":"Convert named imports to namespace import","description":"Convert named imports to namespace import","kind":"refactor.rewrite.import.namespace","notApplicableReason":"Selection is not an import declaration."}]},{"name":"Extract Symbol","description":"Extract function","actions":[{"name":"Extract Function","description":"Extract function","kind":"refactor.extract.function","notApplicableReason":"Cannot extract empty range."}]},{"name":"Extract Symbol","description":"Extract constant","actions":[{"name":"Extract Constant","description":"Extract constant","kind":"refactor.extract.constant","notApplicableReason":"Cannot extract empty range."}]},{"name":"Extract type","description":"Extract type","actions":[{"name":"Extract to typedef","description":"Extract to typedef","kind":"refactor.extract.typedef","notApplicableReason":"Selection is not a valid type node"},{"name":"Extract to type alias","description":"Extract to type alias","kind":"refactor.extract.type","notApplicableReason":"Selection is not a valid type node"},{"name":"Extract to interface","description":"Extract to interface","kind":"refactor.extract.interface","notApplicableReason":"Selection is not a valid type node"}]},{"name":"Move to a new file","description":"Move to a new file","actions":[{"name":"Move to a new file","description":"Move to a new file","kind":"refactor.move.newFile","notApplicableReason":"Selection is not a valid statement or statements"}]},{"name":"Add or remove braces in an arrow function","description":"Add or remove braces in an arrow function","actions":[{"name":"Add braces to arrow function","description":"Add braces to arrow function","kind":"refactor.rewrite.arrow.braces.add","notApplicableReason":"Could not find a containing arrow function"},{"name":"Remove braces from arrow function","description":"Remove braces from arrow function","kind":"refactor.rewrite.arrow.braces.remove","notApplicableReason":"Could not find a containing arrow function"}]},{"name":"Convert to template string","description":"Convert to template string","actions":[{"name":"Convert to template string","description":"Convert to template string","kind":"refactor.rewrite.string","notApplicableReason":"Can only convert string concatenation"}]},{"name":"Infer function return type","description":"Infer function return type","actions":[{"name":"Infer function return type","description":"Infer function return type","kind":"refactor.rewrite.function.returnType","notApplicableReason":"Return type must be inferred from a function"}]}]}
Info 2008 [19:49:30.009] request:
    {"seq":43,"type":"request","command":"projectInfo","arguments":{"file":"/Users/aleksei.tsikov/git/project/src/Component.tsx","needFileNameList":false}}
Perf 2009 [19:49:30.009] 43::projectInfo: elapsed time (in milliseconds) 0.1021
Info 2010 [19:49:30.009] response:
    {"seq":0,"type":"response","command":"projectInfo","request_seq":43,"success":true,"body":{"configFileName":"/Users/aleksei.tsikov/git/project/tsconfig.json","languageServiceDisabled":false}}
Info 2011 [19:49:30.011] request:
    {"seq":44,"type":"request","command":"encodedSemanticClassifications-full","arguments":{"file":"/Users/aleksei.tsikov/git/project/src/Component.tsx","start":1277,"length":3642,"format":"2020"}}
Perf 2012 [19:51:19.295] 44::encodedSemanticClassifications-full: elapsed time (in milliseconds) 109280.8950
Info 2013 [19:51:19.295] response:
    {"seq":0,"type":"response","command":"encodedSemanticClassifications-full","request_seq":44,"success":true,"body":{"spans":[1281,8,2561,1312,6,2561,1342,8,2561,1368,6,2561,1403,29,2825,1436,11,1793,1449,11,1536,1463,17,1544,1496,11,1792,1678,11,1792,1702,5,1537,1712,5,2561,1720,4,1536,1728,15,2561,1769,16,2057,1787,3,1536,1791,5,1536,1803,5,1793,1810,15,1793,1844,5,2857,1851,12,2857,1865,7,2089,1874,8,2857,1887,7,2816,1895,10,1536,1913,13,2561,1936,9,2561,1947,15,1792,1970,8,2561,1980,8,2816,1989,10,2816,2004,4,272,2023,6,2561,2031,10,2816,2046,4,272,2066,4,2561,2100,11,2560,2113,5,2857,2120,4,2089,2126,6,2089,2137,11,2816,2150,6,1793,2158,10,1536,2177,3,2056,2181,4,2560,2186,23,3072,2218,9,2561,2229,6,1792,2236,9,2560,2253,8,2561,2263,6,1792,2270,8,2560,2279,7,3088,2296,6,2561,2304,6,1792,2311,6,2560,2318,7,3088,2350,12,2089,2365,4,2088,2371,4,2560,2393,11,2089,2406,19,2089,2430,13,2816,2444,12,2088,2467,11,2089,2481,7,2816,2501,5,1792,2514,3,3088,2518,8,1793,2533,5,2561,2540,8,1792,2549,3,2560,2554,5,2561,2561,8,1792,2570,5,2560,2586,5,1792,2607,9,2089,2619,5,2856,2646,8,2089,2657,5,2856,2800,15,1792,2868,7,2088,2933,5,1793,3044,11,2088,3288,7,2088,3348,5,1793,3475,5,1792,3481,5,2560,3514,5,1793,3549,8,2089,3560,10,2816,3571,5,1792,3598,5,1792,3604,8,3072,3613,8,2088,3641,8,2856,3660,7,2816,3668,8,2088,3789,7,2088,3847,5,1793,3999,6,2561,4007,8,2088,4035,5,2561,4042,8,2816,4051,8,2088,4107,5,1792,4113,5,2560,4146,5,1793,4175,5,1792,4181,8,3072,4190,10,2816,4201,5,1792,4381,12,2856,4394,10,1793,4408,5,2856,4414,10,1792,4475,9,2088,4618,29,2824,4648,6,2088,4673,11,2088,4705,7,2056,4754,6,2088,4865,19,2088],"endOfLineState":0}}
Info 2014 [19:51:19.297] request:
    {"seq":47,"type":"request","command":"provideInlayHints","arguments":{"file":"/Users/aleksei.tsikov/git/project/src/Component.tsx","start":714,"length":4205}}
Perf 2015 [19:51:19.350] 47::provideInlayHints: elapsed time (in milliseconds) 52.9589
Info 2016 [19:51:19.350] response:
    {"seq":0,"type":"response","command":"provideInlayHints","request_seq":47,"success":true,"body":[{"text":": PropsWithChildren<CellProps...","position":{"line":36,"offset":21},"kind":"Type","whitespaceBefore":true},{"text":": Element","position":{"line":36,"offset":22},"kind":"Type","whitespaceBefore":true},{"text":"date:","position":{"line":36,"offset":56},"kind":"Parameter","whitespaceAfter":true},{"text":": PropsWithChildren<CellProps...","position":{"line":49,"offset":21},"kind":"Type","whitespaceBefore":true},{"text":": Element","position":{"line":49,"offset":22},"kind":"Type","whitespaceBefore":true},{"text":"value:","position":{"line":50,"offset":34},"kind":"Parameter","whitespaceAfter":true},{"text":": (queryStatus: QueryStatus) ...","position":{"line":63,"offset":36},"kind":"Type","whitespaceBefore":true},{"text":": Props","position":{"line":79,"offset":72},"kind":"Type","whitespaceBefore":true},{"text":": Element","position":{"line":79,"offset":73},"kind":"Type","whitespaceBefore":true},{"text":"props:","position":{"line":80,"offset":74},"kind":"Parameter","whitespaceAfter":true},{"text":"date:","position":{"line":83,"offset":26},"kind":"Parameter","whitespaceAfter":true},{"text":"amount:","position":{"line":83,"offset":50},"kind":"Parameter","whitespaceAfter":true},{"text":"date:","position":{"line":83,"offset":37},"kind":"Parameter","whitespaceAfter":true},{"text":"date:","position":{"line":84,"offset":26},"kind":"Parameter","whitespaceAfter":true},{"text":"mutationFn:","position":{"line":89,"offset":60},"kind":"Parameter","whitespaceAfter":true},{"text":": AxiosPromise<RevPTransactio...","position":{"line":89,"offset":80},"kind":"Type","whitespaceBefore":true},{"text":": RevPTransaction[]","position":{"line":97,"offset":21},"kind":"Type","whitespaceBefore":true},{"text":"data:","position":{"line":99,"offset":62},"kind":"Parameter","whitespaceAfter":true},{"text":": { label: string; 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atsikov on Nov 26, 2021

Same issue here. After 10-15min intellisense becomes unbearable and I have to keep restarting the editor. I have a fairly simple file with about 300 lines of code for a Babel plugin using @babel/core, but it eventually becomes slow regardless of the project.

I tried both on Linux and Windows and have the same exact issue on both OSs.

elclanrs on Nov 4, 2021

Facing the same problems on my node project. I found out that it works just fine before I install node_modules but after installing packages it becomes extremely slow. Here are the packages that i’m using

devb119 on Oct 28, 2021

@moataz9 @mjbvz hello sir, I think Typescript intelligence causing delay because of mongoose

ullaskunder3 on Oct 25, 2021