Workaround when a module takes too long to run Get-Help

[PrzemyslawKlys]

Issue Description

I am experiencing a problem with... Get-Help taking very long time on some modules and impacting PowerShell extension.

Spawned from issue: #2627

Get-Help -Name Merge-CCBranchesBySquash -ErrorAction Ignore

As per @TylerLeonhardt quote:

This is taking like 20 seconds from the logs. (which is what we run to get more information about the command to display next to completions)

As per comment of @SeeminglyScience

It's part of it for sure, but as it turns out they have a pretty solid reason.

Honestly though, even if they had that Get-Help would still take just as long to run probably. Short of a complete overhaul of the completion API's to be based on entirely around static analysis, there's not much that can be done about that.

A workaround would need to consider that we (users) have no clue something is taking a too long time to load. So this would have to be detected and suggested to be ignored.

Possible solution by @TylerLeonhardt

I guess we could offer a setting to disable running Get-Help and just show syntax like we do if no help comes back... but that's sad :(

We could expose our exclusion list(s) via settings:

https://github.com/PowerShell/PowerShellEditorServices/blob/master/src/PowerShellEditorServices/Services/PowerShellContext/Utilities/CommandHelpers.cs#L20-L50

Which basically contain PowerShellGet and PackageManagement atm (to prevent PackageManagement from loading...)

Then you could exclude AWS's cmdlets/noun somehow.

Yeah we can possibly detect how long it takes and recommend ignoring a module...

Environment Information

Visual Studio Code

Name	Version
Operating System	Windows_NT x64 10.0.19041
VSCode	1.45.1
PowerShell Extension Version	2020.6.0

PowerShell Information

Name	Value
PSVersion	5.1.19041.1
PSEdition	Desktop
PSCompatibleVersions	1.0 2.0 3.0 4.0 5.0 5.1.19041.1
BuildVersion	10.0.19041.1
CLRVersion	4.0.30319.42000
WSManStackVersion	3.0
PSRemotingProtocolVersion	2.3
SerializationVersion	1.1.0.1

Visual Studio Code Extensions

Visual Studio Code Extensions(Click to Expand)

Extension	Author	Version
bracket-pair-colorizer-2	CoenraadS	0.1.4
code-settings-sync	Shan	3.4.3
github-linker	gimenete	0.2.3
gitlens	eamodio	10.2.1
grammarly	znck	0.12.1
markdown-all-in-one	yzhang	3.0.0
material-icon-theme	PKief	4.1.0
powershell-preview	ms-vscode	2020.6.0
project-manager	alefragnani	11.0.1
vscode-markdownlint	DavidAnson	0.36.0
vscode-pull-request-github	GitHub	0.16.0
vscode-toggle-quotes	BriteSnow	0.3.2
vscode-wakatime	WakaTime	4.0.0
xml	DotJoshJohnson	2.5.0

[andyleejordan]

Was this resolved @PrzemyslawKlys? Noticed it was closed.