Rule request: AvoidNewObjectCmdlet

[iRon7]

The New-Object cmdlet is basically* legacy.
Since PowerShell V3.0 (12 years ago), PowerShell supports type accelerators which perform much better, see: PowerShell scripting performance considerations / object creation.

*) Exceptions left there (e.g. with the use of the [-ComObject] <String> parameter)

Therefore I think that it makes sense to have a AvoidNewObjectCmdlet rule.

related: Avoid New-Object Hashtable #60

[iRon7]

You might also consider to link this type of rules to the #Requires -Version x.x statement.
(In case it doesn't exist in the concerned script: simply suppress the warning.)

[bergmeister]

Agree with it, feel free to contribute a rule for it :-)

[iRon7]

Agree with it, feel free to contribute a rule for it :-)

Might that be a PowerShell based rule? (FYI: I don't have enough C# known to write something like that in C#)

[bergmeister]

Agree with it, feel free to contribute a rule for it :-)

Might that be a PowerShell based rule? (FYI: I don't have enough C# known to write something like that in C#)

To be included with PSScriptAnalyzer, it would be C# because PowerShell based ones are too slow and CPU intensive to run by default for the millions of PSSA users. Alternatively you could write your custom PowerShell rule and open source it for the community to use.