PowerShell / PowerShell/PSScriptAnalyzer

Assignment of invalid values to local action preference variables

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Issue - New Rule Up-for-Grabs
Dominant language
C#
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Forks
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Avg merge
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Merged PRs (30d)
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Description

Not global action preference variables are not strongly typed. As a result,
anything can be assigned to them, not necessarily valid values. For example,
typos will not be reported as errors, unlike with global variables.

In other words, PSSA should report issues like this, mind the typo:

$VerbosePreference = 'Cotninue'

References:

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing how PSScriptAnalyzer handles assignments to PowerShell action preference variables, then review the Local-ActionPreference example and the referenced behavior. Done means an invalid local value such as the misspelled 'Cotninue' is reported as an analyzer issue, while valid values remain accepted.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, powershell
Domain
tooling
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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