AvoidMultipleTypeAttributes

Severity Level: Warning

Default state: Always enabled

Description

This rule detects parameters that have multiple type specifiers applied to them. Parameters shouldn't have multiple type specifiers. When you apply more than one type attribute to a parameter, it can lead to unexpected type coercion or runtime errors.

Each parameter should have exactly one type specifier to ensure predictable behavior and type safety.

Example

Noncompliant

function Test-Script
{
    [CmdletBinding()]
    Param
    (
        [switch]
        [int]
        $Switch
    )
}

Compliant

function Test-Script
{
    [CmdletBinding()]
    Param
    (
        [switch]
        $Switch
    )
}

Configure rule

This rule is always enabled and isn't configurable. Use one of the following methods to avoid using this rule:

• Create a custom rule configuration file to include only the rules you want or exclude the rules you don't want.
• Add the appropriate rule suppression attributes to your code to suppress the rule for specific code blocks. For more information, see the Suppressing rules section of Using PSScriptAnalyzer.