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gsscoder/Test-Property.ps1

Last active April 6, 2020 15:20
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Properly way to test object properties existence in PowerShell with strict mode activated
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Test-Property.ps1
Set-StrictMode -Version Latest
function Test-Property([Parameter(ValueFromPipeline)] $object, [string] $name) {
try { $name -cin $object.PSObject.Properties.Name }
catch { $false }
}
$path = '/Users/someone/temp/file.json'
$json = $path | Get-Content -Raw | ConvertFrom-Json
[bool] $exists = $json.someKey | Test-Property -name 'someOtherKey'
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