Format-StackTrace.ps1

function Format-StackTrace
{
    param (
        [Parameter(Mandatory = $true, ValueFromPipeline = $true)]
        [System.Management.Automation.ErrorRecord]$ErrorRecord,
        
        [switch]$RawOutput
    )

    process
    {
    
        if (!$RawOutput)
        {
            $formatted = @();
            $stackTrace = $ErrorRecord.ScriptStackTrace -split "`n"
        
            foreach ($line in $stackTrace)
            {
                if ($line -match 'at (.*), (.*): line (\d+)')
                {
                    $function = $matches[1];
                    $script = $matches[2];
                    $lineNumber = $matches[3];
                
                    $formatted += "Function: $function`r`n" +
                    "Script:   $script`r`n" +
                    "Line:     $lineNumber`r`n"
                }
            }
            $formatted -join "`r`n";
        } 
        else 
        {
            $error_record.Exception.ToString();
        }
    }
}

##############
#### Tests
##############
try { 1/0 } catch { $error_record = $_ }; $formatted_trace = $error_record | Format-StackTrace ; Write-Output $formatted_trace

# Function: <ScriptBlock>
# Script:   <No file>
# Line:     1

try { 1/0 } catch { $error_record = $_ }; $formatted_trace = $error_record | Format-StackTrace -RawOutput ; Write-Output $formatted_trace

# System.Management.Automation.RuntimeException: Attempted to divide by zero.
#  ---> System.DivideByZeroException: Attempted to divide by zero.
#   --- End of inner exception stack trace ---
#   at System.Management.Automation.ExceptionHandlingOps.CheckActionPreference(FunctionContext funcContext, Exception exception)
#   at System.Management.Automation.Interpreter.ActionCallInstruction`2.Run(InterpretedFrame frame)
#   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame frame)
#   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame frame)