PowerShell - execute script block in specific scope
The call operator (&) always uses a new scope. Instead, use the dot source (.) operator:
$ErrorActionPreference = "Stop"function describe() { $aaaa = 0; . before { $aaaa = 2; }; . after { $aaaa; } }function before( [scriptblock]$sb ) { . $sb }function after( $sb ) { . $sb }describeNote the use of . function to invoke the function in same scope as where `$aaaa is defined.