Minimal script to gzip and brotli compress a file

CompressFile.ps1

[CmdletBinding()]
param (
    [Parameter(Mandatory=$true)]
    [string]
    $FilePath
)

$OutputBrotliFilePath = "$FilePath.br";
$OutputGzipFilePath = "$FilePath.gz";

$InputFileStream = [System.IO.File]::OpenRead($FilePath);
$OutputFileStream = [System.IO.File]::Create($OutputBrotliFilePath);
$BrotliCompressionStream = [System.IO.Compression.BrotliStream]::new($OutputFileStream, [System.IO.Compression.CompressionMode]::Compress);
$InputFileStream.CopyTo($BrotliCompressionStream);

$BrotliCompressionStream.Dispose();
$OutputFileStream.Dispose();


$OutputFileStream = [System.IO.File]::Create($OutputGzipFilePath);
$GzipCompressionStream = [System.IO.Compression.GZipStream]::new($OutputFileStream, [System.IO.Compression.CompressionMode]::Compress);
$InputFileStream.CopyTo($GzipCompressionStream);

$GzipCompressionStream.Dispose();
$OutputFileStream.Dispose();
$InputFileStream.Dispose();