Deno.Process.prototype.stderrOutput - Deno documentation
method Deno.Process.prototype.stderrOutput
Process.prototype.stderrOutput(): Promise<Uint8Array>

Buffer the stderr until EOF and return it as Uint8Array.

You must set stderr to "piped" when creating the process.

This calls close() on stderr after its done.

Return Type

Promise<Uint8Array>