BREAKING(unstable): Improve Deno.spawn() stdio API (#14919)

- "SpawnOutput" extends "ChildStatus" instead of composing it
- "SpawnOutput::stdout", "SpawnOutput::stderr", "Child::stdin", 
"Child::stdout" and "Child::stderr" are no longer optional, instead 
made them getters that throw at runtime if that stream wasn't set 
to "piped". 
- Remove the complicated "<T extends SpawnOptions = SpawnOptions>" 
which we currently need to give proper type hints for the availability of 
these fields. Their typings for these would get increasingly complex 
if it became dependent on more options (e.g. "SpawnOptions::pty" 
which if set should make the stdio streams unavailable)

1 files changed, 0 insertions, 0 deletions

diff --git a/test_util/std b/test_util/std
-Subproject 2e180b039369a06d46adf506142b597c7ea28f3
+Subproject ec11374217b94e8d0ca604e669faabe5ade5d9a