src/index.ts spawns a new process to run script/promise-rejections-cmd, once
without an argument to trigger the failure, and once with an argument to trigger
one.
When main() is called, we print the Promise resolution when no errors are detected,
and the Promise rejection when errors are detected.
❯ tsc -p .
❯ node lib/index.js
# First two lines come from the script completing normally
STDOUT: Promise rejections cmd (stdout)
RESOLVED I got a close event and command was successful
# Next lines are what happens when we trigger an error and write some stuff to stderr
STDOUT: Promise rejections cmd (stdout)
Detected error running command:
Here's my error:
Error: STDERR Error thrown from promise-rejections-cmd (stderr)
STDERR Another from promise-rejections-cmd (stderr)