Run commands/npm scripts in parallel

This is a super minimalistic package for running shell commands or npm scripts in parallel without any dependencies.

Scope

Complete lines from child processes are written to stdout.
Ansi escape codes are not handled in any way.
If any child process is terminated or exit's with a non zero exit code, this will exit with code 1.

mx-parallel [...commands]

# Run npm scripts "a" and "b":
mx-parallel npm:a npm:b

# Run all npm scripts matching a pattern:
mx-parallel npm:start:*