Add node modules and new code for release (#57)

Co-authored-by: taakleton <taakleton@users.noreply.github.com>

node_modules/exit/test/fixtures/create-files.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+rm 10*.txt
+for n in 10 100 1000; do
+  node log.js 0 $n stdout stderr &> $n-stdout-stderr.txt
+  node log.js 0 $n stdout &> $n-stdout.txt
+  node log.js 0 $n stderr &> $n-stderr.txt
+done