Test migration to jest by hand

Apparently using regular expressions is way easier.

test/initializeArrayWithRange/initializeArrayWithRange.js

@@ -0,0 +1,3 @@
+const initializeArrayWithRange = (end, start = 0, step = 1) =>
+Array.from({ length: Math.ceil((end + 1 - start) / step) }).map((v, i) => i * step + start);
+module.exports = initializeArrayWithRange;