Test migration to jest by hand

Apparently using regular expressions is way easier.

test/unzipWith/unzipWith.js

@@ -0,0 +1,10 @@
+const unzipWith = (arr, fn) =>
+arr
+.reduce(
+(acc, val) => (val.forEach((v, i) => acc[i].push(v)), acc),
+Array.from({
+length: Math.max(...arr.map(x => x.length))
+}).map(x => [])
+)
+.map(val => fn(...val));
+module.exports = unzipWith;