Test migration to jest by hand

Apparently using regular expressions is way easier.

test/geometricProgression/geometricProgression.js

@@ -0,0 +1,5 @@
+const geometricProgression = (end, start = 1, step = 2) =>
+Array.from({ length: Math.floor(Math.log(end / start) / Math.log(step)) + 1 }).map(
+(v, i) => start * step ** i
+);
+module.exports = geometricProgression;