Test migration to jest by hand

Apparently using regular expressions is way easier.

test/pull/pull.js

@@ -0,0 +1,7 @@
+const pull = (arr, ...args) => {
+let argState = Array.isArray(args[0]) ? args[0] : args;
+let pulled = arr.filter((v, i) => !argState.includes(v));
+arr.length = 0;
+pulled.forEach(v => arr.push(v));
+};
+module.exports = pull;