Check prototype pollution in JS libraries

Usage

1. install JS libraries you want to test:

$ npm init -y
$ npm install json5 lodash

2. run ./find-pollution.sh with those libraries as arguments:

$ ./find-pollution.sh [library_name...]

Notes

Based on prototype-pollution-nsec18 repo.

This check is not 100 % correct, but it's a good enough heuristic.