Based on Leetcode #1
Run this leetcode problem locally instead of in their web editor.
1.) Install node.js.
2.) run npm install from within cloned repo to acquire the required dependencies.
3.) npm run test to execute the test cases (using the jest testing framework
note: jest-html-reporter is generating an HTML report if you prefer this over the console test report. Code coverage flag is enabled for fun in package.json with "collectiveCoverage":true