support JavaScript

[andre15silva]

The JavaScript ecosystem is huge.
To support projects that use NPM as its build tool, we must:

• Scope the test frameworks to support (e.g.: Jest, Mocha, Cypress). Overview: https://blog.logrocket.com/comparing-best-node-js-unit-testing-frameworks/
• Understand how to identify which testing framework is being used. We will likely need to parse the package.json file for both the dependencies and to understand what the npm commands actually do under-the-hood (since they are defined in this file and change from project to project)
• Understand how to retrieve test results. This will likely require instrumenting the workflow (e.g., for Jest: https://github.com/jest-community/awesome-jest#reporters)
• Implement integration tests for each test tool and bug finding strategy