Find unused exports or unused packages in your project.

npm install unexport --global

1. Install the project with "npm install unexport --global"
2. Your project need to have unexport.json, you can auto generate using "unexport init"
3. Run "unexport go" and find the unused exports and node modules

1. -p/--packages: show only unused installed packages
2. -f/--file: show only usused exports

Note: Currently this project don't support alias or CommonJS module syntax (ie require)