- For example: A JS minification plugin should not have an option that adds a header as well

1. Your plugin shouldn't do things that other plugins are responsible for

- It should not concat, [gulp-concat](https://github.com/contra/gulp-concat) does that

- If it's a common but optional use case, document that your plugin is often used with another plugin

- Make use of other plugins within your plugin! This reduces the amount of code you have to write and ensures a stable ecosystem.

1. Your plugin **must be tested**