Need to handle Node <4 users better (show better error message, possibly lock down version)

The version of ESLint you are using.

3.x

The problem you want to solve.

Provide better error messages when users running an unsupported Node engine version are using ESLint.

Your take on the correct solution to problem.

Two basic options:

1. Detect Node engine version and throw an exception for unsupported versions (using package.json to avoid hardcoding, and ideally using a pre-existing package)
2. Attempt to catch certain exceptions (anything indicating an ES6 syntax error basically) in bin/eslint.js and display a nicer message to the user

Not sure which is the better option (or if there is a superior third option). Let’s discuss!

[alberto]

I’m not sure we should do anything here. It’s clearly documented in the migration guide and npm already shows a warning.

[mysticatea]

@epoberezkin I think that linting is not required in all node versions in CI, so you can consider a use of if-node-version-like tool.