Create linter for Eta templates

We should create a linter for Eta templates, similar to https://github.com/RyanZim/EJS-Lint. This would be very useful for checking the validity of Eta templates – Eta, like EJS, uses new Function() to generate compiled template functions, and new Function() doesn’t throw detailed syntax errors.

EJS-Lint replaces everything outside a scriptlet tag with whitespace (to retain line & column numbers) and then runs the resulting (hopefully) valid JS through node-syntax-error to check for errors.

We probably want to do something similar to this, but use a modified version of Eta’s parser to handle multi-line comments and strings correctly.

Ideally the linter would be available as an Eta plugin using the processTemplate hook and as a command-line tool.

[nebrelbug]

@shadowtime2000 that’s great!

I agree that would probably be best. Since I added you to the eta-dev team, you should be able to create a new repo. Let me know once it’s published!

[shadowtime2000]

I think we should leave it up to the user to add the various eta related globals to the ESLint globals field.