vim with syntastic and eslint: show warnings

Question

I'm using Vim with the syntastic plugin and eslint.

When I save a JavaScript file, I can see errors come up just fine, but I can't get the warnings to show.

Here's what I have in my .vimrc:

let g:syntastic_javascript_checkers = ['eslint']

I installed eslint with:

npm install eslint -g

I'm running Linux Mint 17

How do I get warnings to appear?

Answer 1

It turns out the issue here was that the "warnings" I thought I had in my file were not actually warnings. When I put an actual warning in my file it showed up correctly.

Some advice I learned though was to first run the file on the command-line directly using eslint similar to this:

eslint /path/to/file.js

Then compare those results to what you see in Vim.

Another tip is that you can change rules on the fly with comment syntax like this:

/*eslint <rule>=1*/