syntastic complaining about ES6 module syntax
Syntastic will use JSHint to check JavaScript syntax if it's available (which I recommend over jslint).
JSHint supports es6 syntax with the esnext flag, which includes support for the export and import module syntax.
I suggest adding a .jshintrc file to your project to control JSHint's behavior (and thus Syntastic's) for your entire project:
{ "esnext": true}Note: be careful, since using the esnext flag will add support for all of es6's new language sytax that JSHint currently supports, not just the module syntax.
Note: esnext has now been deprecated in favour of the esversion syntax.
{ "esversion": 6}
To work around this, I'd suggest the following steps as recommended here: Configure Vim for React:
Install eslint and babel-eslint:
npm install -g eslint babel-eslintCreate a local .eslintrc config in your project or a global ~/.eslintrc configuration:
{ "parser": "babel-eslint", "env": { "browser": true, "node": true }, "settings": { "ecmascript": 6 }, "rules": { "strict": 0 // you can add more rules if you want }}Finally, configure syntastic to use eslint:
let g:syntastic_javascript_checkers = ['eslint']