This is mentioned in the release notes for 1.0.0 [1]. Their suggested solution is to disable built-in JavaScript validation entirely and rely on ESLint instead

This is mentioned in the release notes for 1.0.0 [1]. Their suggested solution is to disable built-in JavaScript validation entirely and rely on ESLint instead. > Some users want to use syntax constructs like the proposed ES7 Object Rest/Spread Properties. However, these are currently not supported by Salsa and are flagged as errors. For users who still want to use these ES7 features, we have revived the javascript.validate.enable setting to disable all built-in syntax checking. [1] https://code.visualstudio.com/Updates#_100-march-2016 https://code.visualstudio.com/Updates#_100-march-2016