Na documentação do JSHint, Interface da linha de comando > Especificando Opções de Lintagem :
The jshint executable is capable of applying linting options specified in an external JSON-formatted file. Such a file might look like this:
{ "curly": true, "eqeqeq": true, "nocomma": true }
jshint will look for this configuration in a number of locations, stopping at the first positive match:
- The location specified with the --config flag
- A file named package.json located in the current directory or any parent of the current directory (the configuration should be declared as the jshintConfig attribute of that file's JSON value)
- A file named .jshintrc located in the current directory or any parent of the current directory
- A file named .jshintrc located in the current user's "home" directory (where defined)
Portanto, no seu arquivo de configuração .json, inclua:
"asi": true