A reporter that discards all warnings about mixed tabs and errors

notabs.js

/**
 * notabs.js
 *
 * A reporter that discards all warnings about mixed tabs and errors.
 * This file was based on our default reporter so output is the same.
 *
 * Usage:
 *   jshint myfile.js --reporter=notabs.js
 */

module.exports = {
    reporter: function (results) {
        var len = results.length;
        var str = "";

        results.forEach(function (result) {
            var file = result.file;
            var error = result.error;

            if (error.reason === "Mixed spaces and tabs.") {
	        return;
	    }

            str += file  + ': line ' + error.line + ', col ' +
                error.character + ', ' + error.reason + '\n';
        });

        if (str) {
            process.stdout.write(str + "\n" + len + ' error' + ((len === 1) ? '' : 's') + "\n");
        }
    }
};

Since it wasn't clear to me, @jlgrall's suggested options can be dropped into your ~/.jshintrc config file or (I think) SublimeLinter's jshint_options config block.

// .jshintrc
{
  "smarttabs": true
}

// .jshintrc
{
  "-W099": true
}

// SublimeLinter.sublime-settings
{
  "jshint_options":
  {
    "-W099": true
  }
}