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Frequently Asked Questions

Can I use multiple reporters at the same time?

Yes, you may do so by authoring a new reporter that composes the reporters you are interested in using.

For example, to use reporters named first-reporter and second-reporter, create a new module that invokes them both:

var first = require('first-reporter');
var second = require('second-reporter');

exports.reporter = function(results, data, opts) {
  first.reporter(results, data, opts);
  second.reporter(results, data, opts);

Save that to a file named dual-reporter.js, and run JSHint with:

$ jshint --reporter ./dual-reporter.js

...and you should see the output of first-reporter followed by the output of second-reporter.

This approach is especially well-suited to using the different reporters' output in different contexts (for instance, e-mailing one reporter's output to the development team and feeding another reporter's output to a continuous integration system). You might output a custom delimiter between the output streams in order to demultiplex them. Alternatively, you might replace the global process.stdout value with another stream between reporter invocations. This latter solution is somewhat fragile because it involves mutating global state--a future release of JSHint may expose a safer mechanism for this operation.

See the documentation on JSHint's "reporter" API for more details on creating your own reporter.

JSHint skips some unused variables

If your code looks like this:

function test(a, b, c) {
  return c;

Then JSHint will not warn about unused variables a and b if you set the unused option to true. It figures that if unused arguments are followed by used ones, it was a conscious decision and not a typo. If you want to warn about all unused variables not matter where they appear, set the unused option to strict:

/*jshint unused:strict */
function test(a, b, c) {
  return c;

// Warning: unused variable 'a'
// Warning: unused variable 'b'

For more information see: options/unused.