Does not work with create-react-app

[mifi]

Same issue as #46:
TypeError: querystring.unescape is not a function

But in create-react-app it is not possible to configure bundler (webpack) with aliases. I'm currently using https://github.com/nisaacson/aws-v4-sign-small but it would be nice if aws4 would work out of the box too.

[mhart]

This is a bug with webpack – they really shouldn't be bundling such an old version of querystring – probably best to file a bug over there if you haven't already. If create-react-app can't be configured, then that's a limitation with that library as well, so perhaps file over there too.

[mhart]

@mifi I included your commit in the latest version of aws4, published as v1.7.0 – thanks, and hopefully this issue won't pop up anymore!