Lowercasing headers to match express/node http behavior

[naz]

refs #33 (issue in the upstream dependency)

Node's native http module lowercases incoming headers in the request object (reference). The lowrcasing does not happen when using reqresnext library causing behavior different to production. For example when a miXed-caSe-header: some_value is passed in with an incoming HTTP request, the req['mixed-case-header'] is undefined.

For reference this is how the node-mocks-http, referenced in this project's readme, solves a very similar issue:

mockRequest.headers = options.headers ? utils.convertKeysToLowerCase(options.headers) : {};

And excerpt from utils lib:

module.exports.convertKeysToLowerCase = function(map) {
    var newMap = {};
    for(var key in map) {
        newMap[key.toLowerCase()] = map[key];
    }
    return newMap;
};

I think a correct solution here would be setting lowercased headers to fully mimic express' behavior.

[antongolub]

🎉 This issue has been resolved in version 1.7.0 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)
• v1.7.0

Your semantic-release bot 📦🚀