One of queries is undefined and watch $route will fire twice

[webrsb]

Version

2.0.1 or higher

Reproduction link

http://jsfiddle.net/xvs5euab/2/

Steps to reproduce

Click first link (foo_undefined)

What is expected?

Same as next link "foo_bar", just show alarm only one time

What is actually happening?

It show alarm two times

[posva]

Once #1568 is merged, you can use null, but I really think you shouldn't use undefined as your query values. For the moment, you can delete them or simply not include them. I'm marking this as an improvement but I really recommend you to not include query's parameters that are undefined, it better to remove them

[webrsb]

Thanks for providing advice. In some case, query's parameters may be removed by user from URL that I can't prevent it.

[posva]

If the property is not in the query it won't trigger the watcher twice. The reason it happens twice right now is because the query gets normalized

[posva]

Note: Would be good to prevent normalization from triggering the navigation twice