When a state template is replaced, the ViewModel is detached and unbound but not attached or bound

[rluba]

I'm submitting a bug report

• Library Version: 0.3.0

Please tell us about your environment:

• Operating System: OSX 10.14.6

• Node Version: 10.16.3

• NPM Version: 6.9.0

• JSPM OR Webpack AND Version webpack 4.41.0

• Browser: all

• Language: ESNext

Current behavior: When changing the template of a route component, the state instance ("view model"?) gets it’s detached() and unbind() handlers called, but neither attached() nor bind() are called again - leading to lots of NPEs in our case.

When changing the template of a regular component, neither detached() nor unbind() are called.

Expected/desired behavior:

Route components should act like regular components: Either call all lifecycle methods during HMR or none.