[vue@2.0.0-rc.6] props default not works when propsData is undefined in instance creation, 1.0 is ok

[modten]

Vue.js version

2.0.0-rc.6

Reproduction Link

https://jsfiddle.net/qgey2hkn/

Steps to reproduce

Open reproduction links, check alert

What is Expected?

alert true

What is actually happening?

alert undefined

But if passing propsData, it alerts true.

[rajibahmed]

I think I saw in the docs you must initialise every props. Vue2 and Vue1 has different philosophy on this issue.

[LinusBorg]

Root components shouldn't have props in 2.0. it doesn't make sense in 2.0 anyway because there is no way to set them except with propsData, so you can put the values in data anyway.

It works for child components: https://jsfiddle.net/5naacdqL/1/

That being said, it should work for the root I guess. We will look into it.