Can't edit component data if no props

[kevinmarrec]

Version

5.0.0-beta.4

Browser and OS info

Chrome 72 / Windows 10

Steps to reproduce

1. Define a minimal component with an array of any type in data (array of numbers for example)

export default {
  data () {
    return {
      someArray: [1, 2]
    }
  }
}

2. Try do edit the array in Vue DevTools

What is expected?

Edit or deleting an item works

What is actually happening?

Edit, deleting (and also increment/decrement) throws an error :
Cannot read property 'someArray' of undefined

Stack Trace

---

Editing the array manually from root edit button works (JSON edit)

[Akryum]

I don't reproduce this on dev branch.

[davidwaterston]

I don't reproduce this on dev branch.

By 'dev branch' do you mean Beta 5?
I've just updated to B5 via https://chrome.google.com/webstore/detail/vuejs-devtools/ljjemllljcmogpfapbkkighbhhppjdbg and this is still broken i.e. it is not possible to edit the data within an object or array, as described by @kevinmarrec.

Version
5.0.0-beta.5

Browser and OS info
Chrome 72.0.3626.121 (Official Build) (64-bit) / MacOS Mojave 10.14.3.

[kevinmarrec]

@Akryum Issue is still present and reproducible on Beta 5.

The issue happens almost for each feature when the variable is an array :

• Adding a value in an array
• Remove an item from an array
• Editing an item in an array
• Incrementing an item (if it's numeric) in an array

Error: Cannot read property 'NAME_OF_THE_ARRAY' of undefined (with NAME_OF_THE_ARRAY being the name of your array variable).

[sp1ker]

I don't reproduce this on dev branch.

You should edit in devtools instead in vue app. Component must be without props.

@kevinmarrec I fixed bug. Wait merge by @Akryum if good commit.

[kevinmarrec]

@sp1ker Great !

What do you mean by component without props ?
If the component has no props, it makes devTools buggy for all other datas of the component ?

[sp1ker]

If the component has no props, it makes devTools buggy for all other datas of the component ?

Yes

[kevinmarrec]

Oh alright, need to wait @Akryum for further information and see if it's the right fix :)

[Akryum]

Closed in #907