Vue version in template

Describe the bug While writing a story, I noticed that Storybook’s template string doesn’t play nicely with Vue’s scoped slot syntax. This indicates to me that the Vue version that’s used to render the template string is < 2.6.

To Reproduce Steps to reproduce the behavior:

1. Create a .stories.js file that renders a Vue component as follows:

export default {
  title: 'MyButton'
};

export withText = () => ({
  template: '<v-button><v-icon #icon /></v-button>'
});

1. Note how '<v-button><v-icon #icon /></v-button>' does not work as expected, while '<v-button><v-icon slot="icon" /></v-button>' does.

Expected behavior I expected Storybook to render this template with the Vue version that’s installed in node_modules. Which in my case is 2.6.11 (according to yarn list).

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Code snippets If applicable, add code samples to help explain your problem.

System:

Environment Info:

  System:
    OS: macOS 10.15.2
    CPU: (12) x64 Intel(R) Core(TM) i7-8700B CPU @ 3.20GHz
  Binaries:
    Node: 12.13.0 - ~/n/bin/node
    Yarn: 1.21.1 - ~/n/bin/yarn
    npm: 6.13.6 - ~/n/bin/npm
  Browsers:
    Chrome: 79.0.3945.117
    Firefox: 70.0.1
    Safari: 13.0.4
  npmPackages:
    @storybook/addon-actions: ^5.3.3 => 5.3.6 
    @storybook/addon-centered: ^5.3.6 => 5.3.6 
    @storybook/addon-knobs: ^5.3.6 => 5.3.6 
    @storybook/addon-links: ^5.3.3 => 5.3.6 
    @storybook/addon-notes: ^5.3.6 => 5.3.6 
    @storybook/addons: ^5.3.3 => 5.3.6 
    @storybook/vue: ^5.3.3 => 5.3.6 

Additional context What is this template string rendered with? How can I upgrade the Vue version in use here? The slot="" syntax will be deprecated in Vue 3, so I’d like to keep my stories / components as “future proof” as possible.

[Aaron-Pool]

@rijkvanzanten Any public code that I can easily pull down and debug?

[stale[bot]]

Hey there, it’s me again! I am going close this issue to help our maintainers focus on the current development roadmap instead. If the issue mentioned is still a concern, please open a new ticket and mention this old one. Cheers and thanks for using Storybook!