[Bug]: Attributes that are mapped to boolean properties are shown with quotes inside the "Show code" section.

[peschee]

Describe the bug

IS

<button type="button" primary="">Button</button>

SHOULD

<button type="button" primary>Button</button>

To Reproduce

https://stackblitz.com/edit/github-tk7nc8

System

Storybook Environment Info:

  System:
    OS: Linux 5.0 undefined
    CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 18.18.0 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 10.2.3 - /usr/local/bin/npm <----- active
    pnpm: 8.15.3 - /usr/local/bin/pnpm
  npmPackages:
    @storybook/addon-essentials: ^8.0.0-beta.5 => 8.0.0-beta.6 
    @storybook/addon-links: ^8.0.0-beta.5 => 8.0.0-beta.6 
    @storybook/blocks: ^8.0.0-beta.5 => 8.0.0-beta.6 
    @storybook/test: ^8.0.0-beta.5 => 8.0.0-beta.6 
    @storybook/web-components: ^8.0.0-beta.5 => 8.0.0-beta.6 
    @storybook/web-components-vite: ^8.0.0-beta.5 => 8.0.0-beta.6 
    storybook: ^8.0.0-beta.5 => 8.0.0-beta.6

Additional context

Using the latest storybook.new Lit + TS template

[arp55]

This is showing as expected now.

[peschee]

@arp55 What do you mean with "now"? Since what version? I can test in my repro.

[arp55]

I checked in the latest. Unable to reproduce.

[peschee]

@arp55 Doesn't work in my repro when updating to 8.0.4 unfortunately…

Component is using Lit and defines the primary attribute inside the html tagged template literal as:

?primary=${ifDefined(primary)}

the show code section still shows

<button type="button" primary=""…

[ajeetchaulagain]

It's showing with quotes as well for me with latest (8.0.5)

[sossost]

hi @vanessayuenn. I am sossost, a new contributor. Can I fix this??

[ChelseaChilders]

I can confirm this is happening to me as well. Looking for a fix

[vanessayuenn]

@sossost Please go ahead! Be sure to check the contribution guide and hop onto the Storybook Discord if you need any help getting started. Looking forward to your contribution! ✨

[psychobolt]

I have the same issue on v8.1.11

[emersonbottero]

Also having the same issue