[Bug]: Missing excludeDecorator for @storybook/angular for Docs

[pedroleitaogls]

Describe the bug

Setting component docs with a componentWrapperDecorator shows the wrapper code in the "Show Code". To exclude the wrapper code you can set a parameter on the component as described below.
According to examples, and for React (https://github.com/storybookjs/storybook/blob/v7.6.3/code/renderers/react/src/docs/jsxDecorator.tsx) you can just set the following parameter:

{
  docs: {
      source: {
          excludeDecorators: true
      }
  }
}

However, this does not work when using @storybook/angular. I found out on your code that you do not take into account the excludeDecorators flag.(https://github.com/storybookjs/storybook/blob/v7.6.3/code/frameworks/angular/src/client/docs/sourceDecorator.ts)

A possible solution:
File: https://github.com/storybookjs/storybook/blob/v7.6.3/code/frameworks/angular/src/client/docs/sourceDecorator.ts
Change from:
if (component && !userDefinedTemplate) {
To:
if (component && !userDefinedTemplate || component && context?.parameters.docs?.source?.excludeDecorators)

To Reproduce

Use @storybook/angular.
Have a component with docs.
Add the following Decorator:
componentWrapperDecorator((story) =>

${story}

),
Add the following parameters:
parameters: { docs: { source: { excludeDecorators: true, } } },

Click on the "Show Code" and you will see that the <div style="margin: 5em">...YourComponent</div> shows instead of just YourComponent.

System

No response

Additional context

No response

[valentinpalkovic]

Hi @pedroleitaogls

Thank you for opening this issue!

Would you like to create a PR to fix this?

[pedroleitaogls]

Hi @valentinpalkovic , thanks for the fast reply. I have created the PR #25212. I'm having some trouble setting up my local project to test it though.
I'm getting some errors while running the project with yarn task --task dev start-from auto --template angular-cli/default-ts. Maybe I didn't setup the project correctly or missing some task.

[pedroleitaogls]

Hi @valentinpalkovic, sorry for the late response, the issue is very similar to #12022. The property on parameters.docs.source.excludeDecorators https://storybook.js.org/docs/api/doc-block-source#excludedecorators does not work if you are using Angular Framework.