[Tracking]: Remove Deprecations and Drop Tooling Support

[valentinpalkovic]

This milestone focuses on removing deprecated features and outdated tooling support to streamline Storybook 9. The work includes the deprecations and tooling removals listed in the linked issues. It also involves ensuring clear migration paths for affected users and improving related documentation.

Items:

1. Remove Deprecated Features

• Remove all deprecations listed in issue [Storybook 9]: Remove deprecations #30350
  • Remove each deprecated feature and its related code
  • Ensure all removed deprecations are covered in migration notes

2. Drop Outdated Tooling Support

• Remove outdated tooling support listed in issue [Storybook 9]: Drop support for tooling/integrations/frameworks #30353
  • Remove each outdated tool and related configurations (update package.json)
  • Remove logic
  • Verify no unintended breaking changes are introduced due to these removals
  • Update

    storybook/code/lib/cli-storybook/src/autoblock/block-dependencies-versions.ts

    Lines 7 to 15 in 513bb66

    	const minimalVersionsMap = {
    	'@angular/core': '15.0.0',
    	'react-scripts': '5.0.0',
    	next: '13.5.0',
    	preact: '10.0.0',
    	svelte: '4.0.0',
    	vue: '3.0.0',
    	vite: '4.0.0',
    	};

  • Update documentation and migration notes accordingly
  • Sub: Remove Svelte < 5 support

3. Remove @storybook/addon-storysource

• Enable new codePanel per default
  • The newly introduced codePanel is currently hidden behind a parameter - Remove the parameter and think of a better statically analyzable way to know whether the panel should be shown or not
• Remove @storybook/addon-storysource from the monorepo
  • Remove the package and its related dependencies
  • Write an automigration to detect its usage and to uninstall it for the user
  • Update migration notes to provide alternatives or guidance for users
• Close Storysource GitHub issues with default message how to upgrade

4. Remove experimental status from @storybook/experimental-nextjs-vite

• Rename @storybook/experimental-nextjs-vite
  • Rewrite all references
  • Check vite-plugin-nextjs-storybook for all references and rewrite
  • Write automigrations
• Documentation
  • Adjust documentation
  • Write Migration guide

5. Write auto blocker to block people from upgrading from <8 to 9

• Write auto blocker (AutoBlocker: Add major version upgrade blocker #30714)
• Test it in different environments
• Update documentation: Document the fact that they might be better off initializing a fresh project and re-adding their stories & configuration (@jonniebigodes)
  recommended above

6. Remove obsolete automigrations

• Remove automigrations which are not relevant for an upgrade from 8 to 9

6. Improve Documentation on Ecosystem Releases

• Create documentation for Tracking: Ecosystem Releases (issue [Tracking]: Ecosystem Releases #23279)
  • Write new documentation outlining the process for tracking ecosystem releases (@jonniebigodes)
  • Ensure the docs clarify how ecosystem releases (frameworks, tools, etc.) impact Storybook users (@jonniebigodes)
  • Either remove the GitHub tracking issue or reference the new docs page instead