Yarn 2 compatibility: undeclared peerDependencies (non-breaking)

Describe the bug

yarn install (Yarn 2 - Berry) produces this output. These are warnings only, not breaking:

➤ YN0000: ┌ Resolution step
...
➤ YN0002: │ @storybook/aurelia@npm:6.2.9 [61d6c] doesn't provide typescript@* requested by ts-loader@npm:6.2.2
➤ YN0002: │ @storybook/core@npm:6.2.9 [14add] doesn't provide webpack@* requested by @storybook/core-client@npm:6.2.9
➤ YN0002: │ @storybook/core@npm:6.2.9 [61d6c] doesn't provide webpack@* requested by @storybook/core-client@npm:6.2.9
➤ YN0002: │ @storybook/html@npm:6.2.9 [61d6c] doesn't provide webpack@^4.0.0 || ^5.0.0 requested by html-loader@npm:1.3.2
➤ YN0002: │ @storybook/core@npm:6.2.9 [02201] doesn't provide webpack@* requested by @storybook/core-client@npm:6.2.9
➤ YN0002: │ @storybook/marionette@npm:6.2.9 [61d6c] doesn't provide webpack@^4.0.0 || ^5.0.0 requested by html-loader@npm:1.3.2
➤ YN0002: │ @storybook/core@npm:6.2.9 [bf9dd] doesn't provide webpack@* requested by @storybook/core-client@npm:6.2.9
➤ YN0002: │ vue-docgen-api@npm:4.38.1 doesn't provide vue@3.0.11 requested by @vue/compiler-sfc@npm:3.0.11
➤ YN0002: │ @storybook/vue@npm:6.2.9 [61d6c] doesn't provide typescript@* requested by ts-loader@npm:8.2.0
➤ YN0002: │ @storybook/core@npm:6.2.9 [dae8b] doesn't provide webpack@* requested by @storybook/core-client@npm:6.2.9
➤ YN0002: │ @storybook/vue3@npm:6.2.9 [61d6c] doesn't provide typescript@* requested by ts-loader@npm:8.2.0
➤ YN0002: │ @storybook/core@npm:6.2.9 [9187c] doesn't provide webpack@* requested by @storybook/core-client@npm:6.2.9
...

To Reproduce

In a temporary folder…

yarn set version berry
yarn init
yarn add -D @storybook/core @storybook/aurelia @storybook/html @storybook/marionette @storybook/vue @storybook/vue3

Check output for YN0002 warnings, skip those concerning <folder name>@workspace Thanks to @spiltcoffee https://github.com/storybookjs/storybook/issues/11397#issuecomment-830063886 https://github.com/storybookjs/storybook/issues/11397#issuecomment-830076079

Temporary fix

Create .yarnrc.yml next to package.json:

packageExtensions:
  "@storybook/core@*":
    peerDependencies:
      webpack: "*"
  "@storybook/html@*":
    peerDependencies:
      webpack: "^4.0.0 || ^5.0.0"
  "@storybook/marionette@*":
    peerDependencies:
      webpack: "^4.0.0 || ^5.0.0"
  "@storybook/aurelia@*":
    peerDependencies:
      typescript: "*"
  "@storybook/vue@*":
    peerDependencies:
      typescript: "*"
  "@storybook/vue3@*":
    peerDependencies:
      typescript: "*"
  "vue-docgen-api@*":
    peerDependencies:
      vue: "^3.0.11"

These are the peerDependencies that need to be added to the respective projects. vue-docgen-api is not the concern of storybook.

System OS: Windows 8.1 6.3.9600 Binaries: Node: 15.7.0 Yarn: 2.0.0-rc.27 npm: 7.10.0

Additional context

Spin-off of https://github.com/storybookjs/storybook/issues/11397

[spiltcoffee]

~This issue should also address the other complaints from Yarn 2 listed here: https://github.com/storybookjs/storybook/issues/11397#issuecomment-830063886~ issues incorporated

[shilman]

Jeepers creepers!! I just released https://github.com/storybookjs/storybook/releases/tag/v6.4.0-rc.8 containing PR #16551 that references this issue. Upgrade today to the @next NPM tag to try it out!

npx sb upgrade --prerelease

Closing this issue. Please re-open if you think there’s still more to do.