fix: add undeclared peer dependency webpack and @vue/compiler-sfc

[merceyz]

What's the problem this PR addresses?

vue-loader@16 depends on webpack and @vue/compiler-sfc but doesn't declare it

Fixes #1844

How did you fix it?

Added webpack and @vue/compiler-sfc as peer dependencies

[haoqunjiang]

Thanks!

[landerson-gc]

@sodatea This appears to be causing an unmet peer dep error for vue2 projects

npm ERR! peer dep missing: @vue/compiler-sfc@^3.0.8, required by [email protected]

relevant deps:

"vue": "^2.6.12",
"@vue/cli-service": "4.5.12",

[landerson-gc]

fix appears to be adding:

"vue-loader-v16": "npm:[email protected]",

to ones package.json

[Schweinepriester]

having the same issue as @landerson-gc with vue2 and can confirm the fix appears to be working, at least for installing. i went with downgrading "@vue/cli-service": "~4.5.13" to "@vue/cli-service": "~4.4.6" as an alternative fix. i'm hoping this will be fixed properly though.

[haoqunjiang]

Fixed in v16.3.3

[chenyulun]

packages/yarnpkg-extensions/sources/index.ts

[`vue-loader@<=16.3.3`, {
    peerDependencies: {
-    '@vue/compiler-sfc': `^3.0.8`,
+      '@vue/compiler-sfc': `^2.7.0 || ^3.0.8`,
      webpack: `^4.1.0 || ^5.0.0-0`,
    },
    peerDependenciesMeta: {
      '@vue/compiler-sfc': optionalPeerDep,
    },
  }]