After upgrading to vue 3 : “Cannot find module ‘@vue/compiler-sfc/package.json’ “

The commands to get it working are:

yarn add vue@next
yarn add @vue/compiler-sfc -D

Note the -D to add it to the devDependencies rather than the dependencies.

Then to remove the old dependency:

yarn remove vue-template-compiler

Note that vue@next currently points at the latest release of Vue 3 but that will likely change in future.

I posted a longer explanation on the Vue forums:

https://forum.vuejs.org/t/after-upgrading-to-vue-3-cannot-find-module-vue-compiler-sfc-package-json/103424

Update:

For anyone using npm rather than yarn, the same 3 commands should work if you change the first word from yarn to npm.