Version

3.1.5

Reproduction link

https://github.com/Colt-Builders-Corp/estimating-tool/blob/development/package.json

Steps to reproduce

{
  "version": "0.1.0",
  "dependencies": {   
     "vue": "^2.6.12",  
  },
  "devDependencies": {
     "@vue/compiler-sfc": "^3.0.8",
  },
}

Node v14.15.3 npm install

What is expected?

Successful install of compiler-sfc

What is actually happening?

# npm resolution error report

2021-07-20T17:51:38.770Z

While resolving: estimating-tool@0.1.0
Found: vue@2.6.14
node_modules/vue
  vue@"^2.6.12" from the root project

Could not resolve dependency:
peer vue@"3.1.5" from @vue/compiler-sfc@3.1.5
node_modules/@vue/compiler-sfc
  @vue/compiler-sfc@"*" from the root project

Fix the upstream dependency conflict, or retry
this command with --force, or --legacy-peer-deps
to accept an incorrect (and potentially broken) dependency resolution.

Raw JSON explanation object:

{
  "code": "ERESOLVE",
  "current": {
    "name": "vue",
    "version": "2.6.14",
    "whileInstalling": {
      "name": "estimating-tool",
      "version": "0.1.0",
      "path": "/Users/matthewliechty/Desktop/projects/estimating-tool"
    },
    "location": "node_modules/vue",
    "dependents": [
      {
        "type": "prod",
        "name": "vue",
        "spec": "^2.6.12",
        "from": {
          "location": "/Users/matthewliechty/Desktop/projects/estimating-tool"
        }
      }
    ]
  },
  "edge": {
    "type": "peer",
    "name": "vue",
    "spec": "3.1.5",
    "error": "INVALID",
    "from": {
      "name": "@vue/compiler-sfc",
      "version": "3.1.5",
      "whileInstalling": {
        "name": "estimating-tool",
        "version": "0.1.0",
        "path": "/Users/matthewliechty/Desktop/projects/estimating-tool"
      },
      "location": "node_modules/@vue/compiler-sfc",
      "dependents": [
        {
          "type": "prod",
          "name": "@vue/compiler-sfc",
          "spec": "*",
          "from": {
            "location": "/Users/matthewliechty/Desktop/projects/estimating-tool"
          }
        }
      ]
    }
  },
  "peerConflict": null,
  "strictPeerDeps": false,
  "force": false
}

Since this morning, @vue/compiler-sfc 3^ doesn't work with Vue 2. @vue/compile-sfc is being loaded because we use @vue/cli-plugin-unit-jest, but removing and just including @vue/compile-sfc alone reproduces the error.