Jest coverage reports cause an error with v4.0.0-beta.2

[dschreij]

I just decided to give the latest beta a spin, and it worked well for running the unit tests, but when also trying to add a coverage report, I got:

resources/components/NotificationBox/NotificationBox.spec.js
  ● Test suite failed to run

    /home/daniel/Repos/omm/resources/components/NotificationBox/NotificationBox.vue: don't know how to turn this value into a node

      at valueToNode (node_modules/@babel/core/node_modules/@babel/types/lib/converters/valueToNode.js:87:9)
      at Object.valueToNode (node_modules/@babel/core/node_modules/@babel/types/lib/converters/valueToNode.js:81:58)
      at Object.exit (node_modules/istanbul-lib-instrument/dist/visitor.js:638:30)
      at PluginPass.exit (node_modules/babel-plugin-istanbul/lib/index.js:158:38)
      at newFn (node_modules/@babel/core/node_modules/@babel/traverse/lib/visitors.js:179:21)
      at NodePath._call (node_modules/@babel/core/node_modules/@babel/traverse/lib/path/context.js:55:20)
      at NodePath.call (node_modules/@babel/core/node_modules/@babel/traverse/lib/path/context.js:42:17)
      at NodePath.visit (node_modules/@babel/core/node_modules/@babel/traverse/lib/path/context.js:99:8)
      at TraversalContext.visitQueue (node_modules/@babel/core/node_modules/@babel/traverse/lib/context.js:112:16)
      at TraversalContext.visitSingle (node_modules/@babel/core/node_modules/@babel/traverse/lib/context.js:84:19)
      at TraversalContext.visit (node_modules/@babel/core/node_modules/@babel/traverse/lib/context.js:140:19)
      at Function.traverse.node (node_modules/@babel/core/node_modules/@babel/traverse/lib/index.js:84:17)
      at traverse (node_modules/@babel/core/node_modules/@babel/traverse/lib/index.js:66:12)
      at transformFile (node_modules/@babel/core/lib/transformation/index.js:107:29)
          at transformFile.next (<anonymous>)
      at run (node_modules/@babel/core/lib/transformation/index.js:35:12)

Downgrading to v3.0.5 fixed the issue and printed out coverage reports again.

I am using:

"babel-jest": "^25.5.1",
"jest": "^25.5.3",
"nuxt": "^2.12.2",

[robere2]

Did you update any other dependencies? Seems like this might be some sort of conflict between at least Jest 25.5.3 and later and 4.0.0-beta.2.
I had no problems with 4.0.0-beta.2 until I made the following changes to my dependencies:

    "jest": "^24.1.0",
    "vue-jest": "^4.0.0-beta.2"

Changed to:

    "babel-core": "^7.0.0-0",
    "identity-obj-proxy": "^3.0.0",
    "jest": "^25.5.4",
    "vue-jest": "^3.0.5" // Downgraded to fix the issue

[laiso]

I have the same problem, and when I fix JEST to V24, the coverage report output is successful.

"jest": "~> 24.9.0",
"vue-jest": "beta"

[dschreij]

Yes I updated jest from v24 to v25 I think.

[Petercopter]

I'm using

babel-jest@25.4.0
jest@25.4.0
nuxt@2.12.2
vue-jest@4.0.0-beta.2

Trying to upgrade to babel-jest@26.0.1 and jest@26.0.1 results in

don't know how to turn this value into a node

[negibouze]

@Petercopter
I met a same issue.
I want to downgrade Jest to v25.4.0, but Jest has the following dependencies.

"dependencies": {
    "@jest/core": "^25.4.0",
    "import-local": "^3.0.2",
    "jest-cli": "^25.4.0"
  },

So I can't downgrade @jest/core to v25.4.0.

[bob-lee]

same issue here. going back to jest@24.9.0 and vue-jest@4.0.0-beta.3 for now.

[aldarund]

vue-jest@4.0.0-beta.3 dont work with jest 25 & 26 too, only 3.0.5