Cannot assign to read only property 'Symbol(Symbol.toStringTag)' of object '#<process>'

[devnet-uk]

Version

3.5.1

Environment info

  System:
    OS: macOS 10.14.3
    CPU: (8) x64 Intel(R) Core(TM) i7-7920HQ CPU @ 3.10GHz
  Binaries:
    Node: 11.11.0 - /usr/local/bin/node
    Yarn: 1.13.0 - /usr/local/bin/yarn
    npm: 6.7.0 - /usr/local/bin/npm
  Browsers:
    Chrome: 72.0.3626.121
    Firefox: 64.0
    Safari: 12.0.3
  npmPackages:
    @vue/babel-helper-vue-jsx-merge-props:  1.0.0-beta.2
    @vue/babel-plugin-transform-vue-jsx:  1.0.0-beta.2
    @vue/babel-preset-app:  3.5.1
    @vue/babel-preset-jsx:  1.0.0-beta.2
    @vue/babel-sugar-functional-vue:  1.0.0-beta.2
    @vue/babel-sugar-inject-h:  1.0.0-beta.2
    @vue/babel-sugar-v-model:  1.0.0-beta.2
    @vue/babel-sugar-v-on:  1.0.0-beta.2
    @vue/cli-overlay:  3.5.1
    @vue/cli-plugin-babel: ^3.5.0 => 3.5.1
    @vue/cli-plugin-e2e-nightwatch: ^3.5.0 => 3.5.1
    @vue/cli-plugin-eslint: ^3.5.0 => 3.5.1
    @vue/cli-plugin-unit-jest: ^3.5.0 => 3.5.1
    @vue/cli-service: ^3.5.0 => 3.5.1
    @vue/cli-shared-utils:  3.5.1
    @vue/component-compiler-utils:  2.6.0
    @vue/eslint-config-standard: ^4.0.0 => 4.0.0
    @vue/preload-webpack-plugin:  1.1.0
    @vue/test-utils: 1.0.0-beta.29 => 1.0.0-beta.29
    @vue/web-component-wrapper:  1.2.0
    eslint-plugin-vue: ^5.0.0 => 5.2.2
    jest-serializer-vue:  2.0.2
    vue: ^2.6.6 => 2.6.9
    vue-eslint-parser:  5.0.0
    vue-hot-reload-api:  2.3.3
    vue-jest:  3.0.4
    vue-loader:  15.7.0
    vue-router: ^3.0.1 => 3.0.2
    vue-style-loader:  4.1.2
    vue-template-compiler: ^2.5.21 => 2.6.9
    vue-template-es2015-compiler:  1.9.1
    vuex: ^3.0.1 => 3.1.0
  npmGlobalPackages:
    @vue/cli: Not Found

Steps to reproduce

Create a standard Vue Project with Jest as the unit test framework. The sample test will fail with the following message.

Test suite failed to run

TypeError: Cannot assign to read only property 'Symbol(Symbol.toStringTag)' of object '#<process>'

  at exports.default (node_modules/jest-environment-jsdom/node_modules/jest-util/build/create_process_object.js:15:34)

What is expected?

test to pass

What is actually happening?

Test suite failed to run

TypeError: Cannot assign to read only property 'Symbol(Symbol.toStringTag)' of object '#<process>'

  at exports.default (node_modules/jest-environment-jsdom/node_modules/jest-util/build/create_process_object.js:15:34)

---

I believe this is related to the newest version of node (11.11.0) and has been addressed by Facebook as part of Jest 24.5.0 release (jestjs/jest@800f2f8)

Also posted in React Git Issue log: facebook/create-react-app#6591

[miking-the-viking]

+1
I've also just started experiencing this when trying to run jest in both a Vue CLI project and a NestJS Project shortly after upgrading yarn.

[glazey132]

Experiencing the same issue after switching to yarn in my create react app application. Using React instead of Vue

[silentgecko]

We've exactly the same error, and waiting for an update of the dependencies (node/jest is already updated, which will fix this error)

[YoshiYo]

According to the Jest's github, it's due to a recent bug with Node v11.11.

for those facing this issue: this happened after Node v11.11. the quickest fix is to downgrade Node to 11.10.1 in your CI lock file until further investigation

jestjs/jest#8069 (comment)

[mwmcode]

had the same issue, solved when updating node to v11.12.0

[Carduelis]

Has the same issue: it did appear with image: node:latest in gitlab.yml.
Switching to node:10.15.3 has fixed the issue.

[LinusBorg]

since it works with node 11.12, I'll close it.