Environment key "jest/globals" is unknown

I couldn’t use { "jest/globals": true } as recommended in the readme, so I’m using the built in Jest env with { "jest": true }.

Config

{
  "env": { 
    "jest/globals": true
  },
  "extends": [
    "plugin:jest/recommended"
  ]
}

Dependencies

purespec@0.0.0 /Users/nick/Repos/purespec
├── eslint@4.14.0
├── eslint-plugin-jest@21.5.0
└── jest@22.0.4

[pauloborges]

I believe ESLint processes the configuration file as it reads it, so try declaring the env block after the extends block.

[yogeshdotnet]

I have also faced this issue and solved by following steps:

Update Package.json(Remove “react-app/jest” from extends array

“eslintConfig”: { “extends”: [ “react-app” ] }, Run npm install and check again It works It works fine for me