Requires Babel "^7.0.0-0", but was loaded with "6.26.3".

🐛 Bug Report

I get the following message when trying to run tests. None of the solutions in the documentation or other issues work.

    Requires Babel "^7.0.0-0", but was loaded with "6.26.3". If you are sure you have a compatible version of @babel/core, it is likely that something in your build process is loading the wrong version. Inspect the stack trace of this error to look for the first entry that doesn't mention "@babel/core" or "babel-core" to see what is calling Babel.

      at throwVersionError (node_modules/@babel/plugin-proposal-class-properties/node_modules/@babel/helper-plugin-utils/lib/index.js:65:11)
      at Object.assertVersion (node_modules/@babel/plugin-proposal-class-properties/node_modules/@babel/helper-plugin-utils/lib/index.js:13:11)
      at _default (node_modules/@babel/plugin-proposal-class-properties/lib/index.js:81:7)
      at node_modules/@babel/plugin-proposal-class-properties/node_modules/@babel/helper-plugin-utils/lib/index.js:19:12
          at Array.map (<anonymous>)

To Reproduce

Relevant package.json dependencies/config

{
   "devDependencies": {
        "@babel/core": "^7.0.0",
        "@babel/plugin-proposal-class-properties": "^7.0.0",
        "@babel/plugin-proposal-decorators": "^7.0.0",
        "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
        "@babel/plugin-syntax-dynamic-import": "^7.0.0",
        "@babel/preset-env": "^7.0.0",
        "@babel/preset-react": "^7.0.0",
        "@babel/register": "^7.0.0",
        "babel-core": "^7.0.0-bridge.0",
        "babel-jest": "^23.4.2",
        "babel-loader": "^8.0.0",
        "jest": "^23.5.0",
        "jest-environment-jsdom": "^23.4.0",
        "jest-junit": "^3.6.0",
        "jest-transform-graphql": "^2.1.0",
        "regenerator-runtime": "^0.12.1"
    },
   "jest": {
        "coveragePathIgnorePatterns": [
            "node_modules",
            "/*.graphql"
        ],
        "transform": {
            "\\.(gql|graphql)$": "jest-transform-graphql",
            "^.+\\.js$": "babel-jest"
        },
        "setupFiles": [
            "<rootDir>/src/jestSetup.js"
        ],
        "snapshotSerializers": [
            "enzyme-to-json/serializer"
        ],
        "testResultsProcessor": "jest-junit"
    }
}

.babelrc

{
    "presets": ["@babel/preset-react"],
    "plugins": [
        "@babel/plugin-proposal-class-properties",
        "@babel/plugin-proposal-object-rest-spread",
        "@babel/plugin-syntax-dynamic-import",
        ["@babel/plugin-proposal-decorators", { "legacy": true }]
    ],
    "env": {
        "test": {
            "presets": ["@babel/preset-env", "@babel/preset-react"]
        }
    }
}

jestSetup.js

import 'regenerator-runtime';
import Enzyme from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';

Enzyme.configure({ adapter: new Adapter() });

Expected behavior

Jest runs correctly

Link to repl or repo (highly encouraged)

Please provide either a repl.it demo or a minimal repository on GitHub.

Issues without a reproduction link are likely to stall.

Run npx envinfo --preset jest

Throws the follwing error

(node:792) UnhandledPromiseRejectionWarning: TypeError: Cannot read property '1' of null

[tdd]

The rimraf hack is fugly. I’m teaching a React / Redux / Jest class next week and having this postinstall script in my demo app’s package.json makes me want to take a shower.

Please, please Jest team, fix this ASAP!

[jaywcjlove]

This will be a good solution

sudo npm install babel-core@7.0.0-bridge.0 --save-dev

Run your tests again. This worked for me locally