Does Jest support ES6 import/export?

Question

If I use import/export from ES6 then all my Jest tests fail with error:

Unexpected reserved word

I convert my object un

Answer 1

I encountered the same issue.

These are what I did:

yarn add --dev babel-jest @babel/core @babel/preset-env

Make file jest.config.js in rootDir.

module.exports = {
    moduleFileExtensions: ["js", "json", "jsx", "ts", "tsx", "json"],
    transform: {
        '^.+\\.(js|jsx)?$': 'babel-jest'
    },
    testEnvironment: 'node',
    moduleNameMapper: {
        '^@/(.*)$': '/$1'
    },
    testMatch: [
        '/**/*.test.(js|jsx|ts|tsx)', '/(tests/unit/**/*.spec.(js|jsx|ts|tsx)|**/__tests__/*.(js|jsx|ts|tsx))'
    ],
    transformIgnorePatterns: ['/node_modules/']
};

Then make file babal.config.js in rootDir.

Go like this:

module.exports = {
    "presets": ["@babel/preset-env"]
}