How to resolve “Cannot use import statement outside a module” in jest

Question

I have a React application (not using Create React App) built using TypeScript, Jest, Webpack, and Babel. When trying to run \"yarn jest\", I get the following error:

Answer 1

Use Babel to transpile those JS Modules and you'll be able to write your tests with es6.

Install Babel/preset-env

npm i -D @babel/preset-env

Create a babel configuration file with the preset

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