node-fetch 3.0.0 and jest gives SyntaxError: Cannot use import statement outside a module

Fetch 3.0 is designed for using esmodules instead of commonjs. Therefore you have to make sure you import it into a module.

For example: to import it to app.js : Add “type”:”module” in your package.json and then import it.

For importing it to other files or app.js even, you can also change the extension from .js to mjs that will tell nodejs to treat as a esmodule.

Otherwise downgrade fetch to use an older version that supports commonjs like 2.something.

npm install node-fetch@2
npm install @types/node-fetch@2