when i try to add tests to my webapp with `useKarm...

# javascript

[Nikky]

when i try to add tests to my webapp with useKarma{ usePhantomJs() }
i see this error:

SyntaxError: Unexpected token 'const'
c:/Users/nikky/dev/formation/web-app/build/js/node_modules/@fluent/bundle/esm/builtins.js:15:1 <- C:/Users/nikky/dev/formation/web-app/build/js/packages/formation-web-app-test/adapter-browser.js:115test/adapter-browser.js:115

java.lang.IllegalStateException: command 'C:\Users\nikky\.gradle\nodejs\node-v12.16.1-win-x64\node.exe' exited with errors (exit code: 1)

but the same code and dependencies work when i just put them in the main function

does karma need to be configured to use the same version of something ?