When testing Typescript files, ESLint might complain about some Jest/Jasmine functions (e.g.
'describe' is not defined.eslint(no-undef)
That happens even after installing the
ESLint needs you to specify which environments your script will run:
// .eslintrc.yml env: - jasmine: true - jest: true
Now, Jasmine and Jest types will be set as global variables and your linting will work again. :)