yarn dev: It runs the server for dev environment.yarn start: It runs the server for prod environment.yarn test: It runs the tests.yarn watch:dev: It runs the server for dev environment with hot reload feature.
Support for ESM syntax in tests is currently enabled by https://jestjs.io/docs/ecmascript-modules.
How to force ESLint rules in VSCode: https://www.digitalocean.com/community/tutorials/linting-and-formatting-with-eslint-in-vs-code#step-4-%E2%80%94-formatting-on-save