https://stackoverflow.com/questions/52101977/why-typescript-lets-me-add-a-string-and-a-number-can-i-prevent-it https://stackoverflow.com/questions/52101977/why-

https://stackoverflow.com/questions/52101977/why-typescript-lets-me-add-a-string-and-a-number-can-i-prevent-it https://stackoverflow.com/questions/52101977/why-typescript-...