cra-template-kea-typescript/template/src/App/DemoForm/utils.ts

The Kea TypeScript template for Create React App.

export function validateEmail(email: string): boolean {
  const re = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
  return re.test(String(email).toLowerCase())
}