title: What are enum Flags in TypeScript?
body: <p>I'm learning TypeScript using <a href="https://basarat.gitbook.io/typescript/type-system/enums" rel="noreferrer">this ebook</a> as a reference. I've checked the <a href="https://www.typescriptlang.org/docs/handbook/enums.html" rel="noreferrer">TypeScript Official Documentation</a> but I don't find information about enum flags.</p>