Learn how to make one of two properties required, but not both, using TypeScript types, interfaces, and a union type.

Learn how to get the key of an object by its value with JavaScript and TypeScript.

Should we use TypeScript enums? Looking to replace your TypeScript enums? Consider union types or POJOs with as const annotations.

Learn how you can get the keys of a numeric TypeScript Enum.

Find out how you can iterate or loop over a TypeScript Enum of string values.

Find out how to destructure objects with types or interfaces in TypeScript.