Object

Static methods for working with objects and interfaces.

Object.keys(obj)

Returns an array of the object's own property names.

interface User {
  name: string;
  age: number;
}

const user: User = { name: "Alice", age: 30 };
const keys = Object.keys(user);
// ["name", "age"]

Object.values(obj)

Returns an array of the object's own property values as strings.

const values = Object.values(user);
// ["Alice", "30"]

Object.entries(obj)

Returns an array of alternating key/value strings.

const entries = Object.entries(user);
// ["name", "Alice", "age", "30"]

typeof

Check the runtime type of a value.

typeof "hello"    // "string"
typeof 42         // "number"
typeof true       // "boolean"
typeof user       // "object"