I’ve recently come across the satisfies operator in TypeScript and I’m trying to understand how it differs from regular type assertions. Both seem to provide a way to work with types, but I’m not clear on when to use one over the other.

• How does the satisfies operator enhance type safety compared to type assertions?
• What kind of errors can be caught using satisfies that might be missed with type assertions?
• When should I prefer using satisfies over type assertions and vice versa?

// Satisfies
interface User1 {
    username: string;
    passcode: number;
}

const user1 = {
    username: "joe",
    passcode: 2076,
    email: "[email protected]"
} satisfies User1;

// Type Assertion
interface User2 {
    username: string;
    passcode: number;
}

const user2 = {
    username: "doe",
    passcode: 3000,
    email: "[email protected]"
} as Person;