// follow Playground link to see behavior

export interface Foo {
  /** An annotation for first property */
  firstProperty: boolean
  /** An annotation for second property */
  secondProperty: number
}

export interface Bar {
  /** An annotation for the third property */
  thirdProperty: string
}

const foo: Foo = {
  // roll over to get annotation
  firstProperty: false,
  // roll over to get annotation
  secondProperty: 42
}

export type FooAndOrBar = (Foo & Bar) | Foo | Bar

const fooAndBar: FooAndOrBar = {
  // rollover annotations don't work here
  firstProperty: true,
  secondProperty: 2,
  thirdProperty: "hello"
}