Annotations/IntelliSense gets lost with simple `&` and `|` joins or utilities

🔎 Search Terms

IntelliSense, comments, annotations, symbol annotation, utilities, utility, union, intersection

🕗 Version & Regression Information

• This is the behavior in every version I tried, and I reviewed the FAQ for entries about annotations

⏯ Playground Link

https://www.typescriptlang.org/play?#code/KYDwDg9gTgLgBASwHY2FAZgQwMbDgMQgjgG8AoOOAegCoa4BBJOTJJCGTGBCZ9aOOgRQAzvDBQIYNDACecGlQqDhYgAqTpsWQC44AIyIAbYK2W16TFmw5cefASODZeAEzgSpM+YuVOXSK4aXtp6SACuALb6aGQAvmRkoJCwiChoWLhwAEKYUKTmdIzMrOyc3LyCAjAAFni1wu6eWnIKSpQNUEGa3npiUMgA5vGJAWJVEHqExAC8BZRUVHCSRkZwEABuaHAwxIPA8KW2FUjKQqIwwS26gphGTgA05ksra5vbu3D7hzbl9n7ONxXXpwAAsACYRklwNB4HJpAQiExXAB5KC5fJzAAU0zgADIcnkAJRwAA+iOI5Ixo14434EGRGKmSMCaIxcDm5AWLwgq3e+SOf1pcFcvAA5PAAO7QADWcDqUGAZ1Ulx6oVu92AT0o-iBarkenB2p2NUawPVACI6nyLVDFnBItA8C5ImATCA4KBMK6THAALQBwNB4OBxLwvAAJWAAEdwsJgAwYAAZUxiFFIYAAHgAKg84ABpYCyESekCoQIlmVFiDoODZjlwKuyGt1gB8DbUCGwMszylzygAoiBsEZwq4s02W7mC0WRK2yO28couZQ4ABtfNpGfFgC6foA-Hoo7H465M53uzm8-nW4u4Go8tw7ueuz3p0OR2Os4Xi9fb-PKDiDdZx3MNZARRMU0wNMM1xOZjzjRVINTGB0yzaY8zFc51H1WQxTJOAxV1QJzTkMV5zIMZ4AAK3CGDgGmPRkOg1DYKIBsV3tV5+WsMo7GFO4RGIUUkAlOBpSgOUFSVShsNVEIDQ1Jx4iAA

💻 Code

// 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"
}

🙁 Actual behavior

IntelliSense doesn't work on properties after running through & (intersections) with | (unions) or more complex type manipulation.

🙂 Expected behavior

I expected the annotation to "come along" with the symbol and appear in IntelliSense.

Additional information about the issue

No response

Inizia con la riproduzione collegata di TypeScript Playground e confronta l’IntelliSense delle proprietà per Foo, Bar e FooAndOrBar. Traccia come vengono preservate le annotazioni attraverso i tipi di intersezione e unione, quindi verifica che l’IntelliSense di rollover mostri le annotazioni previste per tutte e tre le proprietà.