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MartinJohns avatar MartinJohns commented on April 27, 2024

Duplicate of #51773.

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RyanCavanaugh avatar RyanCavanaugh commented on April 27, 2024

Yep; a derived class can "open up" the readonly at which point the narrowing is no longer sound

class Derived extends Handler {
  ev!: Event;
  constructor(ev: Event) {
    super(ev);
  }
}

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swachter avatar swachter commented on April 27, 2024

Would it be sound for private members?

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typescript-bot avatar typescript-bot commented on April 27, 2024

This issue has been marked as "Duplicate" and has seen no recent activity. It has been automatically closed for house-keeping purposes.

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