TS17009

error TS17009: ‘super’ must be called before accessing ‘this’ in the constructor of a derived class.

Broken Code ❌

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abstract class Animal {
  abstract name: string;
}

class Dog extends Animal {
  public name;

  constructor(name: string) {
    this.name = name;
    super();
  }
}

Fixed Code ✔️

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abstract class Animal {
  abstract name: string;
}

class Dog extends Animal {
  public name;

  constructor(name: string) {
    super();
    this.name = name;
  }
}