TS2335

error TS2335: ‘super’ can only be referenced in a derived class.

Broken Code ❌

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abstract class Animal {
  abstract makeNoise(): string;
}

class Cat {
  constructor() {
    super();
  }

  makeNoise(): string {
    return 'Meow!';
  }
}

Fixed Code ✔️

Your derived class has to “extend” the base class:

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abstract class Animal {
  abstract makeNoise(): string;
}

class Cat extends Animal {
  constructor() {
    super();
  }

  makeNoise(): string {
    return 'Meow!';
  }
}