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sdjkhfbsduifbuisdbuisd.ts

class Parent {
  private readonly _child: Child;

  constructor() {
    // Make a DataDog counter and wrap the child's functions
    this._child = new Child();

    const dataDogCounter = new DataDogCounter();
  }

  public doLotsOfStuff() {
    // Calls multiple functions of Child.
    
    // Send doSomeStuff's messages here. This is the parent class. It knows what details to include.
    dataDogCounter.sendMessage({/* tags for this situation, etc */});
    this._child.doSomeStuff();

    // Send doSomeOtherStuff's messages here. This is the parent class. It knows what details to include.
    dataDogCounter.sendMessage({/* tags for this situation, etc */});
    this._child.doSomeOtherStuff();

    // Note, no need to inject logic for message sending anymore. Parent class (or function, whatever) does the message
    // sending. If multiple counts need to be maintained (like for counting invokations of more than function), multiple
    // instances of DataDogCounter could be created as members of Parent class.
  }
}

class Child {
  public doSomeStuff() { }

  public doSomeOtherStuff() { }
}