How can I call class methods dynamically?

Question

I am trying to make an abstract class with method callAction which calls methods of class dynamically.

I have tried to write this but I am getting error.

abstract export class BaseContoller {
    public callAction(method: keyof typeof this, parameters: any[]) {
        this[method](parameters);
    }
}

Error - This expression is not callable. Type 'unknown' has no call signatures.ts(2349)

Is there another way to achive this?

Answer 1

Your class can have value as well as function properties together, so to make sure your property is a function type, you can use typeof x === "function".

That can help to check method's type with the call signature before method execution.

class BaseContoller {
    public callAction(method: keyof typeof this, parameters: any[]) {
      const property = this[method]
      if(typeof property === "function") {
        property(parameters);
      }
    }

    public testFunction() {}
}

Playground