Define decorator without any runtime pollution

Issue

I want to define a decorator to mark properties for specific ESLint rules to be applied at dev time. After compilation there should be no sign of that decorator any more.

function notExistingAfterTSCompilation() {
  return function (target: any, propertyKey: string, descriptor: PropertyDescriptor) {
    // Returning the original descriptor without making any changes
    return descriptor;
  };
}
 
class ExampleClass {
  @notExistingAfterTSCompilation()
  method() {}
}

should compile to only:

class ExampleClass {
    method() { }
}

It might be smelly to try that at all. Any other suggestions?

Playground

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ChatGpt suggested some jsdoc like comments:

class ExampleClass {
  /**
   * @assertions
   */
  markedProperty: string;

  constructor() {
    this.markedProperty = "Hello";
  }
}

Solution

ChatGpt suggested some jsdoc like comments could solve this problem, this is confirmed by other users in the comments section:

class ExampleClass {
  /**
   * @assertions
   */
  markedProperty: string;

  constructor() {
    this.markedProperty = "Hello";
  }
}

Answered By - Andre Elrico