How To Enumerate Es6 Class Methods Duplicate

Have you ever found yourself in a situation where you need to enumerate the methods of an ES6 class but want to avoid duplicate entries? This common scenario can be easily tackled with a few simple techniques. In this article, we will guide you through the process of enumerating ES6 class methods while ensuring each method is listed only once.

When working with ES6 classes, it's important to understand that class methods are typically defined within the class body using the new concise method syntax. These methods become properties on the class's prototype object, which allows them to be shared among all instances of the class.

To enumerate the methods of an ES6 class without duplicates, we can leverage the `Object.getOwnPropertyNames()` method along with a set to store unique method names. Let's dive into the implementation details:

Javascript

class ExampleClass {
  method1() {
    // Method implementation
  }

  method2() {
    // Method implementation
  }
}

const uniqueMethods = new Set();

Object.getOwnPropertyNames(ExampleClass.prototype).forEach(methodName =&gt; {
  if (typeof(ExampleClass.prototype[methodName]) === 'function') {
    uniqueMethods.add(methodName);
  }
});

const uniqueMethodList = Array.from(uniqueMethods);
console.log(uniqueMethodList);

In the code snippet above, we create a new ES6 class `ExampleClass` with two methods: `method1` and `method2`. We then define a set `uniqueMethods` to store unique method names and iterate over all property names of the class prototype using `Object.getOwnPropertyNames()`.

For each property name, we check if the corresponding value is a function (i.e., a method) by using `typeof`, and if so, we add the method name to the `uniqueMethods` set. Finally, we convert the set to an array using `Array.from()` to obtain a list of unique method names and log it to the console.

By following this approach, you can easily enumerate the methods of an ES6 class while filtering out duplicate entries. This method is versatile and can be applied to any ES6 class you are working with, providing a clean and efficient solution to the problem.

In conclusion, enumerating ES6 class methods without duplicates is a straightforward task with the right approach. By utilizing the combination of `Object.getOwnPropertyNames()` and a set to filter out duplicates, you can efficiently extract a list of unique method names from any ES6 class. Try out this technique in your own projects to streamline your code and improve readability.

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