how to use the propertyisenumerable function from the rxjs library in javascript

To use propertyIsEnumerable function from RxJS library in JavaScript, you first need to import it from the library as shown below

index.tsx
import { propertyIsEnumerable } from 'rxjs';
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After importing the function, you can use it on an object to determine whether the specified property is enumerable or not. Here is an example:

index.tsx
const obj = { a: 1, b: 2 };
console.log(propertyIsEnumerable.call(obj, 'a')); // true
console.log(propertyIsEnumerable.call(obj, 'toString')); // false
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In the example above, we create an object obj with two properties a and b, and then use propertyIsEnumerable to check if property a is enumerable, which returns true. We also use propertyIsEnumerable to check if the toString property is enumerable, which returns false.

Note that propertyIsEnumerable is a non-standard method, so it is not reliable to use it in production code. However, it can be useful in some cases for debugging or quick tests.