In a derived class constructor, super initializes the properties of the derived class, calling the constructor of the parent class. This sets up the state for the derived class.

Default parameters and destructuring can be used together, and destructuring takes precedence. Explanation should elaborate on how they work together.

In JavaScript ES6, a mixin is a way to compose classes by adding properties and methods to a class. It allows the reuse of functionalities and promotes code reusability. Unlike inheritance, mixins do not rely on a hierarchical relationship between classes. They enhance the flexibility and maintainability of code.

No, you cannot access instance properties directly from a static method. Static methods are associated with the class itself and do not have access to instance-specific data. Option D is correct.

The correct option is Mixin. In ES6, the Mixin pattern involves composing objects by combining small, reusable components. This allows for better code organization and reusability. Mixins are a way to enhance a class with the methods of another class without the need for inheritance.

The Object.getOwnPropertySymbols() method returns an array of all symbol properties found directly upon the given object, regardless of their enumerability. It allows you to access symbols that are not enumerable in regular object iteration.

The correct option is Properties. When using mixins in ES6, there can be conflicts between the properties of the mixin and the target class. It's important to handle these conflicts appropriately to ensure the correct behavior of the composed object.

Dynamic imports are especially useful for asynchronous loading of modules. Unlike traditional synchronous imports, dynamic imports allow modules to be loaded asynchronously, enabling the application to continue executing code without waiting for the module to be fully loaded. This asynchronous behavior is beneficial for optimizing performance, especially in scenarios where certain modules are only needed under specific conditions. Understanding the advantages of asynchronous module loading is crucial for developing efficient and responsive JavaScript applications.

The reduce method is used to execute a reducer function on each element of the array, resulting in a single output value.

Tree shaking can be leveraged by importing only the necessary components from the third-party library. This way, the bundler can exclude the unused parts during the build process, optimizing the bundle size. The other options are not efficient for tree shaking purposes.

In JavaScript, when you declare a constant variable (const) inside a block (like an if statement or a loop), the scope of that variable is limited to the block. This means it cannot be accessed outside of that block.

Functions that perform HTTP requests are not considered pure because they have side effects. Purity in functions means that they do not cause any observable side effects, and HTTP requests involve external actions that can impact the program's state.