Default Parameters

Default values can be applied both to the entire destructuring parameter and to individual destructured properties. This creates a powerful combination for handling complex function parameters. For example: `function processUser({ name = 'Anonymous', role = 'User' } = {}) { ... }`. In this function, if no object is passed at all, the empty object default `= {}` ensures destructuring won't fail. Additionally, if the passed object is missing the `name` or `role` properties, their respective default values ('Anonymous' and 'User') will be used. This two-level defaulting provides great flexibility and robustness. You can destructure arrays with defaults similarly: `function getCoordinates([x = 0, y = 0] = []) { ... }`. This pattern is commonly used in modern JavaScript libraries and frameworks to create functions with numerous optional parameters while maintaining a clean interface and providing sensible defaults.