Error-free property chaining with ES2020 optional chaining operator

Accessing deeply nested properties in JavaScript can often lead to errors if any part of the property chain is null or undefined, traditionally requiring developers to implement cumbersome checks. The optional chaining operator, introduced as part of the ES2020 proposal and supported by modern browsers, simplifies this process by allowing properties to be accessed safely using the `?.` syntax, which returns undefined instead of throwing an error if a property doesn't exist. This operator can be used for method calls and dynamic property access, enhancing code readability and reliability by avoiding the need for verbose conditional checks. Additionally, it can be combined with the nullish coalescing operator (??) to provide default values when properties are not found. Despite its benefits, the optional chaining operator cannot be used on the left-hand side of an assignment and should be applied judiciously to avoid unnecessary short-circuiting of expressions.