What are default values in destructuring?

Can you explain what default values in destructuring are?

Sure! Default values in destructuring allow you to assign a default value to a variable if the value unpacked from an object or array is undefined.

Can you give me an example of how that works?

Of course! For instance, if you have const { a = 10 } = {};, a will be 10 because the object doesn't have a property a.

What happens if the property exists but is set to undefined?

If the property exists but is set to undefined, the default value will not be used. For example, const { a = 10 } = { a: undefined }; will make a equal to undefined.

Are there any limitations to using default values in destructuring?

Yes, one limitation is that default values only apply when the value is undefined, not when it's null or any other falsy value.