Check if an object's properties are null in Typescript

Question

In Typescript I am checking if an object\'s properties are null as follows:

var addressCountryName = response.address == null 
   ? null 
   : response.addre         


        

Answer 1

As others have mentioned the null coalescing operator is still in a proposal stage so you can't access properties using ?. Your only options currently are to do deep nesting with if statements or ternarys or to consider something like the get method from lodash which would let you do:

let addressCountryName = get(response, 'address.country.name');

Which will either return the value of name or undefined if any part of the object path was null or undefined.

Here's a CodeSandbox with an example of using lodash: https://codesandbox.io/s/mm46wkr058