Built-in Mapped Types
This lesson walks through some of the built-in mapped types and explains them in detail.
We'll cover the following...
We'll cover the following...
Partial
Partial<T> returns a type that has the same properties as T but all of them are optional. This is most useful when the strictNullChecks flag is enabled. Partial works on a single level, meaning it doesn’t affect nested objects. A good use case for Partial is when you need to type a function that lets you override default values of properties of some object.
As you can see, Partial ...