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{ name: 'Dog', legs: 4 } You can either use the utility functions or create custom mapped types to reuse the existing types to create new types. These custom mapped types improve the readability of the code and help developers to make code maintainable. ...
Suppose we want some objects to have some and not all properties, then the best option would be to mark these properties as optional by just adding a question mark as a postfix to the property name.For example,suppose we don’t always need the age property or suppose it can be undefined...
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0 - This is a modal window. No compatible source was found for this media. In the above example, we define the function greet with two parameters − name and age. The second parameter, age is initialized with default value. The parameter age works here as optional parameter. ...