Type Checking and Interface with a Discriminator
Explore how to implement type checking using discriminators within TypeScript interfaces. Understand how shared properties help narrow down union types to specific interfaces, improving code reliability and type safety. Learn the limitations of discriminators with inheritance scenarios and when to apply this pattern effectively.
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Checking type with literal
In the literal type lesson, you saw that a literal type can be used to differentiate different types. It means that you may have a function that takes a union of several types that you would like to figure out which type is being passed, to accomplish something specific to that type. You also saw the pattern of branding in a type alias that is using a discriminator in one of its patterns. As a reminder, here is an example with ...