If it is then initialize it with 0. Semantics of the `:` (colon) function in Bash when used in a pipe? In the following example, the a is 1 and b becomes 3 when we call addNum for the first time. By default null and undefined handling is disabled, and can be enabled by setting strictNullChecks to true. We can also move the props types into a separate interface: In version 3.2 and below, the generic type parameter for defineProps() were limited to a type literal or a reference to a local interface. ), Dealing with Optional Parameters in Typescript. In

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