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Void

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If you have no type at all, commonly used for functions that do not return anything: 

function log(): void {
    console.log('I return nothing');
}

void types Can only be assigned null or undefined.

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TypeScript core types:
* TypeScript Core Types
* String Literal Types
* Tuple
* Boolean
* Intersection Types
* Void
* Any
* Enum
* Array
* Types in function arguments and return value. Number
* Types in function arguments and return value. String
* String
* Number
* const Enum
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