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Specify Exact Values with TypeScript’s Literal Types


A literal type is a type that represents exactly one value, e.g. one specific string or number. You can combine literal types with union types to model a finite set of valid values for a variable. In this lesson, we explore the all kinds of literal types in TypeScript:

  • String literal types
  • Numeric literal types
  • Boolean literal types
  • Enum literal types
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