Enums and as const

An enum names a set of related constants. A plain union of literals often does the same with less code.

Exampletypescript

as const makes values read only and exact. keyof typeof Colors builds the union "red" | "green" from the object.

Quick check

What does `as const` do to an object?

Converts it to a classMakes its values read-only with exact literal typesDeletes unused keys

Your turn: write the code

Declare enum Color { Red, Green, Blue }. Print Color.Green, then the name for the value 2 (Color[2]).

Finish the quick check (and any code exercise) to complete this lesson, or mark it done yourself.

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