Creating a Typescript union array that utilizes a string enum for defining key names

Can we shorten this statement using string enum to restrict keys:

Array<{ [enum.example1]: Example } | { [enum.example2]: Example } | ...>
// or equivalent
({ [enum.example1]: Example } | { [enum.example2]: Example } | ...)[];

We can make it more concise like { [key: string]: Example }, but with key restriction from a string enum:

For instance, these variations do not seem to work:

{ [enum]: Example }[];
// or
{ [key: enum]: Example }[];

Answer №1

If you're looking to work with a specific set of string literals, you can utilize the following syntax:

{ [key in MyEnum]?: Example }[]

For a practical demonstration, check out this stackblitz example.

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