Search for the enumeration type of the given string does not have an assigned index signature

I am working with a string enum where each value is associated with a display name as shown below:

enum MyEnum {
  key1 = 'one',
  key2 = 'two',
  key3 = 'three',
}

const myKey: MyEnum = 'two' as MyEnum; // The value for myKey is only known at runtime

const lookupResult = {
  [MyEnum.key1]: 'display name for key1',
  [MyEnum.key2]: 'display name for key2',
}[myKey];

However, I encountered an error when using the lookup object:

TS7017: Element implicitly has an 'any' type because type '{ [MyEnum.key1]: string; [MyEnum.key2]: string; }' has no index signature.

How can I successfully match myKey to its display name without triggering this error?

Do you think it would be better not to use an enum in this scenario? I require both the enum values and their corresponding display names for different contexts.

typescript

Answer №1

Utilize the enum key for easy referencing.

enum MyEnum {
  key1 = 'one',
  key2 = 'two',
  key3 = 'three',
}

const lookupResult = {
  [MyEnum.key1]: 'display name for key1',
  [MyEnum.key2]: 'display name for key2',
}[MyEnum.key2];

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