Question

147

Get TypeScript enum name from instance

rated 0 times [ 153] [ 6] / answers: 1 / hits: 16835 / 6 Years ago, tue, january 16, 2018, 12:00:00

I have the following TypeScript enum:

enum Country {

    BR = Brazil,

    NO = Norway

}

Then imagine I have a method that takes a Country as an argument, like so:

someFunc = (country: Country): void => {

    console.log(country) //Will print Brazil if country = Country.BR

    console.log(Country[country]) //Same as above

    console.log(???) //I want to print BR if country = Country.BR

}

How do I solve the third console.log statement?

How do I get a hold of the enum key?

Regards

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

adam

Add To Favorites

Follow

Total Points: 363

Total Questions: 102

Total Answers: 104

Location: Burkina Faso

Member since Thu, Dec 15, 2022

1 Year ago

answered 7 Years ago janettejordynm · Accepted Answer

Under the enum constrution you get something like this

Country[BR] = Brazil;

Country[NO] = Norway;

which is a simple object.

By default you can't get the keys of your enum. But you can iterate over the keys manually and try to find that one.

enum Country {

    BR = Brazil,

    NO = Norway

}



console.log(Object.keys(Country).find(key => Country[key] === country))