How to convert a string to enum in TypeScript?

Problem: 

I am new to TypeScript. I have defined the following enum Color in TypeSricpt.

enum Name{
    Joe, Steve
}

But when I try the following code: 

const steve= "Steve";
const name : Name = <Name>steve; 

This gives me an error. So, how can I this value to an enum?

In this article, we are going to learn how to convert a string to enum in TypeScript?

Solution:

The simple solution is you can create a parse function on the enum which accepts one of the keys as arguments. When a new string is added no changes are needed.

enum Car {  Tesla, Lamborghini }

Get the keys 'tesla' | 'lamborghini' (but not 'parse')

type CarKey = keyof Omit<typeof Car, 'parse'>;
namespace Car {
  export function parse(carName: CarKey ) {
    return Car[carName];
  }
}

The key 'tesla' exists as an enum so no warning is given.

Car.parse('tesla');  // == Cars.tesla

Without the 'any' cast you would get a compile-time warning. Because 'xyz' is not one of the keys in the enum.

Car.parse('xyz' as any); // == undefined

 Creates warning: "Argument of type '"bar"' is not assignable to parameter of type '"tesla" | "lamborghini"'.

Car.parse('bar');

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Thank you for reading this article. If you have any more questions you can comment below.