What is the best method for using template literals in a return statement?

I have been utilizing a template literal type in the following manner:

type Greetings = `Hey ${string}`

const string = 'Universe'
function greet(string: string): Greetings {
  return 'Hey' + string
} 

(Playground)

However, I encountered an error message:

Type 'string' does not satisfy the type '`Hey ${string}`'.

Is there a solution to rectify this issue?

Answer №1

To resolve this issue, you can simply modify the code by using a template literal that matches the one utilized in HelloSomething.

type HelloSomething = `Hello ${string}`

const str = 'World'
function greet(str: string): HelloSomething {
  return `Hello ${str}`; // no error
  // return `Hecko ${str}`; // error
  // return `Hello${str}`; // error
}

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