Tips for enabling a string as a class key

Here is a function I am working with:

export const sortAlphabetically = <T>(array: T[], property: string) => 
    array.sort((a: T, b: T) => 
    a[property].localeCompare(b[property]));

The property should be a valid key in T (as a string), and no other values should be accepted. I attempted to use property: [key in t], but it did not work as expected. Is there a different approach I can take to achieve this?

Answer №1

Using the keyof operator will solve the issue

Check out the documentation for more information

export const sortAlphabetically = <
  T extends Record<string, string>
>(array: T[], property: keyof T) =>
  array.sort((a: T, b: T) => a[property].localeCompare(b[property]));

Make sure to specify that the value of the property is a string in TypeScript by using

T extends Record<string, string>

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