what dose [index: string] mean in typescript [duplicate]

Question

I'm new to Typescript. I saw the following code in one project on GitHub, What does it mean?

interface info {
  [index: string]: any;
}

Answer 1

It means an Object Literal (An object that is created using curly brackets and can be defined by using type or interface, take a look at this link) that accepts as pairs index: value of type string:any. Eg:

let example: info= {
  index1: "some index",
  index2: 1,
  // ...
};