Typescript: how to define a object with many unknown keys-CodePudding

I'm building an application that access an API that returns an object with many unknown keys, each key represents an id of a user.

Example:

const response = {
  "random id1": {name: "user1"},
  "random id2": {name: "user2"},
  ...
  "random id100": {name: "user100"}
}

I know that if I have just one unknown key I can define using something like:

type MyDefinition = {
  [key: string]: Metadata
}

But how can I define an object with so many different keys?

CodePudding user response：

You can use a type defined with a template string like this:

const response: { [key: `random id${number}`]: { name: string }} = {
  "random id1": {name: "user1"},
  "random id2": {name: "user2"},
  "random id100": {name: "user100"}
}

You can see it in action on this

Here and here you can find an explanation of number range.

You have probable noticed that there is a limit you can't cross.

With above approach it will not allow random id1e4.