Alex's Slip-box

These are my org-mode notes in sort of Zettelkasten style

Index signature

See also Constants, interfaces and types

# Basic usage

The name of the next (eg, id, key) is arbitrary.

interface Foo {
  [id: number]: string;
  [key: string]: string;
}

# Using a set of literals

type FooKey = 'a' | 'b' | 'c'

type Foo {
  [key in FooKey]: string
}