Record Type

Use Record<> for object typing

// key of string and value of string
const encode_definitions: Record<string, string> = {
  "black": "0",
  "brown": "1",
  "red": "2",
  "orange": "3",
  "yellow": "4",
  "green": "5",
  "blue": "6",
  "violet": "7",
  "grey": "8",
  "white": "9"
};

// key of string and any value (more common)
const some_definitions: Record<string, any> = {
  "key_one": {
    "some value"
  },
  "key_two": 2,
  "key_three": "some other value",
};

// using another type as keys options
type Choices = 'cat' | 'dog' | 'lizard';

type Pets = Record<Choices, number>;

const petPrices: Pets = {
  cat: 4.41,
  dog: 8.63,
  lizard: 13.29,
};