Connections: Software Engineering Typescript
Defining Objects
When defining the types of key value pairs in Typescript, there are two common ways to go about it.
The most common way is to just use a combined with the in
operator to define the keys. Notably, this construct is only available
with types and not interfaces
type CatName = "fuzzy" | "kitty" | "furball"
type CatAges = {
[key in CatName]: number;
}This can also be accomplished by using the `Record` utility type, and I think more clearly illustrates the intent
type CatName = "garfield" | "eek"
type CatAges = Record<CatName, number>;